Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars

doi:10.1016/j.scitotenv.2019.134223

	Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars
	Tan, Lianshuai 2,3; Ma, Zhanghuai 2,3; Yang, Kaiqi 2,3; Cui, Qingliang 1,4; Wang, Ke 2,3; Wang, Tongtong 2,3; Wu, Gao-Lin 1,3; Zheng, Jiyong 2,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-01-10
卷号	699 页码:11
关键词	Biochar Physicochemical properties Aging Sorption experiment Lead
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.134223
通讯作者	Zheng, Jiyong(zhjy@ms.iswc.ac.cn)
英文摘要	Biochar is beneficial for soil amendment, but further research is still required on changes in its physicochemical properties during aging, especially in oxygen-containing functional groups and associated adsorption behaviors. Here, we used two different biochars, apple tree branch biochar and maize stalk biochar, and simulated the aging process by using freeze-thaw cycles, dry-wet cycles, and chemical oxidation methods. We investigated the changes in the physicochemical properties and Pb adsorption behavior of the biochars before and after aging treatments. The characterization results showed that the biochar surface structure changed after aging treatments. In general, the specific surface areas (SSAs) of the two biochars increased after chemical oxidation treatment but decreased after the other two treatments. The elemental content analyses indicated a decrease in the C content and increase in 0 content after artificial aging. In addition, the content of oxygen-containing functional groups in most biochars is increasing after treatment. The increase or decrease in SSA resulted in an increase or decrease in adsorption sites, respectively, thereby enhancing or reducing the adsorption capacity of the biochar. Furthermore, oxygen-containing functional groups enhanced the Pb adsorption capacity of biochar by complexation of free carboxyl and hydroxyl functional groups with Pb. Our research indicated that aging can lead to changes in the Pb adsorption capacity of biochar and that these changes vary depending on the type of aging and biochar. Our results will help to provide a better understanding of the changes in physicochemical properties and Pb adsorption capacity of biochar during the aging process in soil toward making full use of biochar for soil amendment. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Plan of China[2016YFC0501702] ; National Key Research and Development Plan of China[2017YFC0504504] ; National Natural Science Foundation of China[41571225] ; STS project of the Chinese Academy of Sciences[KFJ-STS-ZDTP-012]
WOS关键词	SORPTION CAPACITIES ; ACTIVATED CARBON ; BLACK CARBON ; SOIL ; PYROLYSIS ; PB(II) ; WATER ; LEAD ; TEMPERATURE ; REMEDIATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000500583400027
资助机构	National Key Research and Development Plan of China ; National Natural Science Foundation of China ; STS project of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130564]
专题	中国科学院地理科学与资源研究所
通讯作者	Zheng, Jiyong
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tan, Lianshuai,Ma, Zhanghuai,Yang, Kaiqi,et al. Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,699:11.
APA	Tan, Lianshuai.,Ma, Zhanghuai.,Yang, Kaiqi.,Cui, Qingliang.,Wang, Ke.,...&Zheng, Jiyong.(2020).Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars.SCIENCE OF THE TOTAL ENVIRONMENT,699,11.
MLA	Tan, Lianshuai,et al."Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars".SCIENCE OF THE TOTAL ENVIRONMENT 699(2020):11.