Programes de Mobilitat Internacionalhttp://hdl.handle.net/2099.1/149122024-03-29T05:11:07Z2024-03-29T05:11:07ZSimulation of heart growth in embryogenesisCouëtoux Pascuito, Tristanhttp://hdl.handle.net/2117/4055092024-03-28T11:40:24Z2024-03-28T11:34:41ZSimulation of heart growth in embryogenesis
Couëtoux Pascuito, Tristan
2024-03-28T11:34:41ZCouëtoux Pascuito, Tristan3D Printing silicones for medical applicationsGenty, Damienhttp://hdl.handle.net/2117/4054642024-03-27T12:10:19Z2024-03-27T12:06:07Z3D Printing silicones for medical applications
Genty, Damien
Hoy, el proceso de fabricación aditiva encuentra su lugar en el campo de la medicina. La impresión 3D ofrece un enfoque innovador que permite crear estructuras complejas y personalizadas. Además, las propiedades únicas de la silicona la hacen especialmente adecuada para diversas aplicaciones médicas. Juntas, estas tecnologías crean nuevas perspectivas que contribuyen a mejorar la calidad de la asistencia sanitaria. El objetivo de esta investigación es proporcionar los parámetros de impresión óptimos para imprimir silicona mediante la tecnología de escritura directa de tinta. Para lograr este proyecto, se proporcionan varias herramientas, incluyendo una impresora 3D que puede imprimir múltiples materiales simultáneamente, así como todas las ayudas necesarias para que funcione correctamente. La búsqueda bibliográfica y el conocimiento de los trabajos de investigación previos del CIM UPC permiten un buen manejo de las utilidades disponibles. Este estudio pone de manifiesto la importancia de ciertos parámetros en la impresión de silicona, como la velocidad de impresión, la formulación de la silicona y la altura de la capa. El ajuste meticuloso de estos parámetros permite determinar su influencia en la calidad final de la pieza. De este modo, se profundiza en el conocimiento de la fabricación aditiva y se obtienen resultados precisos para la investigación. Como resultado, esta tesis propone una metodología para producir piezas de alta precisión con silicona utilizando la tecnología DIW con fines médicos; Nowadays, the process of additive manufacturing is finding its place in the field of medicine. 3D printing offers an innovative approach, enabling the creation of complex, customized structures. In addition, silicone's unique properties make it particularly well-suited to a variety of medical applications. Together, these technologies open up new perspectives, helping to improve the quality of healthcare. The aim of this research is to provide the optimum printing parameters for printing silicone using Direct Ink Writing technology. To achieve this project, several tools are provided, including a 3D printer that can print multiple materials simultaneously, as well as all the aids needed to make it work properly. The bibliography research and the knowledge of the previous research works of the CIM UPC allowed good handling of the available tools. This study highlights the importance of certain parameters in silicone printing, such as printing speed, silicone formulation, and layer height. The meticulous adjustment of these parameters makes it possible to determine their influence on the final quality of the part. This provides an in-depth understanding of additive manufacturing and precise results for future research. As a result, this thesis proposes a methodology for producing high-precision parts with silicone using DIW technology for medical purposes.
2024-03-27T12:06:07ZGenty, DamienHoy, el proceso de fabricación aditiva encuentra su lugar en el campo de la medicina. La impresión 3D ofrece un enfoque innovador que permite crear estructuras complejas y personalizadas. Además, las propiedades únicas de la silicona la hacen especialmente adecuada para diversas aplicaciones médicas. Juntas, estas tecnologías crean nuevas perspectivas que contribuyen a mejorar la calidad de la asistencia sanitaria. El objetivo de esta investigación es proporcionar los parámetros de impresión óptimos para imprimir silicona mediante la tecnología de escritura directa de tinta. Para lograr este proyecto, se proporcionan varias herramientas, incluyendo una impresora 3D que puede imprimir múltiples materiales simultáneamente, así como todas las ayudas necesarias para que funcione correctamente. La búsqueda bibliográfica y el conocimiento de los trabajos de investigación previos del CIM UPC permiten un buen manejo de las utilidades disponibles. Este estudio pone de manifiesto la importancia de ciertos parámetros en la impresión de silicona, como la velocidad de impresión, la formulación de la silicona y la altura de la capa. El ajuste meticuloso de estos parámetros permite determinar su influencia en la calidad final de la pieza. De este modo, se profundiza en el conocimiento de la fabricación aditiva y se obtienen resultados precisos para la investigación. Como resultado, esta tesis propone una metodología para producir piezas de alta precisión con silicona utilizando la tecnología DIW con fines médicos
Nowadays, the process of additive manufacturing is finding its place in the field of medicine. 3D printing offers an innovative approach, enabling the creation of complex, customized structures. In addition, silicone's unique properties make it particularly well-suited to a variety of medical applications. Together, these technologies open up new perspectives, helping to improve the quality of healthcare. The aim of this research is to provide the optimum printing parameters for printing silicone using Direct Ink Writing technology. To achieve this project, several tools are provided, including a 3D printer that can print multiple materials simultaneously, as well as all the aids needed to make it work properly. The bibliography research and the knowledge of the previous research works of the CIM UPC allowed good handling of the available tools. This study highlights the importance of certain parameters in silicone printing, such as printing speed, silicone formulation, and layer height. The meticulous adjustment of these parameters makes it possible to determine their influence on the final quality of the part. This provides an in-depth understanding of additive manufacturing and precise results for future research. As a result, this thesis proposes a methodology for producing high-precision parts with silicone using DIW technology for medical purposes.Navigating the Middle Ground: Foreseeing the Trajectory of Mid-Sized FundsBergquist, Jesperhttp://hdl.handle.net/2117/4053642024-03-26T12:00:22Z2024-03-26T11:51:26ZNavigating the Middle Ground: Foreseeing the Trajectory of Mid-Sized Funds
Bergquist, Jesper
This research paper studies different types of fund managers, focusing on mid-size managers to determine their position and strategy in the future. Mid-size funds are unique because they are larger than small, specialized funds but not as large as the larger fund managers. Most research in finance, currently focuses on either very large or very small fund managers, leaving a gap in the knowledge about the fund managers in between, what in this report, is called mid-sized fund managers. Since mid-size fund managers constitute a large part of the market, together with the lack of knowledge about them, it is important to learn more about how they operate and perform. Our study therefore aims to fill this gap by looking at how these funds work, how they perform compared to bigger and smaller funds, and how they should strategize in the future. A mix of methods was used for our research. To gain an understanding of the existing research, a literature review was made. Also, a quantitative data analysis was made, through gathering and analyzing data over funds Morningstar rating, fees, risk, and return, categorized by small-size, mid-size, and large-size fund managers. This combination of methods helped to get a full picture of the situation for mid-sized funds, both what previous literature suggested and what the gathered data showed. The quantitative data analysis shows that mid-size fund managers often have funds with higher fees than others, and their performance can vary a lot. Both the literature review and the data analysis that was made show similar results. The size of a fund manager seems to matter, and to be in the mid-size area is not optimal and they will unique challenges because of their size. Their main strategy should be to grow, and increase their market share, through consolidation and M&A. Our findings give a clearer picture of mid-sized funds, which is extra useful for people who manage them or consider investing in them. Understanding the special position of mid-sized funds can help in making better decisions, especially in times when the market keeps changing.
2024-03-26T11:51:26ZBergquist, JesperThis research paper studies different types of fund managers, focusing on mid-size managers to determine their position and strategy in the future. Mid-size funds are unique because they are larger than small, specialized funds but not as large as the larger fund managers. Most research in finance, currently focuses on either very large or very small fund managers, leaving a gap in the knowledge about the fund managers in between, what in this report, is called mid-sized fund managers. Since mid-size fund managers constitute a large part of the market, together with the lack of knowledge about them, it is important to learn more about how they operate and perform. Our study therefore aims to fill this gap by looking at how these funds work, how they perform compared to bigger and smaller funds, and how they should strategize in the future. A mix of methods was used for our research. To gain an understanding of the existing research, a literature review was made. Also, a quantitative data analysis was made, through gathering and analyzing data over funds Morningstar rating, fees, risk, and return, categorized by small-size, mid-size, and large-size fund managers. This combination of methods helped to get a full picture of the situation for mid-sized funds, both what previous literature suggested and what the gathered data showed. The quantitative data analysis shows that mid-size fund managers often have funds with higher fees than others, and their performance can vary a lot. Both the literature review and the data analysis that was made show similar results. The size of a fund manager seems to matter, and to be in the mid-size area is not optimal and they will unique challenges because of their size. Their main strategy should be to grow, and increase their market share, through consolidation and M&A. Our findings give a clearer picture of mid-sized funds, which is extra useful for people who manage them or consider investing in them. Understanding the special position of mid-sized funds can help in making better decisions, especially in times when the market keeps changing.Navigating the Middle Ground: Foreseeing the Trajectory of Mid-Sized FundsJohansson, Danielhttp://hdl.handle.net/2117/4053632024-03-26T12:00:26Z2024-03-26T11:50:58ZNavigating the Middle Ground: Foreseeing the Trajectory of Mid-Sized Funds
Johansson, Daniel
This research paper studies different types of fund managers, focusing on mid-size managers to determine their position and strategy in the future. Mid-size funds are unique because they are larger than small, specialized funds but not as large as the larger fund managers. Most research in finance, currently focuses on either very large or very small fund managers, leaving a gap in the knowledge about the fund managers in between, what in this report, is called mid-sized fund managers. Since mid-size fund managers constitute a large part of the market, together with the lack of knowledge about them, it is important to learn more about how they operate and perform. Our study therefore aims to fill this gap by looking at how these funds work, how they perform compared to bigger and smaller funds, and how they should strategize in the future. A mix of methods was used for our research. To gain an understanding of the existing research, a literature review was made. Also, a quantitative data analysis was made, through gathering and analyzing data over funds Morningstar rating, fees, risk, and return, categorized by small-size, mid-size, and large-size fund managers. This combination of methods helped to get a full picture of the situation for mid-sized funds, both what previous literature suggested and what the gathered data showed. The quantitative data analysis shows that mid-size fund managers often have funds with higher fees than others, and their performance can vary a lot. Both the literature review and the data analysis that was made show similar results. The size of a fund manager seems to matter, and to be in the mid-size area is not optimal and they will unique challenges because of their size. Their main strategy should be to grow, and increase their market share, through consolidation and M&A. Our findings give a clearer picture of mid-sized funds, which is extra useful for people who manage them or consider investing in them. Understanding the special position of mid-sized funds can help in making better decisions, especially in times when the market keeps changing.
2024-03-26T11:50:58ZJohansson, DanielThis research paper studies different types of fund managers, focusing on mid-size managers to determine their position and strategy in the future. Mid-size funds are unique because they are larger than small, specialized funds but not as large as the larger fund managers. Most research in finance, currently focuses on either very large or very small fund managers, leaving a gap in the knowledge about the fund managers in between, what in this report, is called mid-sized fund managers. Since mid-size fund managers constitute a large part of the market, together with the lack of knowledge about them, it is important to learn more about how they operate and perform. Our study therefore aims to fill this gap by looking at how these funds work, how they perform compared to bigger and smaller funds, and how they should strategize in the future. A mix of methods was used for our research. To gain an understanding of the existing research, a literature review was made. Also, a quantitative data analysis was made, through gathering and analyzing data over funds Morningstar rating, fees, risk, and return, categorized by small-size, mid-size, and large-size fund managers. This combination of methods helped to get a full picture of the situation for mid-sized funds, both what previous literature suggested and what the gathered data showed. The quantitative data analysis shows that mid-size fund managers often have funds with higher fees than others, and their performance can vary a lot. Both the literature review and the data analysis that was made show similar results. The size of a fund manager seems to matter, and to be in the mid-size area is not optimal and they will unique challenges because of their size. Their main strategy should be to grow, and increase their market share, through consolidation and M&A. Our findings give a clearer picture of mid-sized funds, which is extra useful for people who manage them or consider investing in them. Understanding the special position of mid-sized funds can help in making better decisions, especially in times when the market keeps changing.Lean thinking, green living: Synergies for a sustainable futureSousa, Cláudiahttp://hdl.handle.net/2117/4053482024-03-26T11:10:20Z2024-03-26T11:03:16ZLean thinking, green living: Synergies for a sustainable future
Sousa, Cláudia
Lean production, the most extensive production paradigm now used in industry, has become one of the most popular themes in business and manufacturing literature during the past few decades. Value stream, continuous flow, pull systems, continuous improvement are the five principles that define Lean production as the significance of eliminating waste. In parallel with the Lean thinking, the Green strategy is also gaining importance in competition between companies. Many businesses are working to create goods or services that have less of an impact on the environment over a period of their lifecycle. The goal is to decrease the use of resources, remove risky materials, promote recycling, improve efficiency, and lower CO2 emissions. Waste reduction is an essential component of both the Lean and Green production paradigms, and combining these two approaches to management can produce beneficial outcomes.
2024-03-26T11:03:16ZSousa, CláudiaLean production, the most extensive production paradigm now used in industry, has become one of the most popular themes in business and manufacturing literature during the past few decades. Value stream, continuous flow, pull systems, continuous improvement are the five principles that define Lean production as the significance of eliminating waste. In parallel with the Lean thinking, the Green strategy is also gaining importance in competition between companies. Many businesses are working to create goods or services that have less of an impact on the environment over a period of their lifecycle. The goal is to decrease the use of resources, remove risky materials, promote recycling, improve efficiency, and lower CO2 emissions. Waste reduction is an essential component of both the Lean and Green production paradigms, and combining these two approaches to management can produce beneficial outcomes.Emerging charging technologies in road construction and infrastructureNyström, Albinhttp://hdl.handle.net/2117/4053052024-03-26T08:50:17Z2024-03-26T08:43:25ZEmerging charging technologies in road construction and infrastructure
Nyström, Albin
This research assignment discusses the evolution of smart road technologies and the role they play in the future transportation infrastructure. At a time when the world is in an electric transformation, the way roads are constructed needs to keep up with the development. This study provides a comprehensive technology forecast on emerging smart road systems. Central to this rapport is the study of different variants of Electrical Road Systems (ERS), including overhead conductive charging, bottom-attached conductive charging, and inductive charging technologies. The technology is explained and projects using the technologies are presented. The conductive projects treated are Siemens' eHighway which uses overhead conductive charging, eRoadArlanda and Elonroad with a bottom-attached conductive charging solution and Heliox Oppcharge, which is a pantograph that connects to bus roofs. The most dominant technology today is a conductive solution called Combined Charging System, CCS, which also is presented in the theory. Furthermore the paper presents five inductive R&Ds, with two projects adopting inductive charging in two different ways. For instance does the Detroit’s Electric Road System use inductive charging with a dynamic application, and the Taxi Fleet project uses the same technology but with a static configuration, both with the inductive charging system embedded in the road. The case studies practice the theories behind the ERS technologies in practical application which highlights the challenges and opportunities with implementing the systems. To obtain the most promising electric road solution for the next decade technological forecasting methods are applied. This research paper uses critical parameters like economic feasibility, energy efficiency, and Technology Readiness Level (TRL). In addition, technological road mapping is carried out and an expert in the field is interviewed. These methods analyze the different ERS theories and projects to gain an extensive understanding of which technology will be dominant in the future. When conducting the technological roadmapping the result showed that the conductive charging technology has been most dominant in R&D projects. The bottom-attached conductive charging solution is the newest technology on the market. When looking at the investment cost, it is high in all ERS. The technology worth investing in is not a one-fits-all solution and has to be a decision made on the needs and requirements of the geographic location. Furthermore, the experts were uncertain if dynamic ERS is the way to go in the future road infrastructure. With the current fast battery development, the static charging solutions might be more feasible. Nonetheless, they highlighted the importance of making decisions about which technology is going to be implemented depending on the geographic location and the local circumstances to ensure not becoming obsolescence in the near future. Each one of the projects showcases different combinations of effect and energy efficiency, addressing diverse transportation needs. Heavy duty transportation modes require significantly larger batteries to be able to travel long distances which in turn limits cargo capacity, having a dynamic ERS makes it possible to fit a variety of needs, both private and commercial.
2024-03-26T08:43:25ZNyström, AlbinThis research assignment discusses the evolution of smart road technologies and the role they play in the future transportation infrastructure. At a time when the world is in an electric transformation, the way roads are constructed needs to keep up with the development. This study provides a comprehensive technology forecast on emerging smart road systems. Central to this rapport is the study of different variants of Electrical Road Systems (ERS), including overhead conductive charging, bottom-attached conductive charging, and inductive charging technologies. The technology is explained and projects using the technologies are presented. The conductive projects treated are Siemens' eHighway which uses overhead conductive charging, eRoadArlanda and Elonroad with a bottom-attached conductive charging solution and Heliox Oppcharge, which is a pantograph that connects to bus roofs. The most dominant technology today is a conductive solution called Combined Charging System, CCS, which also is presented in the theory. Furthermore the paper presents five inductive R&Ds, with two projects adopting inductive charging in two different ways. For instance does the Detroit’s Electric Road System use inductive charging with a dynamic application, and the Taxi Fleet project uses the same technology but with a static configuration, both with the inductive charging system embedded in the road. The case studies practice the theories behind the ERS technologies in practical application which highlights the challenges and opportunities with implementing the systems. To obtain the most promising electric road solution for the next decade technological forecasting methods are applied. This research paper uses critical parameters like economic feasibility, energy efficiency, and Technology Readiness Level (TRL). In addition, technological road mapping is carried out and an expert in the field is interviewed. These methods analyze the different ERS theories and projects to gain an extensive understanding of which technology will be dominant in the future. When conducting the technological roadmapping the result showed that the conductive charging technology has been most dominant in R&D projects. The bottom-attached conductive charging solution is the newest technology on the market. When looking at the investment cost, it is high in all ERS. The technology worth investing in is not a one-fits-all solution and has to be a decision made on the needs and requirements of the geographic location. Furthermore, the experts were uncertain if dynamic ERS is the way to go in the future road infrastructure. With the current fast battery development, the static charging solutions might be more feasible. Nonetheless, they highlighted the importance of making decisions about which technology is going to be implemented depending on the geographic location and the local circumstances to ensure not becoming obsolescence in the near future. Each one of the projects showcases different combinations of effect and energy efficiency, addressing diverse transportation needs. Heavy duty transportation modes require significantly larger batteries to be able to travel long distances which in turn limits cargo capacity, having a dynamic ERS makes it possible to fit a variety of needs, both private and commercial.Emerging charging technologies in road construction and infrastructureNilsson, Alidahttp://hdl.handle.net/2117/4053042024-03-26T08:50:27Z2024-03-26T08:42:51ZEmerging charging technologies in road construction and infrastructure
Nilsson, Alida
This research assignment discusses the evolution of smart road technologies and the role they play in the future transportation infrastructure. At a time when the world is in an electric transformation, the way roads are constructed needs to keep up with the development. This study provides a comprehensive technology forecast on emerging smart road systems. Central to this rapport is the study of different variants of Electrical Road Systems (ERS), including overhead conductive charging, bottom-attached conductive charging, and inductive charging technologies. The technology is explained and projects using the technologies are presented. The conductive projects treated are Siemens' eHighway which uses overhead conductive charging, eRoadArlanda and Elonroad with a bottom-attached conductive charging solution and Heliox Oppcharge, which is a pantograph that connects to bus roofs. The most dominant technology today is a conductive solution called Combined Charging System, CCS, which also is presented in the theory. Furthermore the paper presents five inductive R&Ds, with two projects adopting inductive charging in two different ways. For instance does the Detroit’s Electric Road System use inductive charging with a dynamic application, and the Taxi Fleet project uses the same technology but with a static configuration, both with the inductive charging system embedded in the road. The case studies practice the theories behind the ERS technologies in practical application which highlights the challenges and opportunities with implementing the systems. To obtain the most promising electric road solution for the next decade technological forecasting methods are applied. This research paper uses critical parameters like economic feasibility, energy efficiency, and Technology Readiness Level (TRL). In addition, technological road mapping is carried out and an expert in the field is interviewed. These methods analyze the different ERS theories and projects to gain an extensive understanding of which technology will be dominant in the future. When conducting the technological roadmapping the result showed that the conductive charging technology has been most dominant in R&D projects. The bottom-attached conductive charging solution is the newest technology on the market. When looking at the investment cost, it is high in all ERS. The technology worth investing in is not a one-fits-all solution and has to be a decision made on the needs and requirements of the geographic location. Furthermore, the experts were uncertain if dynamic ERS is the way to go in the future road infrastructure. With the current fast battery development, the static charging solutions might be more feasible. Nonetheless, they highlighted the importance of making decisions about which technology is going to be implemented depending on the geographic location and the local circumstances to ensure not becoming obsolescence in the near future. Each one of the projects showcases different combinations of effect and energy efficiency, addressing diverse transportation needs. Heavy duty transportation modes require significantly larger batteries to be able to travel long distances which in turn limits cargo capacity, having a dynamic ERS makes it possible to fit a variety of needs, both private and commercial.
2024-03-26T08:42:51ZNilsson, AlidaThis research assignment discusses the evolution of smart road technologies and the role they play in the future transportation infrastructure. At a time when the world is in an electric transformation, the way roads are constructed needs to keep up with the development. This study provides a comprehensive technology forecast on emerging smart road systems. Central to this rapport is the study of different variants of Electrical Road Systems (ERS), including overhead conductive charging, bottom-attached conductive charging, and inductive charging technologies. The technology is explained and projects using the technologies are presented. The conductive projects treated are Siemens' eHighway which uses overhead conductive charging, eRoadArlanda and Elonroad with a bottom-attached conductive charging solution and Heliox Oppcharge, which is a pantograph that connects to bus roofs. The most dominant technology today is a conductive solution called Combined Charging System, CCS, which also is presented in the theory. Furthermore the paper presents five inductive R&Ds, with two projects adopting inductive charging in two different ways. For instance does the Detroit’s Electric Road System use inductive charging with a dynamic application, and the Taxi Fleet project uses the same technology but with a static configuration, both with the inductive charging system embedded in the road. The case studies practice the theories behind the ERS technologies in practical application which highlights the challenges and opportunities with implementing the systems. To obtain the most promising electric road solution for the next decade technological forecasting methods are applied. This research paper uses critical parameters like economic feasibility, energy efficiency, and Technology Readiness Level (TRL). In addition, technological road mapping is carried out and an expert in the field is interviewed. These methods analyze the different ERS theories and projects to gain an extensive understanding of which technology will be dominant in the future. When conducting the technological roadmapping the result showed that the conductive charging technology has been most dominant in R&D projects. The bottom-attached conductive charging solution is the newest technology on the market. When looking at the investment cost, it is high in all ERS. The technology worth investing in is not a one-fits-all solution and has to be a decision made on the needs and requirements of the geographic location. Furthermore, the experts were uncertain if dynamic ERS is the way to go in the future road infrastructure. With the current fast battery development, the static charging solutions might be more feasible. Nonetheless, they highlighted the importance of making decisions about which technology is going to be implemented depending on the geographic location and the local circumstances to ensure not becoming obsolescence in the near future. Each one of the projects showcases different combinations of effect and energy efficiency, addressing diverse transportation needs. Heavy duty transportation modes require significantly larger batteries to be able to travel long distances which in turn limits cargo capacity, having a dynamic ERS makes it possible to fit a variety of needs, both private and commercial.Recovery of Co(II) from process streams generated in the hydrometalurgical industryVourdoumpakis, Epameinondashttp://hdl.handle.net/2117/4043722024-03-13T08:40:22Z2024-03-13T08:34:09ZRecovery of Co(II) from process streams generated in the hydrometalurgical industry
Vourdoumpakis, Epameinondas
Due to the growing adoption of electric vehicles, there is a continuous rise in the global demand for
lithium-ion batteries, leading to potential challenges in the supply chain of raw materials, as the battery
production struggles to keep pace with the escalating demand. Recognizing the critical status of cobalt
as a raw material, recycling is considered as a viable option to establish an alternative supply source by
extracting cobalt from secondary resources. In this context, the METALLICO project, financed by the
European Union (EU), aims to create a fresh prospect for the EU by exploring novel processes for
manufacturing battery-grade materials.
As an integral component of the METALLICO initiative, this thesis focuses on the extraction of cobalt
from hydrometallurgical waste streams through the application of ion exchange (IX) resins, with the
aim of recovering cobalt (II). Batch sorption trials (i.e. screening and pH-dependence extraction) were
performed with synthetic solution mimicking the hydrometallurgical waste stream to assess the
characteristics of various resins, revealing that Lewatit VP OC 1026 exhibits notable selectivity for Zn
(>97% extraction at pH 3.5-4), while Purolite S930 demonstrates high affinity for Co and Cu (90% and
>99% extraction, respectively, at pH 3.5). Therefore, following a Mn oxidation and Fe precipitation
pre-treatment, column experiments were conducted involving VP OC 1026 for Zn removal and S930
for Ca removal, aiming to obtain an outlet comprising only Co and Cu. By subsequently raising the pH,
Cu would be induced to precipitate, resulting in a final stream containing solely Co.
A packed-bed column with VP OC 1026 successfully removed 1.65 ± 0.21 mg Zn g
-1
resin from a feed
solution containing Co, Cu, Zn, and Ca at pH 2. After saturating the resin, Zn was >99% eluted from the
resin with 15% H2SO4, which resulted in a concentration factor (CF) of 21 and an outlet concentration
of 1.05 ± 0.24 g L-1
. A minor presence of Ca at approximately 0.37 ± 0.14 g L-1 was detected. Conducting
the experiment with a feed solution (Co, Cu, Zn, Ca, Mn) at pH 4, an adsorption capacity of 0.95 ± 0.07
mg Zn g
-1
resin, with a subsequent elution that allowed to recover it completely (>99%). However, in
this scenario, the CF and outlet concentration were reduced to 7 and 0.34 ± 0.04 g L-1
, respectively. In
this case, outlet concentrations of Ca and Mn were 0.13 ± 0.03 g L-1 and 0.10 ± 0.03 g L-1
, respectively.
Another packed-bed column involving S930 and a feed solution (Co, Cu, Ca, Mn) at pH 3.5 provided
adsorption capacities of 40.85 ± 2.07 and 6.27 ± 0.07 mg g
-1
resin for Co and Cu, respectively, with a
subsequent recovery of >99% for both of them when performing the acidic elution. Specifically, Co
demonstrated a CF of 6, yielding an outlet concentration of 2.17 ± 0.38 g L-1
, while Cu exhibited a CF of
50, with an outlet concentration of 0.39 ± 0.08 g L-1
. Ca recorded the lowest outlet concentration at
0.20 ± 0.03 g L-1.
In conclusion, ion exchange resins represent a highly promising method for the recovery of cobalt from
hydrometallurgical waste streams. However, additional research may lead to improve outcomes in
terms of the ultimate purity of the solution.; A causa de la creixent implantació de vehicles elèctrics, hi ha un augment continu de la demanda global
de bateries d'ions de liti, que comporta possibles reptes en la cadena de subministrament de matèries
primeres, ja que la producció de bateries lluita per seguir el ritme de l'escalada demanda. Reconeixent
l'estat crític del cobalt com a matèria primera, el reciclatge es considera una opció viable per establir
una font de subministrament alternativa mitjançant l'extracció de cobalt de recursos secundaris. En
aquest context, el projecte METALLICO, finançat per la Unió Europea (UE), pretén crear una nova
perspectiva per a la UE explorant nous processos per a la fabricació de materials de qualitat de bateries.
Com a component integral de la iniciativa METALLICO, aquesta tesi se centra en l'extracció de cobalt
d’abocaments de residus hidrometal·lúrgics mitjançant l'aplicació de resines de bescanvi iònic (IX), per
a recuperar cobalt (II). Es van realitzar assajos d'adsorció per lots (cribratge i dependència de l’extracció
en funció del pH) amb una solució sintètica que imitava els abocaments hidrometal·lúrgics per avaluar
les característiques de diverses resines, revelant que Lewatit VP OC 1026 presentà una selectivitat
notable per al Zn (extracció de >97% a pH 3,5-4), mentre que Purolite S930 demostrà una gran afinitat
pel Co i Cu (extracció del 90% i > 99%, respectivament, a pH 3,5). Després d'un pretractament
d'oxidació de Mn i precipitació de Fe, es van realitzar experiments de columna amb VP OC 1026 per a
l'eliminació de Zn i S930 per a l'eliminació de Ca, per obtenir un efluent comprés només per Co i Cu.
Augmentar llavors el pH induiria el Cu a precipitar, originant un corrent que només contindria Co.
Una columna de llit empaquetat amb VP OC 1026 eliminà amb èxit 1,65 ± 0,21 mg de resina Zn g-1
d'una solució d'alimentació que contenia Co, Cu, Zn i Ca a pH 2. Després de saturar la resina, es va eluir
>99% de Zn de la resina amb H2SO4 15%, obtenint un factor de concentració (CF) de 21 i una
concentració de sortida d'1,05 ± 0,24 g L-1
. Es detectà una presència menor de Ca d’uns 0,37 ± 0,14 g
L
-1
. Realitzant l'experiment amb una solució d'alimentació (Co, Cu, Zn, Ca, Mn) a pH 4, s’obtingué una
capacitat d'adsorció de 0,95 ± 0,07 mg Zn g-1 de resina, amb una elució posterior que va permetre
recuperar-lo completament (>99% ). Tanmateix, en aquest cas, el CF i la concentració de sortida es van
reduir a 7 i 0,34 ± 0,04 g L-1
, respectivament. En aquest cas, les concentracions de sortida de Ca i Mn
eren de 0,13 ± 0,03 g L-1
i 0,10 ± 0,03 g L-1
, respectivament. Una altra columna de llit empaquetat amb
S930 i una alimentació (Co, Cu, Ca, Mn) a pH 3,5 proporcionà capacitats d'adsorció de 40,85 ± 2,07 i
6,27 ± 0,07 mg g-1 de resina per a Co i Cu, respectivament, amb una recuperació posterior de >99% per
a tots dos en realitzar l'elució àcida. Concretament, pel Co s’obtingué un CF de 6, amb una concentració
de sortida de 2,17 ± 0,38 g L-1
, mentre que el Cu va mostrar un CF de 50, amb una concentració de
sortida de 0,39 ± 0,08 g L-1
. El Ca va registrar la concentració de sortida més baixa de 0,20 ± 0,03 g L-1.
En conclusió, les resines de bescanvi iònic representen un mètode molt prometedor per a la
recuperació de cobalt a partir d’abocaments de residus hidrometal·lúrgics. No obstant, investigacions
addicionals poden conduir a millorar els resultats en termes de puresa final de la solució.
.; Debido a la creciente implantación de vehículos eléctricos, hay un aumento continuo en la demanda
mundial de baterías de iones de litio, lo que lleva a posibles desafíos en la cadena de suministro de
materias primas, ya que la producción de baterías lucha por mantener el ritmo de la creciente
demanda. Reconociendo la situación crítica del cobalto como materia prima, el reciclaje se considera
una opción viable para establecer una fuente de suministro alternativa extrayendo cobalto de recursos
secundarios. En este contexto, el proyecto METALLICO, financiado por la Unión Europea (UE), pretende
crear una nueva perspectiva para la UE explorando procesos novedosos para fabricar materiales aptos
para baterías.
Como componente integral de la iniciativa METALLICO, esta tesis se centra en la extracción de cobalto
a partir de vertidos de residuos hidrometalúrgicos mediante la aplicación de resinas de intercambio
iónico (IX), con el objetivo de recuperar cobalto (II). Se realizaron ensayos de sorción por lotes (cribado
y dependencia de la extracción en función del pH) con una solución sintética que imitaba los vertidos
hidrometalúrgicos para evaluar las características de varias resinas, revelando que Lewatit VP OC 1026
mostró una notable selectividad por el Zn (>97% de extracción a pH 3,5-4), mientras que Purolite S930
demostró una alta afinidad por el Co y el Cu (90% y >99% de extracción, respectivamente, a pH 3,5).
Por lo tanto, tras un pretratamiento de oxidación de Mn y precipitación de Fe, se realizaron
experimentos en columna con VP OC 1026 para la eliminación de Zn y con S930 para la eliminación de
Ca, para obtener una salida compuesta únicamente por Co y Cu. Aumentando entonces el pH, se
induciría la precipitación del Cu, que daría lugar a una corriente final que contendría únicamente Co.
Una columna de lecho empacado con VP OC 1026 eliminó con éxito 1,65 ± 0,21 mg Zn g-1 de resina de
una solución de alimentación que contenía Co, Cu, Zn, Ca a pH 2. Después de saturar la resina, se eluyó
>99% de Zn de la resina con H2SO4 al 15%, obteniendo un factor de concentración (CF) de 21 y una
concentración de salida de 1,05 ± 0,24 g L-1
. Se detectó una presencia menor de Ca de unos 0,37 ± 0,14
g L-1
. Realizando el experimento con una solución de alimentación (Co, Cu, Zn, Ca, Mn) a pH 4, se obtuvo
una capacidad de adsorción de 0,95 ± 0,07 mg Zn g-1 de resina, con una elución posterior que permitió
recuperarlo completamente (>99%). Sin embargo, en este escenario, el CF y la concentración de salida
se redujeron a 7 y 0,34 ± 0,04 g L-1
, respectivamente. En este caso, las concentraciones de salida de Ca
y Mn fueron de 0,13 ± 0,03 g L-1
y 0,10 ± 0,03 g L-1
, respectivamente. Otra columna de lecho empacado
con S930 y una solución de alimentación (Co, Cu, Ca, Mn) a pH 3,5 proporcionó capacidades de
adsorción de 40,85 ± 2,07 y 6,27 ± 0,07 mg g-1 de resina para Co y Cu, respectivamente, con una
recuperación posterior de >99% para ambos al realizar la elución ácida. Concretamente, el Co
demostró un CF de 6, dando lugar a una concentración de salida de 2,17 ± 0,38 g L-1
, mientras que el
Cu exhibió un CF de 50, con una concentración de salida de 0,39 ± 0,08 g L-1
. El Ca registró la
concentración de salida más baja con 0,20 ± 0,03 g L-1. En conclusión, las resinas de intercambio iónico representan un método muy prometedor para la
recuperación de cobalto a partir de vertidos de residuos hidrometalúrgicos. Sin embargo,
investigaciones adicionales pueden conducir a mejorar los resultados en cuanto a la pureza final de la
solución.
.
2024-03-13T08:34:09ZVourdoumpakis, EpameinondasDue to the growing adoption of electric vehicles, there is a continuous rise in the global demand for
lithium-ion batteries, leading to potential challenges in the supply chain of raw materials, as the battery
production struggles to keep pace with the escalating demand. Recognizing the critical status of cobalt
as a raw material, recycling is considered as a viable option to establish an alternative supply source by
extracting cobalt from secondary resources. In this context, the METALLICO project, financed by the
European Union (EU), aims to create a fresh prospect for the EU by exploring novel processes for
manufacturing battery-grade materials.
As an integral component of the METALLICO initiative, this thesis focuses on the extraction of cobalt
from hydrometallurgical waste streams through the application of ion exchange (IX) resins, with the
aim of recovering cobalt (II). Batch sorption trials (i.e. screening and pH-dependence extraction) were
performed with synthetic solution mimicking the hydrometallurgical waste stream to assess the
characteristics of various resins, revealing that Lewatit VP OC 1026 exhibits notable selectivity for Zn
(>97% extraction at pH 3.5-4), while Purolite S930 demonstrates high affinity for Co and Cu (90% and
>99% extraction, respectively, at pH 3.5). Therefore, following a Mn oxidation and Fe precipitation
pre-treatment, column experiments were conducted involving VP OC 1026 for Zn removal and S930
for Ca removal, aiming to obtain an outlet comprising only Co and Cu. By subsequently raising the pH,
Cu would be induced to precipitate, resulting in a final stream containing solely Co.
A packed-bed column with VP OC 1026 successfully removed 1.65 ± 0.21 mg Zn g
-1
resin from a feed
solution containing Co, Cu, Zn, and Ca at pH 2. After saturating the resin, Zn was >99% eluted from the
resin with 15% H2SO4, which resulted in a concentration factor (CF) of 21 and an outlet concentration
of 1.05 ± 0.24 g L-1
. A minor presence of Ca at approximately 0.37 ± 0.14 g L-1 was detected. Conducting
the experiment with a feed solution (Co, Cu, Zn, Ca, Mn) at pH 4, an adsorption capacity of 0.95 ± 0.07
mg Zn g
-1
resin, with a subsequent elution that allowed to recover it completely (>99%). However, in
this scenario, the CF and outlet concentration were reduced to 7 and 0.34 ± 0.04 g L-1
, respectively. In
this case, outlet concentrations of Ca and Mn were 0.13 ± 0.03 g L-1 and 0.10 ± 0.03 g L-1
, respectively.
Another packed-bed column involving S930 and a feed solution (Co, Cu, Ca, Mn) at pH 3.5 provided
adsorption capacities of 40.85 ± 2.07 and 6.27 ± 0.07 mg g
-1
resin for Co and Cu, respectively, with a
subsequent recovery of >99% for both of them when performing the acidic elution. Specifically, Co
demonstrated a CF of 6, yielding an outlet concentration of 2.17 ± 0.38 g L-1
, while Cu exhibited a CF of
50, with an outlet concentration of 0.39 ± 0.08 g L-1
. Ca recorded the lowest outlet concentration at
0.20 ± 0.03 g L-1.
In conclusion, ion exchange resins represent a highly promising method for the recovery of cobalt from
hydrometallurgical waste streams. However, additional research may lead to improve outcomes in
terms of the ultimate purity of the solution.
A causa de la creixent implantació de vehicles elèctrics, hi ha un augment continu de la demanda global
de bateries d'ions de liti, que comporta possibles reptes en la cadena de subministrament de matèries
primeres, ja que la producció de bateries lluita per seguir el ritme de l'escalada demanda. Reconeixent
l'estat crític del cobalt com a matèria primera, el reciclatge es considera una opció viable per establir
una font de subministrament alternativa mitjançant l'extracció de cobalt de recursos secundaris. En
aquest context, el projecte METALLICO, finançat per la Unió Europea (UE), pretén crear una nova
perspectiva per a la UE explorant nous processos per a la fabricació de materials de qualitat de bateries.
Com a component integral de la iniciativa METALLICO, aquesta tesi se centra en l'extracció de cobalt
d’abocaments de residus hidrometal·lúrgics mitjançant l'aplicació de resines de bescanvi iònic (IX), per
a recuperar cobalt (II). Es van realitzar assajos d'adsorció per lots (cribratge i dependència de l’extracció
en funció del pH) amb una solució sintètica que imitava els abocaments hidrometal·lúrgics per avaluar
les característiques de diverses resines, revelant que Lewatit VP OC 1026 presentà una selectivitat
notable per al Zn (extracció de >97% a pH 3,5-4), mentre que Purolite S930 demostrà una gran afinitat
pel Co i Cu (extracció del 90% i > 99%, respectivament, a pH 3,5). Després d'un pretractament
d'oxidació de Mn i precipitació de Fe, es van realitzar experiments de columna amb VP OC 1026 per a
l'eliminació de Zn i S930 per a l'eliminació de Ca, per obtenir un efluent comprés només per Co i Cu.
Augmentar llavors el pH induiria el Cu a precipitar, originant un corrent que només contindria Co.
Una columna de llit empaquetat amb VP OC 1026 eliminà amb èxit 1,65 ± 0,21 mg de resina Zn g-1
d'una solució d'alimentació que contenia Co, Cu, Zn i Ca a pH 2. Després de saturar la resina, es va eluir
>99% de Zn de la resina amb H2SO4 15%, obtenint un factor de concentració (CF) de 21 i una
concentració de sortida d'1,05 ± 0,24 g L-1
. Es detectà una presència menor de Ca d’uns 0,37 ± 0,14 g
L
-1
. Realitzant l'experiment amb una solució d'alimentació (Co, Cu, Zn, Ca, Mn) a pH 4, s’obtingué una
capacitat d'adsorció de 0,95 ± 0,07 mg Zn g-1 de resina, amb una elució posterior que va permetre
recuperar-lo completament (>99% ). Tanmateix, en aquest cas, el CF i la concentració de sortida es van
reduir a 7 i 0,34 ± 0,04 g L-1
, respectivament. En aquest cas, les concentracions de sortida de Ca i Mn
eren de 0,13 ± 0,03 g L-1
i 0,10 ± 0,03 g L-1
, respectivament. Una altra columna de llit empaquetat amb
S930 i una alimentació (Co, Cu, Ca, Mn) a pH 3,5 proporcionà capacitats d'adsorció de 40,85 ± 2,07 i
6,27 ± 0,07 mg g-1 de resina per a Co i Cu, respectivament, amb una recuperació posterior de >99% per
a tots dos en realitzar l'elució àcida. Concretament, pel Co s’obtingué un CF de 6, amb una concentració
de sortida de 2,17 ± 0,38 g L-1
, mentre que el Cu va mostrar un CF de 50, amb una concentració de
sortida de 0,39 ± 0,08 g L-1
. El Ca va registrar la concentració de sortida més baixa de 0,20 ± 0,03 g L-1.
En conclusió, les resines de bescanvi iònic representen un mètode molt prometedor per a la
recuperació de cobalt a partir d’abocaments de residus hidrometal·lúrgics. No obstant, investigacions
addicionals poden conduir a millorar els resultats en termes de puresa final de la solució.
.
Debido a la creciente implantación de vehículos eléctricos, hay un aumento continuo en la demanda
mundial de baterías de iones de litio, lo que lleva a posibles desafíos en la cadena de suministro de
materias primas, ya que la producción de baterías lucha por mantener el ritmo de la creciente
demanda. Reconociendo la situación crítica del cobalto como materia prima, el reciclaje se considera
una opción viable para establecer una fuente de suministro alternativa extrayendo cobalto de recursos
secundarios. En este contexto, el proyecto METALLICO, financiado por la Unión Europea (UE), pretende
crear una nueva perspectiva para la UE explorando procesos novedosos para fabricar materiales aptos
para baterías.
Como componente integral de la iniciativa METALLICO, esta tesis se centra en la extracción de cobalto
a partir de vertidos de residuos hidrometalúrgicos mediante la aplicación de resinas de intercambio
iónico (IX), con el objetivo de recuperar cobalto (II). Se realizaron ensayos de sorción por lotes (cribado
y dependencia de la extracción en función del pH) con una solución sintética que imitaba los vertidos
hidrometalúrgicos para evaluar las características de varias resinas, revelando que Lewatit VP OC 1026
mostró una notable selectividad por el Zn (>97% de extracción a pH 3,5-4), mientras que Purolite S930
demostró una alta afinidad por el Co y el Cu (90% y >99% de extracción, respectivamente, a pH 3,5).
Por lo tanto, tras un pretratamiento de oxidación de Mn y precipitación de Fe, se realizaron
experimentos en columna con VP OC 1026 para la eliminación de Zn y con S930 para la eliminación de
Ca, para obtener una salida compuesta únicamente por Co y Cu. Aumentando entonces el pH, se
induciría la precipitación del Cu, que daría lugar a una corriente final que contendría únicamente Co.
Una columna de lecho empacado con VP OC 1026 eliminó con éxito 1,65 ± 0,21 mg Zn g-1 de resina de
una solución de alimentación que contenía Co, Cu, Zn, Ca a pH 2. Después de saturar la resina, se eluyó
>99% de Zn de la resina con H2SO4 al 15%, obteniendo un factor de concentración (CF) de 21 y una
concentración de salida de 1,05 ± 0,24 g L-1
. Se detectó una presencia menor de Ca de unos 0,37 ± 0,14
g L-1
. Realizando el experimento con una solución de alimentación (Co, Cu, Zn, Ca, Mn) a pH 4, se obtuvo
una capacidad de adsorción de 0,95 ± 0,07 mg Zn g-1 de resina, con una elución posterior que permitió
recuperarlo completamente (>99%). Sin embargo, en este escenario, el CF y la concentración de salida
se redujeron a 7 y 0,34 ± 0,04 g L-1
, respectivamente. En este caso, las concentraciones de salida de Ca
y Mn fueron de 0,13 ± 0,03 g L-1
y 0,10 ± 0,03 g L-1
, respectivamente. Otra columna de lecho empacado
con S930 y una solución de alimentación (Co, Cu, Ca, Mn) a pH 3,5 proporcionó capacidades de
adsorción de 40,85 ± 2,07 y 6,27 ± 0,07 mg g-1 de resina para Co y Cu, respectivamente, con una
recuperación posterior de >99% para ambos al realizar la elución ácida. Concretamente, el Co
demostró un CF de 6, dando lugar a una concentración de salida de 2,17 ± 0,38 g L-1
, mientras que el
Cu exhibió un CF de 50, con una concentración de salida de 0,39 ± 0,08 g L-1
. El Ca registró la
concentración de salida más baja con 0,20 ± 0,03 g L-1. En conclusión, las resinas de intercambio iónico representan un método muy prometedor para la
recuperación de cobalto a partir de vertidos de residuos hidrometalúrgicos. Sin embargo,
investigaciones adicionales pueden conducir a mejorar los resultados en cuanto a la pureza final de la
solución.
.Water reclamation from acidic mine waters using nanofiltration membranesRapti, Antoniahttp://hdl.handle.net/2117/4042042024-03-12T13:00:45Z2024-03-12T12:56:20ZWater reclamation from acidic mine waters using nanofiltration membranes
Rapti, Antonia
2024-03-12T12:56:20ZRapti, AntoniaBlending of nylon 56 with elastomers. Characterization and propertiesRomano, Théahttp://hdl.handle.net/2117/4039192024-03-07T11:30:24Z2024-03-07T11:29:58ZBlending of nylon 56 with elastomers. Characterization and properties
Romano, Théa
This research project explores the properties resulting from the combination of nylon 5,6 with natural rubber. The results underline the challenges involved in obtaining a homogeneous blend, highlighting the complexities of interactions between the components. A satisfactory blend was achieved by obtaining a Brabender. To briefly describe the main methods employed, analysis by Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC) confirmed the semi-crystalline nature of nylon 5,6 and the amorphous nature of rubber. In addition, thermogravimetric analysis (TGA) identified degradation residues, suggesting the possible commercial origin of the polymer. Mechanical tests revealed that, although nylon alone resisted higher stress, the blend offered greater deformability. Polarized light microscopy revealed morphological changes, while the addition of natural rubber decreased the crystallization rate of nylon 5,6. Overall, this study makes a significant contribution to our understanding of polymer blends, offering innovative perspectives for a variety of industrial applications.
2024-03-07T11:29:58ZRomano, ThéaThis research project explores the properties resulting from the combination of nylon 5,6 with natural rubber. The results underline the challenges involved in obtaining a homogeneous blend, highlighting the complexities of interactions between the components. A satisfactory blend was achieved by obtaining a Brabender. To briefly describe the main methods employed, analysis by Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC) confirmed the semi-crystalline nature of nylon 5,6 and the amorphous nature of rubber. In addition, thermogravimetric analysis (TGA) identified degradation residues, suggesting the possible commercial origin of the polymer. Mechanical tests revealed that, although nylon alone resisted higher stress, the blend offered greater deformability. Polarized light microscopy revealed morphological changes, while the addition of natural rubber decreased the crystallization rate of nylon 5,6. Overall, this study makes a significant contribution to our understanding of polymer blends, offering innovative perspectives for a variety of industrial applications.