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J Hazard Mater

Title:		Potential application of biocover soils to landfills for mitigating toluene emission
Author(s):		Su Y; Pei J; Tian B; Fan F; Tang M; Li W; He R;
Address:		"Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China. Institute of Environmental Science, Zhejiang University, Hangzhou 310058, China. Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China. Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China. Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China. Electronic address: heruo@zju.edu.cn"
Journal Title:		J Hazard Mater
Year:		2015
Volume:		20150604
Issue:
Page Number:		18 - 26
DOI:		10.1016/j.jhazmat.2015.06.007
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Biocover soils have been demonstrated to be a good alternative cover material to mitigate CH4 emission from landfills. To evaluate the potential of biocover soil in mitigating emissions of non-methane volatile organic compounds (NMVOCs) from landfills, simulated cover soil columns with the influx of toluene (chosen as typical of NMVOCs) concentrations of 102-1336 mg m(-3) in the presence or absence of the major landfill gas components (i.e., CH4 and CO2) were conducted in this study. In the two experimental materials (waste biocover soils (WBS) and landfill cover soils (LCS)), higher toluene reduction was observed in WBS with respect to LCS. After the introduction of landfill gas, an increase of microbial diversity and relative abundance of toluene-degrading bacteria and methanotrophs occurred in WBS. To illustrate the role of toluene-degrading activity in mitigating toluene emissions through landfill covers, an analytical model was developed by incorporating the steady-state vapor transport with the first-order kinetics of aerobic biodegradation limited by O2 availability. This study demonstrated that biocover soils have great potential in applying to landfills for mitigating toluene emission to the atmosphere"
Keywords:		"Adsorption *Biodegradation, Environmental *Soil Soil Microbiology Soil Pollutants/*metabolism Toluene/*metabolism *Waste Disposal Facilities Landfill cover soil Landfill gas Methane oxidation Microbial community Toluene degradation;"
Notes:		"MedlineSu, Yao Pei, Junshen Tian, Baohu Fan, Fengxi Tang, Mengling Li, Wei He, Ruo eng Research Support, Non-U.S. Gov't Netherlands 2015/06/16 J Hazard Mater. 2015 Dec 15; 299:18-26. doi: 10.1016/j.jhazmat.2015.06.007. Epub 2015 Jun 4"