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Multivariate optimization for the simultaneous bioremoval of BTEX and chlorinated aliphatic hydrocarbons by Pseudomonas plecoglossicida
Li, Junhui1,2,3,4; de Toledo, Renata Alves2; Shim, Hojae2
2017-01-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume321Pages:238-246
Abstract

This study aimed to evaluate the effects of some major parameters on the cometabolic removal of cis-1,2-dichloroethylene (cis-DCE) and trichloroethylene (TCE), mixed with benzene, toluene, ethylbenzene, and xylenes, by an indigenous bacterial isolate Pseudomonas plecoglossicida. Such statistical methodologies as hierarchical cluster analysis heat map and principal component analysis were applied to better evaluate the effects of major parameters (soil pH, temperature, moisture, and cis-DCE/TCE concentrations) on the biological process. The bioremoval experiments were carried out in microcosms containing soil slurry, and the headspace concentrations of contaminants were analyzed by gas chromatography. The optimal bioremoval conditions for the mixture were soil water content >110%, pH 8-9, and temperature 15-20 degrees C, while the cis-DCE/TCE concentration did not significantly affect the mixture bioremoval within the tested range (similar to 10 mg per kg soil). Under the optimal conditions, benzene (97.7%), toluene (96.3%), and ethylbenzene (89.8%) were almost completely removed, while cis-DCE (24.5%), TCE (29.0%), m,p-xylene (36.3%), and o-xylene (29.6%) showed lower removal efficiencies. The obtained results would help to better design a remediation technology to be applied to the sites contaminated with mixed wastes, and the statistical methodologies used in this study appear to be very efficient and could serve as a template for optimization.

KeywordAerobic Bioremoval Hierarchical Cluster Analysis Mixture Optimization Principal Component Analysis
DOI10.1016/j.jhazmat.2016.09.020
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000388777300026
PublisherELSEVIER SCIENCE BV
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:13   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorShim, Hojae
Affiliation1.South China Agr Univ, Coll Nat Resources & Environm Sci, Guangzhou 510642, Guangdong, Peoples R China
2.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau Sar 999078, Peoples R China
3.South China Agr Univ, Key Lab, Minist Land & Resources Construct Land Transforma, Guangzhou 510642, Guangdong, Peoples R China
4.South China Agr Univ, Guangdong Prov Key Lab Land Use & Consolidat, Guangzhou 510642, Guangdong, Peoples R China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Li, Junhui,de Toledo, Renata Alves,Shim, Hojae. Multivariate optimization for the simultaneous bioremoval of BTEX and chlorinated aliphatic hydrocarbons by Pseudomonas plecoglossicida[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,321:238-246.
APA Li, Junhui,de Toledo, Renata Alves,&Shim, Hojae.(2017).Multivariate optimization for the simultaneous bioremoval of BTEX and chlorinated aliphatic hydrocarbons by Pseudomonas plecoglossicida.JOURNAL OF HAZARDOUS MATERIALS,321,238-246.
MLA Li, Junhui,et al."Multivariate optimization for the simultaneous bioremoval of BTEX and chlorinated aliphatic hydrocarbons by Pseudomonas plecoglossicida".JOURNAL OF HAZARDOUS MATERIALS 321(2017):238-246.
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