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Bioremediation of Mixed Wastes (BTEX, TPH, TCE, and cis -DCE) Contaminated Water
Junhui Li; Chengkeng Lei; Shanshan Dong; Hojae Shim
2011-07-01
Conference NameBIT’s 1st Annual World Congress of Petroleum Microbiology (WCP)
Source PublicationJOURNAL OF HAZARDOUS, TOXIC, AND RADIOACTIVE WASTE
Volume15
Issue3
Pages160-165
Conference DateJuly 25-27, 2010
Conference PlaceDalian, China
Abstract

Together with industrialization, more sites have become contaminated with mixed wastes of organics. Contamination of groundwater with benzene, toluene, ethylbenzene, and three isomers of xylene (BTEX) and chlorinated aliphatic hydrocarbons (CAHs) allows for the application of aerobic bioremediation to achieve mineralization of both types of compounds. In this study, the aerobic bioremoval of mixtures of these compounds [BTEX, BTEX/trichloroethylene (TCE), BTEX/cis-1,1-dichloroethylene (cis-DCE), BTEX/total petroleum hydrocarbons (TPH)/TCE, and toluene and ortho-xylene (ToX/TCE] was assessed under different environmental conditions (pH and temperature) by using indigenous microorganisms isolated from potentially contaminated regional sites. The highest TPH bioremoval efficiencies (<50%) occurred at 25°C and under neutral or alkaline conditions. TCE was cometabolized with toluene and o-xylene provided as growth substrates, and the highest bioremoval efficiency occurred at ToX/TCE, and pH and temperature impacted the mineralization of compounds. This study would help enhance the applicability of bioremediation technology to the mixed-wastes contaminated sites.

KeywordBioremoval Environmental Conditions Interactions Organic Contaminants Mixtures
DOIhttps://doi.org/10.1061/(ASCE)HZ.1944-8376.0000085
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Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
AffiliationDept. of Civil and Environmental Engineering, Univ. of Macau, Macau SAR, China
Recommended Citation
GB/T 7714
Junhui Li,Chengkeng Lei,Shanshan Dong,et al. Bioremediation of Mixed Wastes (BTEX, TPH, TCE, and cis -DCE) Contaminated Water[C],2011:160-165.
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