Decay Of Chlorine
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. CalibraÃÃo do coeficiente de decaimento do cloro (Kw) em redes de abastecimento de Ãgua utilizando o mÃtodo iterativo do gradiente hidrÃulico alternativo (MIGHA) / Calibration of the coefficient of decline of chlorine (Kw) in nets of water supply using the iterative method of the alternative hydraulical gradient (MIGHA)
Um dos maiores desafios das companhias brasileiras de saneamento à a disponibilizaÃÃo de Ãgua potÃvel dentro dos padrÃes de qualidade preconizados pela Portaria n 518/2004 do MinistÃrio da SaÃde. Para obtenÃÃo dessa qualidade, à prÃtica comum a utilizaÃÃo de cloro nas estaÃÃes de tratamento de Ãgua, porÃm, este participa de diversas reaÃ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2009
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2. Study of the oxidation 2,4-dchlorophenoxyacetic herbicide using thermal oxide electrodes / Estudo da oxidação do herbicida acido 2,4-diclorofenoxiacetico utlizando eletrodos de oxidos termicos
In this work the performance of different types of thermal oxide electrodes, which were the 70TiO2/30RuO2, 60Ta2O5/40IrO2 and b-PbO2 in the electro-oxidation of the herbicide 2,4- dichlorophenoxyacetic. A plate of platinum was used as auxiliary electrode, and the experiments were followed in water, pH 3.5, solution of potassium sulfate as electrolyte support
Publicado em: 2009
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3. Estudo dos parâmetros do decaimento do cloro residual em sistema de distribuição de água tratada considerando vazamento / Study of the residual decay parameters in water distribution systems with leakage
The use of chlorine as disinfectant in water supply systems has been a common practice adopted by the water industry. Introduced during the treatment process, chlorine participates in several reactions with compounds of organic and inorganic nature inside the pipes. Such reactions that occur in the bulk and the wall of the pipes are responsible for chlorine
Publicado em: 2008
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4. Calibração de modelo de decaimento de cloro aplicado a setor de rede de distribuição de água / Calibration of the chlorine decay model applied to a prototype water supply distribution network sector
O crescente adensamento populacional em grandes centros urbanos vem propiciando crescentes demandas hídricas. Esse fato aliado às limitações das fontes para abastecimento, tanto do ponto de vista quantitativo como qualitativo, impõe que políticas de gerenciamento da água sofram transformações no futuro próximo. Nesse sentido, devem merecer atençã
Publicado em: 2008
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5. Chlorine Dioxide for Reduction of Postharvest Pathogen Inoculum during Handling of Tree Fruits
Alternatives to hypochlorous acid and fungicides are needed for treatment of fruit and fruit-handling facilities. Chlorine dioxide was evaluated and found effective against common postharvest decay fungi and against filamentous fungi occurring on fruit packinghouse surfaces. In vitro tests with conidial or sporangiospore suspensions of Botrytis cinerea, Peni
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6. Reductive Dechlorination of the Nitrogen Heterocyclic Herbicide Picloram
The anaerobic biodegradation of picloram (3,5,6-trichloro-4-amino-2-pyridinecarboxylic acid) in freshwater sediment was favored under methanogenic conditions but not when sulfate or nitrate was available as a terminal electron acceptor. Under the former conditions, more than 85% of the parent substrate (340 μM) was removed from nonsterile incubations in 30
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7. Astrovirus survival in drinking water.
A method based on infection of CaCo-2 cultured cell monolayers (CC) and reverse transcription-PCR (RT-PCR) was developed for the specific detection of infectious astrovirus. The procedure was validated by titrating poliovirus stocks in parallel in CaCo-2 cells by determining the most probable number of cytopathogenic units and by cell culture and subsequent
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8. Rotavirus Virus-Like Particles as Surrogates in Environmental Persistence and Inactivation Studies
Virus-like particles (VLPs) with the full-length VP2 and VP6 rotavirus capsid proteins, produced in the baculovirus expression system, have been evaluated as surrogates of human rotavirus in different environmental scenarios. Green fluorescent protein-labeled VLPs (GFP-VLPs) and particles enclosing a heterologous RNA (pseudoviruses), whose stability may be m
American Society for Microbiology.
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9. Reductive dehalogenation of chlorinated benzenes and toluenes under methanogenic conditions.
The anaerobic metabolism of chlorinated benzenes and toluenes was evaluated in soil slurry microcosms under methanogenic conditions. A mixture of hexachlorobenzene, pentachlorobenzene, and 1,2,4-trichlorobenzene (TCB) in soil slurries was biotransformed through sequential reductive dechlorination to chlorobenzene (CB). The metabolic pathway for hexachloroben