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Type: Artigo de periódico
Title: Electrolytic removal of lead using a flow-through cell with a reticulated vitreous carbon cathode
Author: Widner, RC
Sousa, MFB
Bertazzoli, R
Abstract: The aim of this work was to establish an electrolytic method for the removal of lead from wastewater using a three-dimensional, reticulated vitreous carbon cathode. During the development of the experimental setup, 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 lead reduction reaction occurred under mass transport control. The potentials were determined by hydrodynamic voltammetry using a borate/nitrate solution as the supporting electrolyte on a viterous carbon rotating disc electrode. The cell proved to be efficient in removing lead and was able to reduce the levels of this metal to 0.1 mg dm(-3) in 20 min of recirculation, using the ratio catholyte volume/cathode volume equal to 0.027. The best configuration for this removal was a cathode porosity of 80 ppi and a solution flow rate of 240 dm(3)h(-1).
Subject: effluent lead removal
electrolytic cell fN metal removal
reticulated vitreous carbon (RVC)
flow-through cell
Country: Holanda
Editor: Kluwer Academic Publ
Citation: Journal Of Applied Electrochemistry. Kluwer Academic Publ, v. 28, n. 2, n. 201, n. 207, 1998.
Rights: fechado
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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