Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Humic substances as a washing agent for Cd-contaminated soils | |
Meng, Fande1,2; Yuan, Guodong1 ; Wei, Jing1; Bi, Dongxue1,2; Ok, Yong Sik3,4; Wang, Hailong5,6,7; Yuan GD(袁国栋)
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| 发表期刊 | CHEMOSPHERE
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| ISSN | 0045-6535 |
| 2017-08-01 | |
| 卷号 | 181页码:461-467 |
| 关键词 | Cadmium Calcium Hydroxide Leonardite Soil Remediation Soil Washing |
| 研究领域 | Environmental Sciences |
| DOI | 10.1016/j.chemosphere.2017.04.127 |
| 产权排序 | [Meng, Fande; Yuan, Guodong; Wei, Jing; Bi, Dongxue] Chinese Acad Sci, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China; [Meng, Fande; Bi, Dongxue] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Ok, Yong Sik] Kangwon Natl Univ, Sch Nat Resources & Environm Sci, Chunchon 24341, South Korea; [Ok, Yong Sik] Kangwon Natl Univ, Korea Biochar Res Ctr, Chunchon 24341, South Korea; [Wang, Hailong] Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China; [Wang, Hailong] Zhejiang A&F Univ, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Linan 311300, Zhejiang, Peoples R China; [Wang, Hailong] Guangdong Dazhong Agr Sci Co Ltd, Dongguan 523169, Guangdong, Peoples R China |
| 作者部门 | 海岸带环境过程实验室 |
| 英文摘要 | Cost-effective and eco-friendly washing agents are in demand for Cd contaminated soils. Here, we used leonardite-derived humic substances to wash different types of Cd-contaminated soils, namely, a silty loam (Soil 1), a silty clay loam (Soil 2), and a sandy loam (Soil 3). Washing conditions were investigated for their effects on Cd removal efficiency. Cadmium removal was enhanced by a high humic substance concentration, long washing time, near neutral pH, and large solution/soil ratio. Based on the tradeoff between efficiency and cost, an optimum working condition was established as follows: humic substance concentration (3150 mg C/L), solution pH (6.0), washing time (2 h) and a washing solution/soil ratio (5). A single washing removed 0.55 mg Cd/kg from Soil 1 (1.33 mg Cd/kg), 2.32 mg Cd/kg from Soil 2 (6.57 mg Cd/kg), and 1.97 mg Cd/kg from Soil 3 (2.63 mg Cd/kg). Cd in effluents was effectively treated by adding a small dose of calcium hydroxide, reducing its concentration below the discharge limit of 0.1 mg/L in China. Being cost-effective and safe, humic substances have a great potential to replace common washing agents for the remediation of Cd-contaminated soils. Besides being environmentally benign, humic substances can improve soil physical, chemical, and biological properties. (C) 2017 Elsevier Ltd. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Chinese National Key Research and Development Program(2016YFD0200303) ; National Natural Science Foundation of China(21577131) ; Special Funding for the Introduced Innovative R&D Team of Dongguan Municipal Government(2014607101003) ; Key Research and Development Program of Shandong Province(2016CYJS05A01-1) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | HEAVY-METALS ; PADDY SOILS ; FERRIC-CHLORIDE ; POLLUTED SOILS ; REMEDIATION ; CADMIUM ; FIELD ; ACIDS ; CU ; IMMOBILIZATION |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000402343700052 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/22492 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 通讯作者 | Yuan GD(袁国栋) |
| 作者单位 | 1.Chinese Acad Sci, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Kangwon Natl Univ, Sch Nat Resources & Environm Sci, Chunchon 24341, South Korea 4.Kangwon Natl Univ, Korea Biochar Res Ctr, Chunchon 24341, South Korea 5.Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China 6.Zhejiang A&F Univ, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Linan 311300, Zhejiang, Peoples R China 7.Guangdong Dazhong Agr Sci Co Ltd, Dongguan 523169, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Fande,Yuan, Guodong,Wei, Jing,et al. Humic substances as a washing agent for Cd-contaminated soils[J]. CHEMOSPHERE,2017,181:461-467. |
| APA | Meng, Fande.,Yuan, Guodong.,Wei, Jing.,Bi, Dongxue.,Ok, Yong Sik.,...&袁国栋.(2017).Humic substances as a washing agent for Cd-contaminated soils.CHEMOSPHERE,181,461-467. |
| MLA | Meng, Fande,et al."Humic substances as a washing agent for Cd-contaminated soils".CHEMOSPHERE 181(2017):461-467. |
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