Electrodialysis
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. PHYTOREMEDIATION OF FLUORIDE-CONTAMINATED WATER BY Landoltia punctata
ABSTRACT Fluorine is released into the water environment naturally or by anthropogenic activities. Fluorine promotes health benefits at low concentrations, but it promotes adverse effects ranging from fluorosis to carcinogenic problems at high concentrations. Although fluorine removal from environment can occur through processes such as adsorption, reverse o
Eng. Agríc.. Publicado em: 2021-04
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2. FIXAÇÃO DE CO2 EM EFLUENTE SALINO DE INDÚSTRIA PETROQUÍMICA
In various industrial processes, such as the process of obtaining potassium by solution mining or in the oil industry, fuels are burnt concurrently to the formation of saline effluents. The opportunity to sequester carbon through capturing the CO2 from the flue gas by carbonation of these effluents and reducing the potential of scaling of the water is eviden
Quím. Nova. Publicado em: 2017-08
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3. Aplicação da técnica de eletrodiálise no tratamento de efluentes de tingimento de gemas contendo íons nitrato e cromo
The dyeing agate employs large quantities of potentially harmful wastewater to the environment, such as, effluent with chromium and nitrate ions. The aim of the present study was investigate the electrodialysis technique efficiency in the removal of contaminant ions present in wastewater generated by the agate dyeing industry and evaluate the toxicity of the
Quím. Nova. Publicado em: 2016-12
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4. CURRENT-VOLTAGE CURVES FOR TREATING EFFLUENT CONTAINING HEDP: DETERMINATION OF THE LIMITING CURRENT
Abstract Membrane separation techniques have been explored for treating industrial effluents to allow water reuse and component recovery. In an electrodialysis system, concentration polarization causes undesirable alterations in the ionic transportation mechanism. The graphic construction of the current voltage curve is proposed for establishing the value of
Braz. J. Chem. Eng.. Publicado em: 2015-12
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5. Removal of lactobionic acid by electrodialysis
Lactobionic acid has a number of applications, such as in cosmetic formulations and detergents, as well as in the medical field, where it is used for the preservation of organs destined for transplantation. Previous studies have reported that a promising alternative procedure for the production of lactobionic acid is the biotechnological route, using permeab
Braz. J. Chem. Eng.. Publicado em: 2014-12
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6. Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study
The study of conducting polymeric membranes is decisive in some areas, as in fuel cells and electrodialysis. This work aims the study of membranes using conventional and conductive polymers blends. Two types of polyurethane were used as conventional polymers, commercial thermoplastic polyurethane and polyurethane synthesized from castor oil and 4-4-dicyclohe
Mat. Res.. Publicado em: 10/05/2013
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7. Avaliação do processo de eletrodiálise reversa no tratamento de efluentes de refinaria de petróleo
Este trabalho teve como objetivo avaliar a aplicação da eletrodiálise reversa no tratamento de efluente final de refinaria para reuso em sistema de resfriamento. O estudo foi conduzido nas instalações da Refinaria Gabriel Passos (REGAP)- MG, com efluente real, proveniente da saída da Estação de Tratamento de Despejos Industriais (E.T.D.I.), e utiliza
Publicado em: 2011
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8. Modeling electrodialysis and a photochemical process for their integration in saline wastewater treatment
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 study, wastewater desalination by electrodialysis (ED) associated with an advanced oxidation process (photo-Fenton) was applied to an aqueous NaCl solution
Brazilian Journal of Chemical Engineering. Publicado em: 2010-09
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9. Recovery and reuse of hexavalent chromium from aqueous solutions by a hybrid technique of electrodialysis and ion exchange
The chrome plating industry is one of the highly polluting industries whose effluent mainly consists of chromium(VI). This compound is highly toxic to aquatic life and human health. The rinse water constituents reflect the chrome plating bath characteristics; generally dead tank wash water contains about 1% of the plating bath concentration. Other metals and
Brazilian Journal of Chemical Engineering. Publicado em: 2010-03
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10. Removal of cadmium and cyanide from aqueous solutions through electrodialysis
A descarga de efluentes contendo metais pesados e cianeto pelas indústrias de galvanoplastia é uma das maiores fontes de poluição dos recursos hídricos. O emprego da técnica de eletrodiálise para o tratamento de um efluente sintético contendo aproximadamente 0,0089 mol L-1 de cádmio e 0,081 mol L-1 de cianeto foi estudado utilizando uma célula de e
Publicado em: 2010
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11. Evaluation of the electrodialysis process for the treatment of metal finishing wastewater
Neste trabalho estudou-se o tratamento, por eletrodiálise, de um efluente alcalino, oriundo de um processo de galvanoplastia, contendo íons de Zn, Ni, Cu, Fe e Al, bem como de Na e CN-. O estudo foi feito tanto em células de bancada quanto em uma planta piloto, utilizando-se membranas íonseletivas Nafion e Selemion. Os resultados mostraram que os íons m
Publicado em: 2010
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12. Montagem e caracterização de unidade de eletrodiálise em escala de laboratório para tratamento de soluções salinas. / Assembly and characterization of unit electrodialysis in laboratory scale for treatment of saline solutions.
A escassez de água nos grandes centros urbanos deve se agravar nos próximos anos. Novas fontes de água são necessárias para suprir a demanda. Nas cidades não há disponibilidade de terrenos para construção de estações de tratamento de águas e esgotos convencionais. Por isso, são necessários novos processos de tratamento. Processos de separação
Publicado em: 2010