Pollutant Degradation
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. Preparação, modoficação, caracterização e aplicação de catalisadores visando a degradação de compostos orgânicos poluentes por processos oxidativos avançados / Preparation, modification, characterization and application of catalysts aiming the degradation of organic pollutant compounds by advanced oxidation processes
Neste trabalho focou-se na preparação de materiais com aplicação em processos de tratamento de compostos orgânicos poluentes. Especificamente, buscou-se correlacionar as propriedades físicas e químicas dos materiais com as suas respostas catalíticas nos processos de fotocatálise heterogênea e de ozonização. Empregando-se o método de precipitaç�
Publicado em: 2010
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14. Avaliação do tratamento de lixiviado de aterro sanitário através de processo oxidativo avançado conjugado com sistema de separação por membranas
The landfill leachate is characterized by high recalcitrant organic matter concentration, ammonia and toxic compounds. This effluent can be an environmental problem due to its high pollutant potential when it is released without treatment. Studies reported in the literature showed that biological processes are not sufficient in meeting the discharge standard
Publicado em: 2010
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15. Treatment of wastewater containing chlorophenols by photo-Fenton advanced oxidation process. / Tratamento de efluentes aquosos contendo clorofenóis por meio de processo oxidativo avançado foto-Fenton.
In recent years, advanced oxidation processes (AOP) have emerged as potentially powerful methods to transforming organic pollutants into harmless substances. The present work aims to study the degradation of chlorophenols (2,4-dichlorophenol and pentachlorophenol) in aqueous solution by the photo-Fenton process. The experiments were conducted in a batch recy
Publicado em: 2009
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16. Oxidative aspects and phenol biotransformation in the microalga Minutocellus polymorphus / Aspectos oxidativos e de biotransformação do poluente fenol na microalga Minutocellus polymorphus
Minutocellus polymorphus is a cosmopolitan marine microalgae found in many areas. It is sensitive to several types of toxicants and therefore it was chosen to investigate the phenol biotransformation, as well as the oxidative stress induced by this pollutant. M. polymorphus exposed to phenol displays an increase in the enzymes superoxide dismutase (143.5±46
Publicado em: 2009
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17. Estudo da remoÃÃo e degradaÃÃo dos corantes Remazol Black B e Remazol Red RB 133%, e do fÃrmaco Ganciclovir, com aplicaÃÃo de Processos Oxidativos AvanÃados
The contamination of rivers, seas, lakes and oceans is one of the major problems of modern society, caused in large part by industrial activities. Textile processing, particularly generate great amounts of effluent characterized by a high organic load, strong color and toxic chemical compounds, which, depending on the dye, can also contain mutagenic, carcino
Publicado em: 2009
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18. Integração dos processos de eletrodiálise e de degradação fotoquímica para o tratamento de efluentes salinos contendo fenol. / Integration of electrodialysis and photochemical degradation process for the treatment of a saline wastewater containing phenol.
Chemical oxidation processes can be used to treat industrial wastewater containing non-biodegradable organic compounds. However, the presence of dissolved salts may inhibit or retard the treatment process. In this work, a coupled process is studied including a desalination step by electrodialysis (ED) associated with an advanced oxidation process (photo-Fent
Publicado em: 2009
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19. Fungi biodegradation of vinasse from industrial sugarcane processing / Biodegradação de vinhaça proveniente do processo industrial de cana-de-açúcar por fungos
Vinasse is a residue resulting from the production of alcohol after pulp fermentation and distillation of the wine, ensuing from 10 to 15 liters for each liter of ethanol produced. This high colored effluent is a by-product rich in nutrients, mainly organic matter, having a high pollutant potential when disposed in the environment. Lignolytic fungi can be ut
Publicado em: 2009
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20. Evaluation methodology of traffic impacts on historic preservation area / Metodologia de avaliação dos impactos dos transportes urbanos em áreas de preservação histórica
Historical preservation, nowadays, is a great challenge searching for the cultural identity in the cities. Property deterioration and degradation can be caused by a lot of factors, including the fast growth and development of the cities increase the traffic flow and in most of the cases request a widening of the road and, because of which buildings had to be
Publicado em: 2008
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21. CONCEPÇÃO, CONSTRUÇÃO E AVALIAÇÃO DE FOTORREATORES CATALISADOS NA DEGRADAÇÃO DE CARGA POLUENTE E AMOXICILINA EM EFLUENTE HOSPITALAR
The focus of this study was the application of advanced oxidation photoprocesses, heterogeneous photocatalysis and photo-Fenton, in the degradation of pollutant load and amoxicillin in wastewater from the University Hospital of Santa Maria (HUSM), evaluating the photoreactors performance in the degradation efficiency. In the hospital wastewater there is a wi
Publicado em: 2008
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22. Degradação fotoquímica de efluentes industriais contendo polipropileno e isoniazida
One of the main impacts to the environment is the water pollution, where the industrial sector is one of the main sources of this problem. In order to search for a solution, the industrial sector is looking forward to new technologies to treat its wastewaters with the goal to reuse the water in the own process. In this mode, the treatment presents a reductio
Publicado em: 2008
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23. Modification and immobilization of TiO2 aiming the degradation of organic pollutant compounds by heterogeneous photocatalysis process / Modificação e imobilização de TiO2 visando a degradação de compostos orgânicos poluentes via o processo de fotocatálise heterogênea
The main goal of this work was to find alternatives capable to promote an improvement in terms of applicability of the heterogeneous photocatalysis process, in order to make it feasible in large scale. The use of the photocatalyst TiO2 immobilized and also modificated with adsorbent materials was evaluated. The heterogeneous photocatalysis process, either us
Publicado em: 2007
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24. Preparation, characterization and aplication of anodes of nominal composition Ti/RuyTi(1-y-x)SnxO2 in the degradation electrochemical of chlorophenols / Preparação, caracterização e aplicação de ânodos de composição nominal Ti/RuyTi(1-y-x)SnxO2 na degradação eletroquímica de clorofenóis
In this work oxides electrodes of nominal composition Ti/RuyTi(1-y-x)SnxO2 were prepared by thermal decomposition (400 °C) by three different routes: Traditional Method using inorganic precursors dissolved in either Isopropanol (MT/ISO) or a solution of HCl 1:1 (v/v) (MT/HCl) and the Polymeric Precursors Method (MPP).Oxides coatings were characterized by Sc
Publicado em: 2007