Interfacial adsorption facilitated arsenate immobilization in soil using biochar-supported nanoscale goethite
文献类型：期刊论文
| 作者 | Nie, Jing2,3,4; Cao, Shiyu2,4; Shi, Yanbiao1; Li, Jiangshan2,4 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2025-07-08 |
| 卷号 | 360页码:9 |
| 关键词 | As(V)-contaminated soil As(V) immobilization Biochar Nanoscale goethite Interfacial mechanism |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2024.131122 |
| 英文摘要 | As(V)-contaminated soil is a serious global environmental issue and As(V) immobilization is still a challenge. This study synthesizes and applies a high-performance biochar-supported nanoscale goethite (nGBC) to immobilize As(V) in soil, elucidating the interfacial mechanisms through various characterization methods and density functional theory calculations. nGBC was successfully synthesized at 600 degrees C for 2 h using 0.6 mol/L Fe3+, achieving a maximum adsorption capacity of 110.28 mg/g As(V). When the As(V) concentration in soil of 50 mg/ g, the leaching As(V) concentration decreases to 0.0004 mg/L after 28 d remediation, which is lower than Class I groundwater quality limit. During the remediation, As(V) replaces hydroxyl groups on goethite, and forms stable bidentate binuclear complexes with surface iron. Consequently, nGBC transformed organic, carbonate, and exchangeable fractions into a more stable residue fraction. This study offers an effective material for stabilizing As(V)-contaminated soils and introduces a novel strategy for investigating the interfacial remediation mechanisms of heavy metal-contaminated soils. |
| 资助项目 | National Key Research and Development Program[2023YFC3707801] ; National Natural Science Foundation of China[52400195] ; National Natural Science Foundation of China[42177163] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001392213800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37742]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Cao, Shiyu; Li, Jiangshan |
| 作者单位 | 1.Sichuan Univ, Coll Architecture & Environm, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China 2.IRSM, CAS HK PolyU Joint Lab Solid Waste Sci, Wuhan 430071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nie, Jing,Cao, Shiyu,Shi, Yanbiao,et al. Interfacial adsorption facilitated arsenate immobilization in soil using biochar-supported nanoscale goethite[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2025,360:9. |
| APA | Nie, Jing,Cao, Shiyu,Shi, Yanbiao,&Li, Jiangshan.(2025).Interfacial adsorption facilitated arsenate immobilization in soil using biochar-supported nanoscale goethite.SEPARATION AND PURIFICATION TECHNOLOGY,360,9. |
| MLA | Nie, Jing,et al."Interfacial adsorption facilitated arsenate immobilization in soil using biochar-supported nanoscale goethite".SEPARATION AND PURIFICATION TECHNOLOGY 360(2025):9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。