气候变化领域集成服务门户(CCPortal): Immobilization of high-Pb contaminated soil by oxalic acid activated incinerated sewage sludge ash*

CCPortal

DOI	10.1016/j.envpol.2021.117120
	Immobilization of high-Pb contaminated soil by oxalic acid activated incinerated sewage sludge ash*
	Li, Jiang-shan; Wang, Qiming; Chen, Zhen; Xue, Qiang; Chen, Xin; Mu, Yanhu; Poon, Chi Sun
通讯作者	Xue, Q (通讯作者)，Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	284
英文摘要	Identifying effective and low-cost agents for the remediation of Pb-contaminated soil is of great importance for field-scale applications. In this study, the feasibility of reusing incinerated sewage sludge ash (ISSA), a waste rich in phosphorus, under activation by oxalic acid (OA) for the remediation of highPb contaminated soil was investigated. ISSA and OA were mixed at different proportions for the treatment of the high-Pb contaminated soil (5000 mg/kg). The Pb immobilization efficacy was further examined by both the standard deionized water leaching test and the toxicity characteristic leaching procedure (TCLP). The overall results showed that the use of the ISSA alone and an appropriate mixture of the ISSA and OA could effectively reduce the leachability of Pb from soil. 20% ISSA together with 30% OA (0.2 mol/L) reduced leached Pb concentration by 99%. The main stabilization mechanisms were then explored by different microstructural and spectroscopic analytical techniques including SEM, XRD and FTIR. Apparently, OA released phosphate from the ISSA and Pb from soil via acid attack, which combined and precipitated as stable lead phosphate minerals. However, excessive OA could cause high leaching of phosphate and zinc from the ISSA. Overall, this study indicates that ISSA could be used together with OA to remediate high-Pb contaminated soil, but careful design of mix proportions is necessary before practical application to avoid excessive leaching of phosphate and zinc from the ISSA. 0 2021 Elsevier Ltd. All rights reserved.
关键词	LEAD IMMOBILIZATION CHEMICAL-EXTRACTION HEAVY-METALS LOW-CARBON PHOSPHATE PHOSPHORUS STABILIZATION/SOLIDIFICATION REMEDIATION ZN SOLIDIFICATION/STABILIZATION
英文关键词	Lead contaminated soil; Sewage sludge ash; Immobilization; Leachability; Oxalic acid
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000672532400016
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254635
作者单位	[Li, Jiang-shan; Chen, Zhen; Xue, Qiang; Chen, Xin] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China; [Li, Jiang-shan; Wang, Qiming; Chen, Zhen; Xue, Qiang; Chen, Xin; Poon, Chi Sun] IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Wuhan 430071, Peoples R China; [Wang, Qiming; Poon, Chi Sun] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China; [Mu, Yanhu] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Ground Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiang-shan,Wang, Qiming,Chen, Zhen,et al. Immobilization of high-Pb contaminated soil by oxalic acid activated incinerated sewage sludge ash*[J]. 中国科学院西北生态环境资源研究院,2021,284.
APA	Li, Jiang-shan.,Wang, Qiming.,Chen, Zhen.,Xue, Qiang.,Chen, Xin.,...&Poon, Chi Sun.(2021).Immobilization of high-Pb contaminated soil by oxalic acid activated incinerated sewage sludge ash*.ENVIRONMENTAL POLLUTION,284.
MLA	Li, Jiang-shan,et al."Immobilization of high-Pb contaminated soil by oxalic acid activated incinerated sewage sludge ash*".ENVIRONMENTAL POLLUTION 284(2021).