干旱区生态环境知识资源中心(Arid): Biochar application on mine tailings from arid zones: Prospects for mine reclamation

Arid

DOI	10.1016/j.jaridenv.2023.105040
	Biochar application on mine tailings from arid zones: Prospects for mine reclamation
	Chavez-Garcia, E.; Gonzalez-Mendez, B.; Molina-Freaner, F.
通讯作者	González-Méndez, B
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2023
卷号	217
英文摘要	Biochar is a carbon-rich material that can improve soil properties and has the potential for mine tailings reclamation, particularly in drylands. However, few studies have examined the effect of its production conditions (e.g., biomass and temperature) and its potential benefits in these environments. In this review, we examine its effectiveness in the improvement of physicochemical and biological properties and metal(oid) retention in mine tailings from arid and semiarid environments. Our results indicate that although most biochars generally improve bulk density, moisture, organic carbon and cation exchange capacity of the mine tailings, wood (Pinus) biochar gives the best results, namely, lower bulk density, higher moisture, organic carbon, and cation exchange capacity. The biochar tends to increase the pH of treated acid mine tailings by less than 1 unit but reach up to 2 units with manure biochars. As the increasing pH is related to metal immobilization, the manure biochars had a great performance in reducing the soluble concentration of Fe, Zn, Pb, Cd, Cu, Cr, and Ni in mine tailings. However, all tested biochars increased the concentration of As. Biochar increased respiration and resulted in a slight reduction in microbial activity. In general, the biochar application to mine tailings in arid zones has multiple benefits. Nevertheless, most of the wood and pruning feedstock reported were temperate and subtropical species, which may make its use more expensive and less sustainable. Locally available feedstock as crop residues could be enriched in Na+, and Cl- representing a salinization risk with continuous application. Further work is needed to understand the biochar behavior under water stress conditions, to homogenize its production conditions by testing a greater diversity of local feedstocks, tailing types, doses, and mixtures. Additionally, it is necessary to define laboratory and field protocols for testing the biochar efficiency, including a basic set of variables to be measured, to make the reported data comparable.
英文关键词	Metal pollution Soil quality assessment Feedstock Mine wastes Organic amendment Bioremediation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001059056500001
WOS关键词	PYROLYSIS TEMPERATURE ; HEAVY-METALS ; SOIL QUALITY ; PYRITIC TAILINGS ; PORE-WATER ; REMEDIATION ; BIOMASS ; PHYTOREMEDIATION ; TECHNOSOLS ; AMENDMENTS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397156
推荐引用方式 GB/T 7714	Chavez-Garcia, E.,Gonzalez-Mendez, B.,Molina-Freaner, F.. Biochar application on mine tailings from arid zones: Prospects for mine reclamation[J],2023,217.
APA	Chavez-Garcia, E.,Gonzalez-Mendez, B.,&Molina-Freaner, F..(2023).Biochar application on mine tailings from arid zones: Prospects for mine reclamation.JOURNAL OF ARID ENVIRONMENTS,217.
MLA	Chavez-Garcia, E.,et al."Biochar application on mine tailings from arid zones: Prospects for mine reclamation".JOURNAL OF ARID ENVIRONMENTS 217(2023).