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Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration
Li, You1,2; Liao, Xiaoyong1; Li, Wunan1
2019-03-01
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume212Pages:81-89
Corresponding AuthorLiao, Xiaoyong(Liaoxy@igsnrr.ac.cn)
AbstractThis study mainly examines the effects of combined sieving and washing process by remediation equipment for heavy metal decontamination at a historically contaminated site. The laboratory results showed that the optimum parameters for the washing process were pH 2, 30 degrees C, and 10:1 liquid/soil ratio. The results from field remediation proved that the overall removal of arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) could reach 37.1-51.1%, 44.3-78.1%, 21.2-64.3% and 29.2-59.4%, respectively, in various particle fractions. To prevent secondary pollution, coagulating sedimentation and adsorption processes were used to treat the wastewater, with removal rates of 99.4% As, 99.9% Cd, 93.5% Pb and 99.1% Zn. A composite material was adopted to solidify the fine clay that was enriched with a large amount of metals and form it into non-fired bricks. As seen from the mass balance, 23 kg of stone and 140 kg of gravel were separated, and 367 kg of fine clay with a 45% soil moisture content was treated by solidification and stabilization, achieving a volume reduction of approximately 36.5%. In conclusion, the presented method can be applied to heavy-metal-contaminated sites to greatly reduce the amount of pollutants in soils while at the same time minimizing the environmental risk. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordSoil washing Physical separation Multi-metal contamination Optimization Remediation equipment
DOI10.1016/j.jclepro.2018.11.294
WOS KeywordHEAVY-METALS ; REMOVAL ; ZN ; IMMOBILIZATION ; TECHNOLOGIES ; COMBINATION ; ZINC ; EDTA ; PB ; CR
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA23000000] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2016-5-5]
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000457952500008
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49910
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiao, Xiaoyong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing Key Lab Environm Damage Assessment & Reme, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100099, Peoples R China
Recommended Citation
GB/T 7714
Li, You,Liao, Xiaoyong,Li, Wunan. Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration[J]. JOURNAL OF CLEANER PRODUCTION,2019,212:81-89.
APA Li, You,Liao, Xiaoyong,&Li, Wunan.(2019).Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration.JOURNAL OF CLEANER PRODUCTION,212,81-89.
MLA Li, You,et al."Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration".JOURNAL OF CLEANER PRODUCTION 212(2019):81-89.
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