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Enhanced biodegradation of aged petroleum hydrocarbons in soils by glucose addition in microbial fuel cells
- Source :
- Journal of Chemical Technology & Biotechnology. 91:267-275
- Publication Year :
- 2015
- Publisher :
- Wiley, 2015.
-
Abstract
- BACKGROUND: Bioelectrochemical remediation of soils contaminated by petroleum hydrocarbons has received increasing attention as an effective approach to remove pollution with simultaneous electricity generation. RESULTS: Here, glucose was added as a co-substrate in this system. The charge output of soil microbial fuel cells (MFCs) was enhanced by 262%, and the total petroleum hydrocarbon degradation rate increased by 200%. According to the increased dehydrogenase and polyphenol oxidase activities, the exogenetic glucose substantially activated hydrocarbon degradation bacteria (such as Alcanivorax). The Shannon–Wiener Index and richness of soil microbial community decreased after glucose addition, indicating that a selective enrichment of specific communities was imposed by glucose. Correlation analysis showed the biodiversity in soil far from the cathode was mainly determined by the concentration of petroleum hydrocarbons, while that in soil close to the cathode was dominated by the current. CONCLUSION: This study demonstrated that an exogenetic carbon source enhanced the bioelectrochemically assisted degradation of aged petroleum hydrocarbons in saline soils, providing an effective approach to remove contaminations from soil in barren areas or extreme environments. © 2015 Society of Chemical Industry Supporting information may be found in the online version of this article.
- Subjects :
- Microbial fuel cell
Environmental remediation
General Chemical Engineering
0211 other engineering and technologies
02 engineering and technology
010501 environmental sciences
complex mixtures
01 natural sciences
Inorganic Chemistry
chemistry.chemical_compound
Waste Management and Disposal
0105 earth and related environmental sciences
021110 strategic, defence & security studies
biology
Renewable Energy, Sustainability and the Environment
Chemistry
Organic Chemistry
Environmental engineering
Soil classification
Biodegradation
biology.organism_classification
Pollution
Soil contamination
Fuel Technology
Environmental chemistry
Soil water
Total petroleum hydrocarbon
Alcanivorax
Biotechnology
Subjects
Details
- ISSN :
- 02682575
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Technology & Biotechnology
- Accession number :
- edsair.doi...........c91c52bd0941d1e1db892c245585c8fa