Removal of Cr 3+ by electrocoagulation from simulated wastewater

Mongolian Journal of Chemistry

J Oyuntsetseg¹  A Tsiiregzen¹  R Ulambayar¹  D Bayaraa² 

[1] Institute of Chemistry and Chemical Technology, MAS, Peace ave., Ulaanbaatar;Mongolian National University of Education, Ulaanbaatar;

关键词: Electrocoagulation;    current density;    trivalent chromium;    wastewater;   

DOI  :  10.5564/mjc.v15i0.330

来源: DOAJ

【 摘 要 】

Trivalent chromium (Cr³⁺⁾ removal from aqueous solution  by electrocoagulation using iron electrodes material was investigated in this paper. Effects of current density, initial concentration of Cr ³⁺, operating time,  pH, electrode distance, and operating cost have been investigated. At higher current density and solution pH, remarkable removal of Cr³⁺ was observed. Experiments have been show that the maximum removal percentage of the Cr³⁺ 99.89 % was at initial concentration 1000mg/L,  current density 9.34mA/cm² and reaction time 1 hours. Energy consumption was calculated  for Cr³⁺ removal at different time. The method is observed to be very effective in the removal Cr³⁺ ion from aqueous solution. Electrocoagulation process need simple equipment, designable any size, use any chemical substances and low operating cost.

DOI: http://doi.dx.org/10.5564/mjc.v15i0.330

Mongolian Journal of Chemistry 15 (41), 2014, p89-93

【 授权许可】

Unknown