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Electrocoagulation Studies on the Removal of Copper from Water Using Mild Steel Electrode

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This study provides an electrocoagulation process for the removal of copper from water using mild steel and stainless steel as anode and cathode, respectively. The effect of different operating parameters and coexisting ions on the removal efficiency of copper was investigated. The results showed that the optimum removal efficiency of 97.8% was achieved at a current density of 0.02 A/dm2 and a pH of 7.0. The adsorption of copper, preferably fitting the Langmuir adsorption isotherm, suggests monolayer coverage of adsorbed molecules. First- and second-order rate equations and Elovich and intraparticle diffusion models were applied to study adsorption kinetics. The adsorption process follows the second-order kinetics model with good correlation. Temperature studies showed that adsorption was endothermic and spontaneous in nature.

Keywords: adsorption kinetics; copper removal; electrocoagulation; isotherms

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143011X13225991083640

Publication date: March 1, 2012

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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