Enhanced Electrokinetic Remediation of Zinc Contaminated Soil by Changeover of Composite Electrolyte

Article type: Research Article

Authors: Amipara, Brijesh | Galgale, Arti D.^{; *} | Shah, Nirav G.

Affiliations: Civil Engineering Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Baroda - 390001, India

Correspondence: [*] Corresponding Author. [email protected]

Abstract: The combination of electrolytes 0.1 M potassium chloride (KCl) and 0.1 M citric acid (CA) was investigated in a bench scale reactor for removal of zinc (Zn) from soil using electrokinetic remediation (EKR). The study was conducted over a period of 144 hours for different experimental set-ups. When KCl was used as a single electrolyte, 49.38 % removal of zinc was obtained with the changeover of electrolyte at every 24 hours, as compared to 12.5 %, when the reactor was operated as batch reactor without changeover. The use of composite electrolyte in cathode compartment and single electrolyte in anode compartment showed 79.06 % removal, whereas the use of composite electrolyte in both anode and cathode compartment gave 21.74 % removal.

Keywords: Electrokinetic remediation, composite electrolyte, removal of zinc

DOI: 10.3233/AJW210019

Journal: Asian Journal of Water, Environment and Pollution, vol. 18, no. 2, pp. 59-65, 2021