In-situ biodegradation of harmful pollutants in landfill by sludge modified biochar used as biocover

doi:10.1016/j.envpol.2019.113710

	In-situ biodegradation of harmful pollutants in landfill by sludge modified biochar used as biocover
	Qin, Linbo 2,3; Huang, Xinming 1; Xue, Qiang 2,3; Liu, Lei 2,3; Wan, Yong 2,3
刊名	ENVIRONMENTAL POLLUTION
	2020-03-01
卷号	258 页码:10
关键词	MSW landfills Sludge modified biochar VOCs In-situ biodegradation
ISSN号	0269-7491
DOI	10.1016/j.envpol.2019.113710
英文摘要	MSW landfill releases a lot of harmful pollutants such as H2S, NH3, and VOCs. In this study, two laboratory-scale biocovers such as biochar (BC) derived from agricultural & forestry wastes (AFW) pyrolysis, and sludge modified the biochar (SBC) were designed and used to remove the harmful pollutants. In order to understand in-situ biodegradation mechanism of the harmful pollutants by the SBC, the removal performances of the harmful pollutants together with the bacterial community in the BC and SBC were investigated in simulated landfill systems for 60 days comparing with the contrast experiment of a landfill cover soil (LCS). Meanwhile, the adsorption capacities of representative harmful pollutants (hydrogen sulfide, toluene, acetone and chlorobenzene) in the LCS, BC, and SBC were also tested in a fixed bed reactor. The removal efficiencies of the harmful pollutants by the SBC ranged from 95.43% to 100.00%, which was much higher than that of the LCS. The adsorption capacities of the harmful pollutants in the SBC were 4 times higher than that of the LCS since the SBC exhibited higher BET surface and N-containing functional groups. Meanwhile, the biodegradation rates of the harmful pollutants in the SBC were also much higher than that of the LCS since the populations of the bacterial community in the SBC were more abundant due to its facilitating the growth and activity of microorganisms in the porous structure of the SBC. In addition, a synergistic combination of adsorption and biodegradation in the SBC that enhanced the reproduction rate of microorganisms by consuming the absorbed-pollutants as carbon sources, which also contributed to enhance the biodegradation rates of the harmful pollutants. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Science Foundation[51625903] ; China Postdoctoral Science Foundation[2018M642960] ; Natural Science Foundation of Hubei Province[2019AHB073] ; National Natural Science Foundation of China[51827814] ; National Natural Science Foundation of China[51609241] ; Wuhan science and technology conversion special project[2018060403011348] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017376] ; Foundation for Innovative Research Groups of Hubei Province in China[2019CFA012]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000519655100005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23749]
专题	中科院武汉岩土力学所
通讯作者	Xue, Qiang; Liu, Lei
作者单位	1.Wuhan Univ Sci & Technol, Coll Resources & Environm Engn, Wuhan 430081, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Prov Key Lab Contaminated Sludge & Soil Sci, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Qin, Linbo,Huang, Xinming,Xue, Qiang,et al. In-situ biodegradation of harmful pollutants in landfill by sludge modified biochar used as biocover[J]. ENVIRONMENTAL POLLUTION,2020,258:10.
APA	Qin, Linbo,Huang, Xinming,Xue, Qiang,Liu, Lei,&Wan, Yong.(2020).In-situ biodegradation of harmful pollutants in landfill by sludge modified biochar used as biocover.ENVIRONMENTAL POLLUTION,258,10.
MLA	Qin, Linbo,et al."In-situ biodegradation of harmful pollutants in landfill by sludge modified biochar used as biocover".ENVIRONMENTAL POLLUTION 258(2020):10.