Removal of Cr 3+ by electrocoagulation from simulated wastewater

Authors

  • R Ulambayar Institute of Chemistry and Chemical Technology, MAS, Peace ave., Ulaanbaatar
  • J Oyuntsetseg Institute of Chemistry and Chemical Technology, MAS, Peace ave., Ulaanbaatar
  • A Tsiiregzen Institute of Chemistry and Chemical Technology, MAS, Peace ave., Ulaanbaatar
  • D Bayaraa Mongolian National University of Education, Ulaanbaatar

DOI:

https://doi.org/10.5564/mjc.v15i0.330

Keywords:

Electrocoagulation, current density, trivalent chromium, wastewater

Abstract

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

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Published

2014-12-12

How to Cite

Ulambayar, R., Oyuntsetseg, J., Tsiiregzen, A., & Bayaraa, D. (2014). Removal of Cr 3+ by electrocoagulation from simulated wastewater. Mongolian Journal of Chemistry, 15, 89–93. https://doi.org/10.5564/mjc.v15i0.330

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