Enhanced electrokinetic remediation of quinoline-contaminated soils

ABSTRACT

The aim of this investigation was to examine the ability of enhanced electrokinetic (EK) remediation to efficiently remove quinoline from contaminated kaolinite soils. In order to accomplish this, the effect of a voltage gradient and anode buffer concentration on migration of quinoline in kaolinite was determined. The results showed that EK transport process effectively stimulated desorption and movement of quinoline in kaolinite. The rate and distance of migration rose with increasing voltage gradient and anode buffer concentration under certain conditions. The mechanisms that drive quinoline migration by electrodynamic processes were established as attributed to either electromigration or electroosmosis, and both played key roles in driving quinoline to migrate towards the cathode.

KEYWORDS:

• Quinoline
• electrokinetics
• electromigration
• electroosmosis
• soil

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 41201306], [grant number 41571306].