Preprint Article Version 1 This version is not peer-reviewed

Electrochemical Removal of Chromium (VI) from Wastewater

Version 1 : Received: 1 March 2019 / Approved: 4 March 2019 / Online: 4 March 2019 (13:30:34 CET)

A peer-reviewed article of this Preprint also exists.

Peng, H.; Leng, Y.; Guo, J. Electrochemical Removal of Chromium (VI) from Wastewater. Appl. Sci. 2019, 9, 1156. Peng, H.; Leng, Y.; Guo, J. Electrochemical Removal of Chromium (VI) from Wastewater. Appl. Sci. 2019, 9, 1156.

Journal reference: Appl. Sci. 2019, 9, 1156
DOI: 10.3390/app9061156

Abstract

Removal of hexavalent chromium had attracted much more attention as it was a hazardous contaminant. Electrochemical reduction technology was applied to removal chromium (VI) from wastewater. The mechanism and parameters affect the reduction process were investigated. The results showed that the reduction efficiency was significantly affected by the concentration of H2SO4, current density and reaction temperature. And the reduction efficiency was up to 86.45% at concentration of H2SO4 of 100g/L, reaction temperature of 70 ℃, current density at 50 A/m2, reaction time at 180 min and stirring rate of 500 rpm. The reduction process of chromium (VI) was followed pseudo-first-order equation, and the reduction rate could be expressed as Kobs = k [H2SO4]1• [j] 4•exp-4170/RT.

Subject Areas

Electrochemical; Chromium; Kinetic

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