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Optimization of nutrients and inocula concentrations toward the aerobic bioremoval of BTEX and CAHs mixture from soil
Junhui Li; Yiqin Chen; Shanshan Dong; Hojae Shim
2011
Conference Name5th International Congress of Chemistry and Environment
Source PublicationProceedings of the 5th International Congress of Chemistry and Environment
Conference DateMay 27-29, 2011
Conference PlacePort Dickson, Malaysia
Abstract
Response surface methodology (RSM) was employed to optimize nitrogen, phosphorus and inocula concentrations for the co-metabolic degradation of chlorinated aromatic hydrocarbons (CAHs) and benzene, toluene, ethylbenzene and three isomers of xylene collectively known as BTEX using an indigenous aerobic microbial isolate from contaminated soil in lab-scale. The interactive effects of the three variables toward the bioremoval of BTEX (600 mg/kg), cis-dichloroethene (cis-DCE 10 mg/kg) and trichloroethene (TCE 10 mg/kg) were evaluated in a central composite design (CCD) with varying concentrations (nitrogen 40-200 mg/kg; phosphorus 4-36 mg/kg; inocula volume 1-9 mL, with the incubation period of 72 h at 25°C and 150 rpm). On the basis of the response surface and contour plots after 6 days of incubation, the optimal C:N:P ratio and inocula concentration for BTEX and CAHs degradation were obtained, which would help enhance the applicability of bioaugmentation technology to the mixed wastes contaminated sites.
Language英语
Fulltext Access
Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
AffiliationDepartment of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, MACAU
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Junhui Li,Yiqin Chen,Shanshan Dong,et al. Optimization of nutrients and inocula concentrations toward the aerobic bioremoval of BTEX and CAHs mixture from soil[C],2011.
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