Advanced Photo Fenton
Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Tratamento de efluentes da indústria de processamento de carnes utilizando flotação por ar dissolvido e processos de oxidação avançada
The use of wastewater treatment processes with high efficiency of organic matter removal is considered one of the most important steps to achieve lower pollution loads in meat processing industries. As a primary treatment, dissolved air flotation processes (DAF) using coagulation-flocculation are generally applied. Additionally, the utilization of high effic
Publicado em: 2009
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14. Experimental study and mathematical modeling of hybrid solar reactor for phenol degradationby photo-Fenton process. / Estudo experimental e modelagem matemática de reator solar híbrido para degradação de fenol em solução aquosa pelo processo foto-Fenton.
Wastewaters containing hazardous, or recalcitrant organic substances are generated in a wide variety of industrial processes. The inadequate management of these effluents can cause contamination of underground and surface water. Their treatment by conventional processes may not be technically efficient, and usually prevents effluents from being discarded or
Publicado em: 2009
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15. 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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16. RemoÃÃo do corante remazol amarelo ouro RNL 150% por fotocatÃlise homogÃnea
A indÃstria tÃxtil tem utilizado corantes que ao entrarem no meio aquÃtico comprometem a estÃtica das Ãguas e impedem a fotossÃntese, comprometendo os processos hidroquÃmicos. No contexto do tratamento dos efluentes indÃstriais, destacam-se os Processos Oxidativos AvanÃados (POAs) que apresentam alta eficiÃncia na degradaÃÃo de inÃmeros composto
Publicado em: 2009
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17. Decolorization and removal of cod and bodfrom raw and biotreated textile dye bath effluent through advanced oxidation processes (AOPS)
In this paper, a comparative study of the treatment of raw and biotreated (upflow anaerobic sludge blanket, UASB) textile dye bath effluent using advanced oxidation processes (AOPs) is presented. The AOPs applied on raw and biotreated textile dye bath effluent, after characterization in terms of COD, colour, BOD and pH, were ozone, UV, UV/H2O2 and photo-Fent
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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18. 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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19. Fotodegradação de polímeros solúveis em água e moléculas modelo via processos oxidativos avançados / Photodegradation of water soluble polymers and model molecules via advanced oxidative processes
The aim of this work was to investigate polymer photodegradation mechanisms and stabilizing agents. The course of photooxidative degradation of some water soluble polymers (poly(vinylpyrrolidone), PVP; poly(acrylamide), PAM and poly(ethylene glycol), PEG) in the presence of hydrogen peroxide, Fenton reagent and iron salt has been investigated. PVP showed the
Publicado em: 2008
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20. Evaluation of oxidative processes for the environmentally apropriate treatment of cutting fluids / Avaliação de processos oxidativos para o tratamento ambientalmente adequado de fluidos de corte
Durante o processo metalúrgico de usinagem de uma peça ocorre a geração de calor proveniente do atrito ferramenta/peça e cavaco/ferramenta. Para que ocorra uma menor geração de calor possibilitando o manuseio, bem como a minimização na deformação da peça, utilizam-se fluidos, que são soluções lubrificantes à base de óleos, água ou polímero
Publicado em: 2008
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21. Integração entre os processos foto Fenton e lodo ativado no tratamento de efluentes contendo compostos orgânicos recalcitrantes. / Integration of photo-Fenton and activated sludge processes on the treatment of wastewater containing recalcitrant organic compounds.
O Fenol e compostos fenolicos foram classificados como poluentes primarios pela Environmental Protection Agency (EPA USA). Eles sao geralmente encontrados em efluentes industriais como: poupa e papel; madeireiras; plasticos e polimeros sinteticos; farmaceuticos, pesticidas, oleo e petroquimicas. Os tratamentos de agua convencionais tem mostrado ineficiencia
Publicado em: 2008
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22. Estudo da degradação dos antibióticos beta-lactâmicos amoxicilina e ampicilina e avaliação da toxicidade e biodegradabilidade dos seus produtos / Degradation of the pharmaceuticals amoxicillin and ampicillin and evaluation of toxicity and biodegradability of derived-products.
The presence of active pharmaceutical substances and personal-care products in aquatic environment has been a great concern for the scientific community. Pharmaceutical industries are one of the main sources of these types of compounds, which are characterized by low degradability and high toxicity. The antibiotic preparation may negatively affect living org
Publicado em: 2008
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23. 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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24. Advanced oxidative process for treating the effluents from the bleached kraft cellulose industry / Processos oxidativos avançados para tratamento de efluentes de indústria de celulose kraft branqueada
In this work, the processes photo-Fenton, H2O2/UV, TiO2/UV and H2O2/TiO2/UV were compared and optimized in order to obtain organic matter removals from the effluents of the bleached kraft cellulose industry. Those processes were applied before and after the biological treatment of the effluents. Initially, the best pH conditions for application of the proces
Publicado em: 2007