Issue 104, 2014

Extended petroleum hydrocarbon bioremediation in saline soil using Pt-free multianodes microbial fuel cells

Abstract

Bioelectrochemical remediation is an emerging technology for in situ removal of petroleum hydrocarbons in soil. Here we demonstrated that the remediation can be extended to a larger range by adding multilayer anodes in contaminated soils. Using a three anodes system with activated carbon as the cathodic catalyst, 918 C of charge transferred during 180 days in aged saline soil. The degradation of both polycyclic aromatic hydrocarbons (PAHs) and n-alkanes were accelerated in each layer compared to the disconnected control. The net degradation rates of total petroleum hydrocarbons, 16 priority PAHs and total n-alkanes (C8–C40) were 18%, 36% and 29%, respectively. Popular exoelectrogens (such as Geobacteraceae sp.) and Escherichia were identified, which possibly played an important role in this bioelectrochemical process.

Graphical abstract: Extended petroleum hydrocarbon bioremediation in saline soil using Pt-free multianodes microbial fuel cells

Supplementary files

Article information

Article type
Paper
Submitted
18 Sep 2014
Accepted
31 Oct 2014
First published
03 Nov 2014

RSC Adv., 2014,4, 59803-59808

Author version available

Extended petroleum hydrocarbon bioremediation in saline soil using Pt-free multianodes microbial fuel cells

X. Li, X. Wang, Y. Zhang, L. Cheng, J. Liu, F. Li, B. Gao and Q. Zhou, RSC Adv., 2014, 4, 59803 DOI: 10.1039/C4RA10673C

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