Browsing by Author "Hoffmann Sampaio, Carlos"
Now showing items 1-20 of 34
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A three-dimensional nanoscale study in selected coal mine drainage
(2020-06-01)
Article
Open AccessSediments from coal mine drainages (CMDs) contain large quantities of suspended pollutants (possibly numerous chemical substances) along with sulfates and hazardous elements (e.g., chromium, zinc, copper, lead) that ... -
Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser
(Elsevier, 2020-02-01)
Article
Open AccessThis study aimed to investigate phosphate removal from aqueous effluents by an inorganic sludge from the inert part of construction and demolition wastes (CSW) as adsorbent. It is also discussed the application of the ... -
Affinity of dual energy X-ray transmission sensors on minerals bearing heavy rare earth elements
(2020-03-01)
Article
Open AccessThis work demonstrates the effective use of automatic sensor-based sorting technology as a viable separation method for rare earth element (REE) rich ores composed primarily of xenotime minerals with gagarinite-(Y) and ... -
Aplicação e avaliação do uso de concentrador centrifugo a5-b para obtenção de concentrado de minério primário de au – Peixoto de Azevedo (mt)
(Galoá, 2022)
Conference lecture
Open AccessAtualmente, num mundo cada vez mais competitivo, o rendimento das atividades humanas deve ser o maior possível, seja através da melhoria de técnicas ou tecnologias. Com o preço do ouro em alta e baixos teores de ouro nas ... -
Atmospheric nanocompounds on Lanzarote Island: vehicular exhaust and igneous geologic formation interactions
(2020-09-01)
Article
Open AccessAtmosphere contamination management is one of the most important features in pollution risk management. The worldwide rise in tourism increases apprehension about its probable destructive conservation influence on various ... -
Caracterização de rejeito aluvionar de minério de ouro da região de Peixoto de Azevedo (mt)
(Galoá, 2022)
Conference lecture
Open AccessA extração de ouro nos garimpos, que na maioria das vezes é feita de forma rudimentar (apenas por gravimetria), não garante a obtenção de um bom rendimento, o que gera rejeitos (curimã) com alto teor de minério (ouro). ... -
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate
(2021-07-26)
Article
Open Access -
Concentração de resíduos de construção e demolição por sensor-based sorting
(Galoá, 2022)
Conference lecture
Open AccessOs Resíduos de Construção e Demolição (RCD) apresentam composições diferentes, dependendo da construção do prédio, tamanho da cidade, desenvolvimento do país etc. Os principais componentes do RCD são o concreto e a cerâmica ... -
Construction and demolition waste recycling through conventional jig, air jig, and sensor-based sorting: a comparison
(2021-08-21)
Article
Open Access -
Coupling of attrition and accelerated carbonation for CO2 sequestration in recycled concrete aggregates
(Elsevier BV, 2021-07)
Article
Open Access -
Current applications of recycled aggregates from construction and demolition: a review
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-30)
Article
Open AccessA literature review comprising 163 publications published over a period of 26 years from 1992 to 2018 is presented in this paper. This review discusses the generation and recycling of construction and demolition waste (CDW) ... -
Demolished concretes recycling by the use of pneumatic jigs
(2020-01-01)
Article
Open AccessLarge quantities of construction and demolition waste is generated annually around the world. Part of this material is processed in recycling plants. After removing metals, fines and lights, the construction and demolition ... -
Destoning the Moatize coal seam, Mozambique, by dry jigging
(2020-08-31)
Article
Open AccessThis paper proposes pre-beneficiation studies by air jigs of the coal layers from a Moatize coal deposit. Pre-beneficiation, also called destoning, removes tailings before the beneficiation plant. The air jigs operate in ... -
Development of a physical separation route for the concentration of base metals from old wasted printed circuit boards
(2021-09-18)
Article
Open Access -
Editorial for Special Issue “Gravity Concentration”
(2021-11-30)
Article
Open Access -
Effect of concrete carbonation on phosphate removal through adsorption process and its potential application as fertilizer
(2020-05-20)
Article
Open AccessConcrete slurry is an abundant, cheap, and commonly found waste all over the world where construction activities take place; concrete slurry, which is rich in calcium and metallic oxides, could be successfully employed in ... -
Fabrication, microstructure, and properties of fired clay bricks using construction and demolition waste sludge as the main additive
(2020-06-10)
Article
Open AccessGreen routes to prepare or manufacture sustainable building materials have been attracting much attention over the years targeting sustainability issues. In this investigation, for the first time, sludge from the inert ... -
Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
(2020-05-30)
Article
Open AccessThis paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and its application in the photocatalytic hexavalent chromium reduction. The ... -
Fire resistance performance of concrete-PVC panels with polyvinyl chloride (PVC) stay in place (SIP) formwork
(Elsevier, 2019-09-01)
Article
Open AccessStay-in-place (SIP) formwork is a more-practical alternative to traditional steel or wood formworks due to its improved constructability and durability. The aim of this paper was to study the fire resistance performances ... -
Influence of igneous intrusions on coal flotation feasibility: the case of Moatize Mine, Mozambique
(2023-01-21)
Article
Open AccessIn this study, the influence on the properties of coal caused by proximity with an igneous intrusion in the Moatize mine was evaluated, together with the possibility of beneficiating such coal in the flotation circuit of ...
