Simultaneous removal of arsenic, cadmium, and lead from soil by iron-modified magnetic biochar
文献类型：期刊论文
| 作者 | Wan, Xiaoming1,2; Li, Chongyang2; Parikh, Sanjai J.2 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 261页码:10 |
| 关键词 | Arsenic Biochar Cadmium Lead Magnetite Sawdust |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2020.114157 |
| 通讯作者 | Wan, Xiaoming(wanxm.06s@igsnrr.ac.cn) |
| 英文摘要 | Effective and economically viable method to remove elevated metal(loid)s from farm and industrial lands remains a major challenge. In this study, magnetic biochar-based adsorbents with Fe3O4 particles embedded in a porous biochar matrix was synthesized via iron (Fe) treated biochar or thermal pyrolysis of Fe treated cedar sawdust. Application and separation of the adsorbent to a multi-contaminated soil slurry simultaneously removed 20-30% of arsenic, cadmium and lead within 24 h. Fast removal of multimetal(loid)s result from the decrease in all operationally defined fractions of metal(loid)s, not limited to the exchangeable fraction. The direct removal of arsenic-enriched soil particles was observed via micro X-ray fluorescence maps. Furthermore, through comparison of biochars with different production methods, it has been found that magnetization after pyrolysis treatment leads to stronger metals/metalloids adsorption with a higher q(e) (bound sorbate) than other treatments but pyrolysis after magnetization stabilized Fe oxides on the biochar surface, indicating a higher biochar recovery rate (similar to 65%), and thus a higher metal(loid)s removal efficiency. The stability of Fe oxides on the surface of biochar is the determining factor for the removal efficiency of metal(loid)s from soil. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS关键词 | ZERO-VALENT IRON ; HEAVY-METALS ; MINING AREA ; IMMOBILIZATION ; CONTAMINATION ; REMEDIATION ; RICE ; PH ; PHYTOEXTRACTION ; BIOAVAILABILITY |
| 资助项目 | National Key Research and Development Program of China[2018YFC1800302] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017075] ; China Scholarship Council (CSC) |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000531106500108 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key Research and Development Program of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; China Scholarship Council (CSC) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/159764]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wan, Xiaoming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA |
| 推荐引用方式 GB/T 7714 | Wan, Xiaoming,Li, Chongyang,Parikh, Sanjai J.. Simultaneous removal of arsenic, cadmium, and lead from soil by iron-modified magnetic biochar[J]. ENVIRONMENTAL POLLUTION,2020,261:10. |
| APA | Wan, Xiaoming,Li, Chongyang,&Parikh, Sanjai J..(2020).Simultaneous removal of arsenic, cadmium, and lead from soil by iron-modified magnetic biochar.ENVIRONMENTAL POLLUTION,261,10. |
| MLA | Wan, Xiaoming,et al."Simultaneous removal of arsenic, cadmium, and lead from soil by iron-modified magnetic biochar".ENVIRONMENTAL POLLUTION 261(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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