Levels of persistent toxic substances in different biochars and their potential ecological risk assessment

doi:10.1007/s11356-018-3280-8

	Levels of persistent toxic substances in different biochars and their potential ecological risk assessment
	Zhang, Guixiang 1; Zhao, Zhihua 1; Guo, Xiaofang 1; Han, Zhiwang 1; He, Qiusheng 1; Zhang, Fengsong 2; Xu, Hongying 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2018-11-01
卷号	25 期号:33 页码:33207-33215
关键词	Polycyclic aromatic hydrocarbon Heavy metal Biochar Level Ecological risk
ISSN号	0944-1344
DOI	10.1007/s11356-018-3280-8
通讯作者	Zhang, Fengsong(zhangfs@igsnrr.ac.cn)
英文摘要	This study investigated the levels of persistent toxic substances, such as 16 polycyclic aromatic hydrocarbons (sigma 16PAHs) and heavy metals (Cu, As, Cd, Zn, Pb, Ni, Mo, and Cr) in biochars produced from crop residues (walnut shell, corn cob, corn straw, rice straw, and rice husk) at different heat treatment temperatures (HTTs, 250, 400, and 600 degrees C). The levels of sigma 16PAHs in different biochars were 0.47-7.11mgkg(-1), with naphthalene and phenanthrene contributing the most. The sigma 16PAHs had the positive correlations with H/C and (O+N)/C, but had negative correlations with biochar surface areas. This finding indicates the increasing hydrophobic - interactions between the PAHs and the aromatic sheets of biochars and even the trapping of PAHs within the micropores with the increase of HTTs. The levels of heavy metals in rice residue-derived biochars were significantly higher than those in other biochars. The heavy metals had positive correlations with ash contents in the biochars, indicating the enrichment of heavy metals in the ash. The potential ecological risks of PAHs and heavy metals (dosage: 1%, w/w; frequency: 1) were minimal according to the risk quotient of negligible concentrations (RQ(NCs): 2.50-47.40, <<800) and maximum permissible concentrations (RQ(MPCs): 0.02-0.48, <<1) for PAHs and the potential ecological risk indexes (PERI: 0.01-0.28, <<150) for heavy metals.
资助项目	National Natural Science Foundation of China[41402305] ; National Natural Science Foundation of China[41401584] ; Science Technology Research and Extension Project of Shanxi Provincial Water Resources Department[2015SHJ3]
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; HEAVY-METALS ; SEWAGE-SLUDGE ; AMENDED SOIL ; PYROLYSIS ; TEMPERATURE ; FEEDSTOCK ; ELEMENTS ; BIOMASS ; CD
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000449920100032
资助机构	National Natural Science Foundation of China ; Science Technology Research and Extension Project of Shanxi Provincial Water Resources Department
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52542]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Fengsong
作者单位	1.Taiyuan Univ Sci & Technol, Coll Environm & Safety, Taiyuan 030024, Shanxi, Peoples R China 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guixiang,Zhao, Zhihua,Guo, Xiaofang,et al. Levels of persistent toxic substances in different biochars and their potential ecological risk assessment[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(33):33207-33215.
APA	Zhang, Guixiang.,Zhao, Zhihua.,Guo, Xiaofang.,Han, Zhiwang.,He, Qiusheng.,...&Xu, Hongying.(2018).Levels of persistent toxic substances in different biochars and their potential ecological risk assessment.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(33),33207-33215.
MLA	Zhang, Guixiang,et al."Levels of persistent toxic substances in different biochars and their potential ecological risk assessment".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.33(2018):33207-33215.