Browsing by Subject "Química ambiental"

Now showing items 1-20 of 23

    • An Improved system for modelling Spanish emissions: HERMESv2.0 

      Guevara Vilardell, Marc; Martínez Palau, Francesc; Arevalo Roa, Gustavo; Gassó Domingo, Santiago; Baldasano Recio, José María (2013-12)
      Article
      Restricted access - publisher's policy
      Emission models play a key role in the development of high-resolution air quality modelling systems AQMS.To minimise the uncertainty presented by these models,it is essential to match the highresolution requirements of ...

    • Analysis of ground-based Rn-222 measurements over Spain: filling the gap in southwestern Europe 

      Grossi, Claudia; Agueda Costafreda, Alba; Vogel, Felix; Vargas Drechsler, Arturo; Zimnoch, M.; Wach, P.; Martín, J. E.; López Coto, Israel; Bolívar Raya, Juan Pedro; Morguí, Josep Anton; Rodó, Xavier (2016-09-27)
      Article
      Open Access
      Harmonized atmospheric 222Rn observations are required by the scientific community: these data have been lacking in southern Europe. We report on three recently established ground-based atmospheric 222Rn monitoring stations ...

    • Bioacumulación de ingredientes de cremas solares en fauna marina de bancos naturales, de interés económico en Perú 

      Flores Haqquehua, Flor De María (Universitat Politècnica de Catalunya, 2015-09)
      Master thesis
      Restricted access - author's decision

    • Biotrickling filters for biogas sweetening: oxygen transfer improvement for a reliable operation 

      Rodriguez Mary, Ginesta; Dorado Castaño, Antonio David; Fortuny Picornell, Marc; Gabriel Buguña, David; Gamisans Noguera, Javier (2014)
      Article
      Open Access
      An industrial-scale biotrickling filter for the removal of high concentrations of H2S is described in this work. The system has been operating at H2S inlet concentrations between 1000 and 3000 ppmv at acidic conditions. A ...

    • Daphnia magna bioassays to detect novel eco-toxicological effects of prioritary and emergent contaminants 

      Campos, Bruno (Universitat Politècnica de Catalunya, 2014-01-10)
      Doctoral thesis
      Open Access
      There is increasing evidence that the presence of many emerging pollutants in aquatic ecosystems may have detrimental effects on aquatic biota. Of special concern are those emerging pollutants that may act as putative ...

    • Desenvolupament d’un model basat en la lògica difusa per a l’avaluació del risc dels retardants de flama bromats en ecosistemes aquàtics d’Amèrica Llatina 

      Pujolasus i Fructuoso, Edgar (Universitat Politècnica de Catalunya, 2011-04)
      Master thesis (pre-Bologna period)
      Open Access
      Aquest estudi, en el qual s'ha desenvolupat un model per a l'avaluació del risc ambiental que generen els retardants de flama bromats (BFRs) en els organismes aquàtics de dos ecosistemes d'Amèrica Llatina, està vinculat ...

    • Eliminació de NOx mitjançant absorbents regenerables 

      Rivas Redondo, Alejandro (Universitat Politècnica de Catalunya, 2019-05-22)
      Bachelor thesis
      Restricted access - author's decision
      Els processos industrials que depenen de l’energia obtinguda a partir de la combustió de combustibles fòssils tenen com a conseqüència l’aparició de diversos subproductes molt nocius tant pel medi ambient com per la salut ...

    • Emulsions d'aigua en gasoil. 

      Gibert Buxeda, Marc (Universitat Politècnica de Catalunya, 2013-06)
      Bachelor thesis
      Open Access
      Pensant en la importància de la cura del medi ambient, i tenint en compte els problemes de contaminació, especialment a les ciutats, s'han realitzat diferents estudis sobre nous combustibles més ecològics. L’objectiu ...

    • Environmental Risk Assessment of Polybrominated Diphenyl Ether (PBDE) and Hexabromocyclododecane (HBCD) in Ebro River Basin 

      Betrò, Stefano (Universitat Politècnica de Catalunya, 2011-02)
      Master thesis (pre-Bologna period)
      Open Access
      In this study, a model for the evaluation of the environmental risk of polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) for the aquatic organisms has been developed. These compounds are brominated ...

    • Estudi dels components i propietats químiques de les plantes del bosc 

      Casals Chavarria, Antoni (Universitat Politècnica de Catalunya, 2020-07-16)
      Bachelor thesis
      Restricted access - author's decision
      Aquest treball tracta de l'estudi dels compostos químics que contenen les plantes del bosc i de les moltes aplicacions que poden tenir. Primer de tot es fa una breu exposició teòrica de quins són els diferents tipus de ...

    • First estimation of CH4fluxes using the222Rn Tracer Method over the central Iberian Peninsula 

      Grossi, Claudia; Vogel, Felix; Morguí, Josep Anton; Curcoll Masanes, Roger; Agueda Costafreda, Alba; Batet Torrell, Óscar; Nofuentes, Manel; Occhipinti, Paola; Vargas Drechsler, Arturo; Rodó, Xavier (WIT Press, 2014)
      Conference report
      Open Access
      Emissions of CH4 over the central Iberian Peninsula have been estimated experimentally for the first time using the Radon Tracer Method (RTM), which uses the atmospheric noble radioactive gas 222Rn as an auxiliary tracer. ...

    • Impact of HONO sources on the performance of mesoscale air quality models 

      Gonçalves Ageitos, María; Dabdubd, D.; Chang, W.L.; Jorba Casellas, Oriol; Baldasano Recio, José María (2012)
      Article
      Open Access
      Nitrous acid (HONO) photolysis constitutes a primary source of OH in the early morning, which leads to changes in model gas-phase and particulate matter concentrations. However, state-of-the-art models of chemical ...

    • Inter-comparison of commercial continuous radon monitors responses 

      Radulescu, Ileana; Calin, M. R.; Luca, A.; Röttger, Annette; Grossi, Claudia; Done, Laurentiu; Ioan, M. R. (2022-01)
      Article
      Open Access
      Indoor and outdoor (atmospheric) radon activity concentrations need to be measured as accurate as possible for radiation protection and for climate applications. Particularly radon concentrations below 100 Bq m -3, useful ...

    • Intercomparison study of atmospheric 222Rn and 222Rn progeny monitors 

      Grossi, Claudia; Chambers, Scott Dudley; Vogel, Felix; Vargas Drechsler, Arturo (2020-05-08)
      Article
      Open Access
      The use of the noble gas radon (222Rn) as a tracer for different research studies, for example observation-based estimation of greenhouse gas (GHG) fluxes, has led to the need of high-quality 222Rn activity concentration ...

    • La química del bosc 

      Calsina Rodriguez, Oriol (Universitat Politècnica de Catalunya, 2020-07-16)
      Bachelor thesis
      Restricted access - author's decision
      El present treball pretén demostrar la importància del bosc en les nostres vides i també demostrar que la química està present en tots els productes derivats del bosc. Els boscos són indispensables per la supervivència ...

    • New metrology for radon at the environmental level 

      Röttger, Annette; Röttger, Stefan; Grossi, Claudia; Vargas Drechsler, Arturo; Curcoll Masanes, Roger; Otáhal, Petr; Hernández Ceballos, Miguel Ángel; Cinelli, Giorgia; Chambers, Scott Dudley; Barbosa, Susana Alexandra; Ioan, M. R.; Radulescu, Ileana (2021-09-23)
      Article
      Open Access
      Radon gas is the largest source of public exposure to naturally occurring radioactivity. However, radon is also a useful tracer for understanding atmospheric processes, assessing the accuracy of chemical transport models, ...

    • Phosphate removal and recovery from water using nanocomposite of immobilized magnetite nanoparticles on cationic polymer 

      Abo Markeb, Ahmad; Alonso, Amanda; Dorado Castaño, Antonio David; Sánchez, Antoni; Font, Xavier (2016-02-17)
      Article
      Open Access

    • Presentation of the EURODELTA III intercomparison exercise-evaluation of the chemistry transport models' performance on criteria pollutants and joint analysis with meteorology 

      Bessagnet, B.; Pirovano, G.; Mircea, M.; Cuvelier, C.; Aulinger, A.; Calori, G.; Ciarelli, G.; Manders, A.; Stern, R.; Tsyro, S.; García Vivanco, Marta; Thunis, P.; Pay Pérez, M. Teresa; Colette, A.; Baldasano Recio, José María (2016-10)
      Article
      Open Access
      The EURODELTA III exercise has facilitated a comprehensive intercomparison and evaluation of chemistry transport model performances. Participating models performed calculations for four 1-month periods in different seasons ...

    • Quality study of electret radon flux monitors by an “in situ” intercomparison campaign in Spain 

      Grossi, Claudia; Vargas Drechsler, Arturo; Arnold, Delia (International Energy Agency, 2011)
      Conference report
      Open Access
      Radon is nowadays used as a tracer for atmospheric transport model validation because of its physical and chemical characteristics. 222Rn source term characterization becomes necessary for more accurate validations into ...

    • Radon metrology for use in climate change observation and radiation protection at the environmental level 

      Röttger, Stefan; Röttger, Annette; Grossi, Claudia; Vargas Drechsler, Arturo; Karstens, Ute; Cinelli, Giorgia; Chung, Edward; Kikaj, Dafina; Rennick, Chris; Mertes, Florian; Radulescu, Ileana (European Geosciences Union (EGU), 2022-03-10)
      Article
      Open Access
      Radon (222Rn) gas is the largest source of public exposure to naturally occurring radioactivity and the identification of radon priority areas is required by the Council Directive 2013/59/Euratom. Radon is also used as a ...