Microbial processes influencing the transport, fate and groundwater impacts of fuel ethanol releases

Graphical abstract Highlights ► Ethanol could hinder BTEX attenuation by various biogeochemical mechanisms. ► O2 depletion, enzyme repression and metabolic flux dilution elongate BTEX plumes. ► Elongation is site-specific and is offset by fortuitous growth of BTEX degraders. ► Ethanol migrates throu...

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Veröffentlicht in:	Current opinion in biotechnology 2013-06, Vol.24 (3), p.457-466
Hauptverfasser:	Ma, Jie, Rixey, William G, Alvarez, Pedro JJ
Format:	Artikel
Sprache:	eng
Schlagworte:	Attenuation Benzene - metabolism Benzene Derivatives - metabolism biofuels Biofuels - adverse effects Biofuels - analysis Biotechnology Ethanol Ethanol - adverse effects Ethanol - analysis Ethanol - metabolism ethanol fuels Ethyl alcohol Explosions Fatty Acids - metabolism Fatty Acids - pharmacology Fuels Groundwater Groundwater - chemistry Internal Medicine Microbiology Microorganisms Motion Oxygen - analysis remediation risk assessment Strategy Toluene - metabolism transportation Volatilization Water Quality Xylenes - metabolism
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Zusammenfassung:	Graphical abstract Highlights ► Ethanol could hinder BTEX attenuation by various biogeochemical mechanisms. ► O2 depletion, enzyme repression and metabolic flux dilution elongate BTEX plumes. ► Elongation is site-specific and is offset by fortuitous growth of BTEX degraders. ► Ethanol migrates through the capillary fringe, a zone of high microbial activity. ► Ethanol-derived CH4 could pose an explosion risk and enhance BTEX vapor intrusion.
ISSN:	0958-1669 1879-0429
DOI:	10.1016/j.copbio.2012.09.005