Remediation of hexachlorobenzene in soil by enhanced electrokinetic Fenton process

Abstract

The feasibility of enhanced electrokinetic Fenton process for the remediation of Hexachlorobenzene (HCB) in low permeability soil was investigated. Kaolin was artificially contaminated with HCB and treated by electrokinetic and electrokinetic Fenton processes. β -Cyclodextrin was used to enhance the solubility of HCB in pore fluid. Three tests were carried out, of which two were electrokinetic experiments to observe the suitability of β -cyclodextrin as a flushing solution for these processes. The third experiment was the electrokinetic Fenton test using β -cyclodextrin as an enhancing agent. Results show that the removal efficiency depends on the choice of a suitable flushing solution and physical parameters like pH, electric current and electro-osmotic flow.

Keywords:

• Soil remediation
• electrokinetics
• Fenton process
• hexachlorobenzene
• cyclodextrin

Acknowledgment

The authors would like to thank TEKES for financially assisting the project.