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Phosphorous removal in batch systems using ferric chloride in the presence of activated sludges
(Elsevier Science, 2010-05-11)
The objectives of this work were: (a) to analyze the effect of alkalinity, pH and initial Fe:P molar ratio (Fe0:P0) on the precipitation of orthophosphate using ferric chloride in the presence of activated sludge in order ...
Effect of operating conditions on the chemical phosphorus removal using ferric chloride by evaluating orthophosphate precipitation and sedimentation of formed precipitates in batch and continuous systems
(Elsevier Science, 2012-10-15)
Chemical phosphate removal by Fe(III) involves the precipitation of ferric phosphate and subsequent sedimentation of Fe-P particles. Physical-chemical factors that affect the phosphorus (P) precipitation are well known; ...
Avaliação quantitativa do tratamento da água utilizando os coagulantes tanino e cloreto férrico
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia ambientalUTFPR, 2019-07-03)
In order to make raw water suitable for human consumption, a conventional process that takes place inside water treatment plants is started. Inorganic coagulants of chemical origin, made up of iron and aluminum salts, such ...
Performance and biological indicators of a laboratory-scale activated sludge reactor with phosphate simultaneous precipitation as affected by ferric chloride addition
(Elsevier Science SA, 2010-12)
Iron-base coagulants are widely used for the phosphorous removal from wastewaters. Coagulants may be applied on the secondary treatment (simultaneous precipitation); however, coagulant excess may alter the biological ...
Eficiência da ação do coagulante sulfato de alumínio e cloreto férrico no tratamento de efluente têxtil
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia AmbientalUTFPR, 2021-05-07)
The relevance of the textile industry in the country and in the world is big, since it is a sector that grows and develops more and more over the years. It is responsible for a large part of the world’s water pollution, ...
Review of coagulation technology for removal of arsenic: Case of Chile
(I C D D R B-CENTRE HEALTH POPULATION RESEARCH, 2006-09)
Coagulation technology has been used since 1970 in northern Chile for removing arsenic from drinking-water. This experience suggests that coagulation is an effective technology for the removal of arsenic. It is currently ...
Evaluation use of an organic based polymer to replace the inorganic coagulant in slaughterhouse wastewater treatment
(Universidade Tecnológica Federal do Paraná (UTFPR), 2020)
Análise da aplicação do polímero de fécula de mandioca como floculante auxiliar do cloreto férrico no tratamento de água por sedimentação
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Química, 2019-06-12)
The present work has as main objective to evaluate the use of the cassava starch polymer (PFM) as an auxiliary flocculent of the ferric chloride (CF) to reduce water turbidity by means of coagulation / flocculation treatment ...
Determinação de condições ótimas de coagulação e mistura rápida para água da Lagoa do Jiqui/RN
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Química, 2018-11-29)
The water demand for human consumption increases whereas the quality of water bodies deteriorates due to human action and climate change. Water treatment plants must produce drinking water in accordance with the standards ...
Síntese de compostos heterocíclicos nitrogenados via reações de ciclização promovidas por espécies eletrofílicas de organocalcogênios: síntese de derivados de azaespiros e pirroloquinolinas
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2021-07-28)
In the present work, a synthetic route was developed for the preparation of 3- (organochalcogenyl)-azaespiro. The methodology developed involves an ipso cyclization reaction of arylpropynyl amides 1 in the presence of ...