Green remediation of high-lead contaminated soil by stabilization/solidification with insoluble humin: Long-term leaching and mechanical characteristics
文献类型：期刊论文
| 作者 | Ge, Shangqi6; Jiang, Wenhao3; Zheng, Lingwei4,5; Xie, Xinyu2,6; Pan, Yize1,6 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2021-11-15 |
| 卷号 | 324页码:12 |
| 关键词 | Green material Cement-based S/S Compressive strength Leaching Lead speciation |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2021.129184 |
| 英文摘要 | High concentrations of lead in soil will greatly weaken the stabilization/solidification effect. Humin (HM) is expected to improve this process because it is a neutral, insoluble, porous and green material as well as an eco-friendly adsorbent extracted from natural peat soil. However, HM has not been studied with respect to the stabilization/solidification (S/S) characteristics of potentially toxic element (PTE)-contaminated soil due to its different extraction sources and methods, as well as complex properties. To study these effects, insoluble HM was extracted for treatment of high-lead contaminated soil by cement-based S/S. The experimental results show that HM has a strong adsorption capacity for lead with a maximum adsorption capacity of 200.2 mg kg(-1). The negative influence of a high content of lead on the compressive strength over a 0-90-day period is weakened after adding HM to the soil, wherein a competitive mechanism between HM and a high concentration of lead is proposed. The lead leaching concentration of stabilized soil is significantly decreased under different leaching methods from 0 to 60 days and then decreases slowly. The lead speciation results for the stabilized soil determined through the Tessier sequential extraction method show that HM promotes the gradual chemical transformation of lead from exchangeable and carbonate-bound fractions to a more stable state, with respective decreases of 27.5% and 15.1%. In addition, SEM-EDS images show that HM with a high porosity and specific surface area coexists well with cement, which promotes the stabilization of lead. In conclusion, HM contributes to decreasing the mobility and bioavailability of lead and achieving environmental remediation. |
| 资助项目 | National Natural Science Foundation of China[51378469] ; Natural Science Foundation of Zhejiang Province, China[LZ20E080001] ; Natural Science Foundation of Zhejiang Province, China[LQ19E080009] ; Natural Science Foundation of Ningbo, China[2019A610444] ; Application Research of Public Welfare Technology in Ningbo, China[2019C50016] ; Engineering Research Center of Prevention and Control of Geological Disasters in Northern Fujian, Fujian Province University, China[WYERC 2020-3] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000724703100003 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28316]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zheng, Lingwei |
| 作者单位 | 1.Northwestern Univ, Dept Civil & Environm Engn, Mech & Energy Lab, Evanston, IL 60208 USA 2.Wenzhou Res Inst, Zhejiang Univ, Wenzhou 325000, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 4.NingboTech Univ, Ningbo 315100, Peoples R China 5.Ningbo Res Inst, Zhejiang Univ, Ningbo 315100, Peoples R China 6.Zhejiang Univ, Res Ctr Coastal & Urban Geotech Engn, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge, Shangqi,Jiang, Wenhao,Zheng, Lingwei,et al. Green remediation of high-lead contaminated soil by stabilization/solidification with insoluble humin: Long-term leaching and mechanical characteristics[J]. JOURNAL OF CLEANER PRODUCTION,2021,324:12. |
| APA | Ge, Shangqi,Jiang, Wenhao,Zheng, Lingwei,Xie, Xinyu,&Pan, Yize.(2021).Green remediation of high-lead contaminated soil by stabilization/solidification with insoluble humin: Long-term leaching and mechanical characteristics.JOURNAL OF CLEANER PRODUCTION,324,12. |
| MLA | Ge, Shangqi,et al."Green remediation of high-lead contaminated soil by stabilization/solidification with insoluble humin: Long-term leaching and mechanical characteristics".JOURNAL OF CLEANER PRODUCTION 324(2021):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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