Forschungsdaten – Titel und Zusammenfassungen von Publikationen, extrahierte Daten und Katalogeinträge – erscheinen in ihrer Originalsprache Englisch.
Yi Zheng, Huifeng Shan, Song Jin, Qinghong Wang +6
Noch keine extrahierten Parameter – fordern Sie eine KI-Extraktion an, um diese Publikation mit den Literaturverteilungen zu vergleichen.
Dieser Publikation ist noch kein 3D-Modell zugeordnet. Die Parameterbereiche oben ordnen die berichteten Werte trotzdem in die Literaturverteilung ein.
Noch keine Ergebniskennzahlen extrahiert.
Methyl tert-butyl ether (MTBE) is commonly found in groundwater due to leaking underground storage tanks. This study focuses on MTBE-contaminated groundwater with a long history at a fuel station in Beijing, China, where previous remediation was unsuccessful. This work field-tested a novel bioelectrochemical system (BES) and showcases a “microbial electrochemical snorkel” (MES) mechanism for enhanced in situ biodegradation of MTBE in groundwater. Data from this field study revealed that MTBE, with starting concentrations ranging from 8.9 μg/L to 41,900 μg/L, was effectively biodegraded (up to 97.4 %) in an anaerobic environment within six months. Enhanced biodegradation of petroleum hydrocarbon compounds and the generation of MTBE biodegradation intermediates were also observed. Data of the electrical parameters demonstrated the correlation of BES systems. Redundancy analysis (RDA) showed that BES shifted microbial communities from contaminant-positive correlations to degradation/product-positive correlations. Gene expression analysis indicated that BES enhanced metabolic pathways for biodegradation and upregulated the expression of specific monooxygenases in anaerobic groundwater. These findings demonstrate a robust aerobic-like biodegradation in the anaerobic matrix when the MES mechanism establishes an alternative electron transfer pathway, which facilitates a robust biodegradation of MTBE that would have been otherwise sluggish in an anaerobic matrix like in this study. This work sheds light on a novel passive-active remedy for treating sites with long contamination history and unfavorable geochemical conditions for natural attenuation. • High-performance bioelectrochemical system (BES) for in situ degradation of MTBE. • Pilot demonstration of BES for groundwater remediation at operating fuel stations. • Bioelectrochemical systems induce hydrogeochemical changes of groundwater. • Shifts in metagenomics profiles during BES -enhanced MTBE biodegradation.