Geoenvironmental properties of industrially contaminated site soil solidified/stabilized with a sustainable by-product-based binder
文献类型：期刊论文
| 作者 | Feng, Ya-Song4; Du, Yan-Jun4; Zhou, Annan1; Zhang, Ming5; Li, Jiang-Shan3; Zhou, Shi-Ji4; Xia, Wei-Yi2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-04-15 |
| 卷号 | 765页码:16 |
| 关键词 | Contaminated soil Heavy metal By-products Solidification/stabilization Leachability Unconfined compressive strength |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.142778 |
| 英文摘要 | This paper presents a study on utilizing a novel BCP binder, basic oxygen furnace slag (BOFS) activated with mixed calcium carbide residue (CCR) and phosphogypsum (PG), to solidify/stabilize heavy metals in industrial contaminated site soil. The effects of curing time and binder dosage on the geoenvironmental properties of the solidified/stabilized soil including soil pH, electrical conductivity, unconfined compressive strength, and leachability were tested and discussed. Chemical speciation of target heavy metals, pore-size distribution of treated soil, and phase identification of reaction products were analyzed to understand the mechanisms leading to the change of geoenvironmental properties. The results demonstrated that the addition of the BCP binder yielded remarkable increase in soil pH, unconfined compressive strength, and relative binding intensity index (I-R) of target heavy metals including nickel (Ni) and zinc (Zn), while significantly decreased the electrical conductivity and leachability of contaminated soil. The IR value of heavy metals had a good linear relationship with the leached concentrations on a semi-logarithmic scale. The formation of heavy metal-bearing precipitates, absorptivity of calcium silicate hydrate (C-S-H), heavy metals encapsulation by C-S-H, and ion-exchange of heavy metals with ettringite (AFt) contributed to the immobilization of heavy metals in the solidified/stabilized soil. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | National Key Research and Development Program of China[2019YFC1806000] ; National Natural Science Foundation of China[41877248] ; National Natural Science Foundation of China[41902276] ; Environmental Protection Scientific Research Project ofJiangsu Province[2016031] ; Jiangsu Province Funded Project for Recruiting Postdoctoral Researchers[2019Z037] ; China Scholarship Council (CSC) |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000616232300065 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25703]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Du, Yan-Jun |
| 作者单位 | 1.Royal Melbourne Inst Technol Rim, Civil & Infrastruct Engn, Sch Engn, Melbourne, Vic 3000, Australia 2.Jiangsu Prov Acad Environm Sci, Nanjing 210036, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 4.Southeast Univ, Jiangsu Key Lab Urban Underground Engn & Environm, Inst Geotech Engn, Nanjing 211189, Peoples R China 5.Natl Inst Adv Ind Sci & Technol, Geol Survey Japan, 1-1-1 Higashi, Tsukuba, Ibaraki 3058567, Japan |
| 推荐引用方式 GB/T 7714 | Feng, Ya-Song,Du, Yan-Jun,Zhou, Annan,et al. Geoenvironmental properties of industrially contaminated site soil solidified/stabilized with a sustainable by-product-based binder[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,765:16. |
| APA | Feng, Ya-Song.,Du, Yan-Jun.,Zhou, Annan.,Zhang, Ming.,Li, Jiang-Shan.,...&Xia, Wei-Yi.(2021).Geoenvironmental properties of industrially contaminated site soil solidified/stabilized with a sustainable by-product-based binder.SCIENCE OF THE TOTAL ENVIRONMENT,765,16. |
| MLA | Feng, Ya-Song,et al."Geoenvironmental properties of industrially contaminated site soil solidified/stabilized with a sustainable by-product-based binder".SCIENCE OF THE TOTAL ENVIRONMENT 765(2021):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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