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http://repository.kln.ac.lk/handle/123456789/24067
Title: | Current density dependent removal of aqueous Cr(VI) by electrocoagulation |
Authors: | Chandima, D. S. Herath, A. M. C. |
Keywords: | Electrocoagulation, Batch-mode reactor, Al electrodes, Cr(VI) removal, Energy consumption |
Issue Date: | 2021 |
Publisher: | Faculty of Science, University of Kelaniya, Sri Lanka. |
Citation: | Chandima, D. S, Herath, A. M. C. ( 2021) Current density dependent removal of aqueous Cr(VI) by electrocoagulation, Proceedings of the International Conference on Applied and Pure Sciences (ICAPS 2021-Kelaniya)Volume 1,Faculty of Science, University of Kelaniya, Sri Lanka.Pag.174-180 |
Abstract: | Electrocoagulation (EC) is a proven green technology for the remediation of potentially toxic metalloids and metal ions contaminated water and waste water. The EC performance was carried out on a laboratory scale batch mode reactor using Al as anode and cathode for the removal of 5 ppm of Cr(VI) in synthetic water prepared with 150 ppm of Ca2+, 50 ppm of Mg2+ and 5 ppm of F− ions. The results showed that the removal efficiency of Cr(VI) increases with increasing both electrocoagulation time and the current density. At current densities, 4 mA/cm2, 2 mA/cm2 and 1 mA/cm2, removal efficiencies were 98%, 93% and 48% respectively after 140 minutes at initial pH of 6.0. Energy consumption of EC process was found to be 6.57 kWh/m3, 1.84 kW h/m3, and 0.56 kW h/m3 in the same order of decrease in current densities. The EC process gives promising results towards the removal of Cr(VI) at a low consumption of energy, making the process attainable and possible to scale up. |
URI: | http://repository.kln.ac.lk/handle/123456789/24067 |
ISSN: | 2815-0112 |
Appears in Collections: | ICAPS-2021 |
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