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Removal of nickel, copper, zinc and chromium from synthetic and industrial wastewater by electrocoagulation

Konstantinos Dermentzis, Achilleas Christoforidis

2010enelectrocoagulationheavy metalswastewaterenvironment

Abstract

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This research investigates the efficacy of electrocoagulation using aluminum electrodes for the simultaneous removal of nickel, copper, zinc, and chromium from synthetic aqueous solutions and actual electroplating wastewater. The study examines various parameters affecting the electrocoagulation process, including initial pH, current density, metal ion concentration, chemical oxygen demand (COD), and contact time. Optimal metal removal was achieved within a pH range of 4-8, with complete removal of nickel, copper, and zinc occurring in 20, 40, and 50 minutes respectively. Chromium removal required longer periods of 40, 60, and 80 minutes. It was found that increased current density enhanced the process efficiency; however, this came at the expense of higher energy consumption. The best results were obtained at a current density of 40 mA/cm². Notably, the electrocoagulation process effectively treated an electroplating wastewater sample, significantly reducing metal concentrations and COD to within acceptable limits in a 60-minute period. Thus, electrocoagulation emerges as a reliable, safe, and cost-effective method for removing heavy metals and COD from water and wastewater.

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Cite This Work

@article{71ad15e4-0d87-44a9-9974-6d41b9df7419,
  title={Removal of nickel, copper, zinc and chromium from synthetic and industrial wastewater by electrocoagulation},
  author={Konstantinos Dermentzis and Achilleas Christoforidis},
  year={2010},
  language={en}
}
TY  - JOUR
TI  - Removal of nickel, copper, zinc and chromium from synthetic and industrial wastewater by electrocoagulation
AU  - Konstantinos Dermentzis
AU  - Achilleas Christoforidis
PY  - 2010
LA  - en
ER  -

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