Advanced Photo Fenton
Mostrando 25-34 de 34 artigos, teses e dissertações.
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25. Conjugação de processos fisico-quimicos ( UV;H2O2; UV/H2O2; reagente de fenton; foto-fenton) e biologico (lodos ativados) para tratamento de aguas residuarias contendo formol / Combined physical-chemistry (UV; H2O2; UV/H2O2; reagent of fenton; photo-Fenton) and biological (activated sludge) process for treatment of contaminated wastewater by formaldehyde
In this work assays of treatment of solutions had been carried through and effluent I contend formaldehyde conjugating processes physicist-chemistries with biological. Amongst the some processes, the UV/H2O2 was what it presented the best efficiency in the treatment of the effluent one of the "Laboratorio de Anatomia/IB-UNICAMP. The reduction of the values o
Publicado em: 2007
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26. Photochemical degradation study of aqueous solutions of polyrthyleneglicol, polyacrylamide and polyvinylpyrrolidone. / Estudo da degradação fotoquímica de soluções aquosas de polietilenoglicol, poliacrilamida e polivinilpirrolidona.
The aim of this work is to apply advanced oxidative processes to study the degradation of industrial wastewater containing water-soluble polymers. Kinetic constants of reactions involved in the oxidation processes were calculated by molecular modeling. In the experimental part the degradation of polyvinylpirrolidone (PVP), polyacrylamide (PAM) and polyethyle
Publicado em: 2007
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27. Electrochemical control of aqueous solution pesticide: study for the degradation of 2,4-dichlorophenoxyacetic acid / Controle eletroquimico de herbicida em soluções aquosas : estudo da degradação do acido 2,4-diclorofenoxiacetico
In this work, the performance of the H2O2 electrogeneration process from O2 reduction on a reticulated vitreous carbon cathode was investigated. The process was also use for the oxidation of the herbicide 2,4-dichlorophenoxyacetic acid. Firstly, cyclic voltammetries were used for the identification of possible reduction reactions of the herbicide. The suppor
Publicado em: 2006
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28. TRATAMENTO DE EFLUENTE DA PRODUÇÃO DE TRIFLURALINA POR OXIDAÇÃO-COAGULAÇÃO COM FERRATO DE POTÁSSIO E PROCESSOS FENTON COMBINADOS
The so called amination water (AW), an effluent stream from the industrial production of the trifluraline herbicide, toxic and recalcitrant to conventional treatments such as the microbiological, was submitted to a combined advanced process. For the degradation study of this effluent a recent, promising alternative was chosen - the potassium ferrate (K2FeO4)
Publicado em: 2006
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29. Caracterization and oxidation of organic compounds in wastewater from wet processing of coffee berries. / CaracterizaÃÃo e oxidaÃÃo de compostos orgÃnicos nas Ãguas residuÃrias da despolpa Ãmida dos frutos do cafeeiro.
The wet processing of coffee berry is one of the most pollutant activities in brazilian agriculture. The main disadvantage of this method is the large volume of water used, wich returns to the environment with low quality. The goal of this work was to study the organic composition of the wastewater, as well as to prepare and test catalysts in order to oxidiz
Publicado em: 2006
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30. Degradação de BTXs via processos oxidativos avançados
In this study the efficiency of advanced oxidative processes (AOPs) were investigated toward the degradation of aqueous solutions containing benzene, toluene and xylenes (BTX). The results indicated that BTX can be effectively oxidized by the UV-A-assisted photo-Fenton process. The treatment permits almost total degradation of BTX and removal of more than 80
Química Nova. Publicado em: 2005-02
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31. Uso de processos oxidativos avançados e ferro elementar na remediação de agua subterranea contendo compostos organoclorados / Use of advanced oxidation process and zero valent ironinremediation of groundwater containing chlorinated compounds
The remediation of groundwater containing organochlorine compounds was evaluated in this work using UV (photolysis), Fenton (H2O2/Fe) and photo-Fenton (UV/H2O2/Fe). A reductive system using zero valent iron aiming the reductive dehalogenation of the compounds has also been tested. All the experiments were performed using an upflow reactor operating in a reci
Publicado em: 2005
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32. RemediaÃÃo de solos contaminados por derivados de petrÃleo utilizando processo foto-fenton
In the manipulation of petroleum derivatives may occur the contamination of soil, because of leaks, spills and other accidents during the exploration, refining, transport and storage. Those accidents have been increasing in the last years due to the growing demand of energy of the country. Many of these pollutants are highly impactants for man and environmen
Publicado em: 2005
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33. Desenvolvimento de um reator fotoquímico aplicável no tratamento de efluentes fenólicos presentes na indústria do petróleo / Development of a photochemistry reactor applicable in the treatment of phenolic wastewaters present in the petroleum industry
Com o crescente aumento da poluição das águas acorrido nos últimos anos, houve também um grande avanço das pesquisas relacionadas ao tratamento de águas contaminadas. Efluentes contendo compostos orgânicos de alta toxicidade, nos quais o tratamento biológico não pode ser aplicado, os chamados processos oxidativos avançados (POA) surgem como uma al
Publicado em: 2005
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34. NONYLPHENOL POLYETHOXYLATE AND TEXTILE WASTEWATER DEGRADATION BY ELECTROCOAGULATION AND FENTON PROCESSES / DEGRADAÇÃO DE NONILFENOL POLIETOXILADO E DE EFLUENTE TÊXTIL POR MEIO DE ELETROCOAGULAÇÃO E PROCESSOS FENTON
Nonylphenol polyethoxylates are nonionic surfactants widely employed on textile industry. Submitted to inadequate effluent treatment processes, these compounds can be eventually biodegraded to metabolites with estrogenic activity. Therefore, efficient processes on increasing the biodegradability or for the removal of these metabolites became necessary. In th
Publicado em: 2004