Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/25080
Type: Artigo de periódico
Title: Electrolytic removal of metals using a flow-through cell with a reticulated vitreous carbon cathode
Author: Bertazzoli, Rodnei
Widner, Rosivânia C.
Lanza, Marcos R.V.
Di Iglia, Rosana A.
Sousa, Maria F.B.
Abstract: The aim of the present study was to establish an electrolytic method for the removal of metals from wastewater using a three dimensional, reticulated vitreous carbon cathode. During the development of the experimental set up, particular attention was paid to the electrolyte flow rate and to the cathode porosity. The electrolytic cell employed potential values in such a way that the metals reduction reaction occurred under mass transport control. These potentials were determined by hydrodynamic voltammetry on a vitreous carbon rotating disc electrode. The cell proved to be efficient in removing copper, zinc and lead and it was able to reduce the levels of these metals from 50 mg/L to 0.1 mg/L.
O objetivo do presente trabalho foi estabelecer um processo eletrolítico para remover metais de efluentes aquosos usando um catodo tridimensional de carbono vítreo reticulado. Durante o desenvolvimento do trabalho foi estudado a influência do fluxo do eletrólito e da porosidade do eletrodo. A célula eletrolítica utilizou potenciais tais que a reação de redução ocorreu sob controle de transporte de massa. A célula demonstrou eficiência na remoção de chumbo, zinco e cobre, reduzindo a concentração desses metais de 50 mg.L-1 a 0,1 mg.L-1 em 20 min de recirculação da solução.
Subject: electrolytic removal of metals
three dimensional electrodes
electrochemical reactors
Editor: Sociedade Brasileira de Química
Rights: aberto
Identifier DOI: 10.1590/S0103-50531997000500009
Address: http://dx.doi.org/10.1590/S0103-50531997000500009
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000500009
Date Issue: 1-Jan-1997
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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