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Enhanced simultaneous removal of MTBE and TCE mixture by Paracoccus sp. immobilized on waste silica gel
Xie F.; Lu Q.; de Toledo R.A.; Shim H.
2016-10
Source PublicationInternational Biodeterioration and Biodegradation
ISSN0964-8305
Volume114Pages:222-227
Abstract

Contamination of groundwater with the gasoline additive methyl tert-butyl ether (MTBE) is often accompanied by the coexistence of chlorinated aliphatic contaminants such as trichloroethylene (TCE). This study reports for the first time an indigenous Paracoccus sp. using MTBE as a sole carbon source while cometabolizing TCE from the mixture. The culture was originally enriched and isolated from the sludge sample at a regional wastewater treatment plant in Macau Special Administrative Region (SAR), China. Waste silica gel was used as a matrix for the microbial immobilization. The effects of different concentrations of MTBE and TCE on the removal efficiencies were investigated, together with their interactions during the bioremoval process, as well as the effects of pH and temperature on MTBE and TCE removal rates. The adsorption kinetics of contaminants on silica gel was also evaluated and the adsorption capacities of MTBE (50 mg l-1) and TCE (50 mg l-1) were 0.42 mg g and 0.65 mg g, respectively. In the immobilized system, TCE (20 mg l-1) was removed to non-detectable level while the highest removal efficiency for MTBE (40 mg l-1) was 70.2 ± 3.1%.

KeywordImmobilization Mixture Removal Mtbe Tce Waste Silica Gel
DOI10.1016/j.ibiod.2016.07.003
URLView the original
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology ; Environmental Sciences & Ecology
WOS SubjectBiotechnology & Applied Microbiology ; Environmental Sciences
WOS IDWOS:000383528000030
Fulltext Access
Citation statistics
Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorShim H.
AffiliationUniv Macau, Dept Civil & Environm Engn, Fac Sci & Technol, Ave Univ, Taipa, Macau, Peoples R China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Xie F.,Lu Q.,de Toledo R.A.,et al. Enhanced simultaneous removal of MTBE and TCE mixture by Paracoccus sp. immobilized on waste silica gel[J]. International Biodeterioration and Biodegradation,2016,114:222-227.
APA Xie F.,Lu Q.,de Toledo R.A.,&Shim H..(2016).Enhanced simultaneous removal of MTBE and TCE mixture by Paracoccus sp. immobilized on waste silica gel.International Biodeterioration and Biodegradation,114,222-227.
MLA Xie F.,et al."Enhanced simultaneous removal of MTBE and TCE mixture by Paracoccus sp. immobilized on waste silica gel".International Biodeterioration and Biodegradation 114(2016):222-227.
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