Characteristics of iron (hydr)oxides and Cr(VI) retention mechanisms in soils from tropical and subtropical areas of China
文献类型：期刊论文
| 作者 | Wang, Wentao1,2; Yang, Liu1; Gao, Dong1; Yu, Minghao1; Jiang, Shuqi3; Li, Jiangshan5; Zhang, Jing4; Feng, Xionghan1,2; Tan, Wenfeng1,2; Liu, Fan1,2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2024-03-05 |
| 卷号 | 465页码:13 |
| 关键词 | Soil Iron (hydr)oxides Microstructure Chromium(VI) adsorption Reduction |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2023.133107 |
| 英文摘要 | Though both iron (hydr)oxides and soil organic matter (SOM) significantly influence heavy metal behaviors in soils, studies on the characteristics of natural minerals and the synergic effects of the two on Cr(VI) transformation are limited. This study investigated Cr(VI) retention mechanisms in four soils from tropical and subtropical regions of China based on a comprehensive characterization of Fe (hydr)oxides. These soils exhibited varying quantities of hematite, ferrihydrite and goethite, with distinct Al substitution levels and varied exposed crystallographic facets. Adsorption experiments revealed a positive correlation between Fe (hydr)oxide content and Cr(VI) fixation amount on colloid, which was influenced by the mineral types, Al substitution levels and facet exposures. Further, Cr(VI) was sequestered on soil by adsorption and reduction. In soils enriched with crystalline Fe (hydr)oxides, Cr(VI) reduction was primarily governed by SOM, while in soils enriched with poorly crystalline Fe (hydr)oxides, mineral-associated Fe(II) also contributed to Cr(VI) reduction. Aging experiments demonstrated that SOM and mineral-associated Fe(II) expedited Cr (VI) passivation and diminished the Cr leaching. These results improve our understanding of natural Fe (hydr)oxide structures and their impact on Cr(VI) behavior in soils, and shed light on complex soil-contaminant interactions and remediation of Cr(VI) polluted soils. |
| 资助项目 | National Natural Science Founda- tions of China[42077015] ; National Natural Science Founda- tions of China[41771267] ; Key Science and Tech- nology Projects of Inner Mongolia Autonomous Region[2019ZD001] ; Fundamental Research Funds for the Central Universities[103510320036] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001133549300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40193]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yin, Ming; Yin, Hui |
| 作者单位 | 1.Huazhong Agr Univ, Coll Resources & Environm, Key Lab Arable Land Conservat Middle & Lower Reach, Minist Agr & Rural affairs, Wuhan 430070, Peoples R China 2.Minist Ecol & Environm, State Environm Protect Key Lab Soil Hlth & Green R, Wuhan 430070, Peoples R China 3.Hubei Univ, Fac Resources & Environm Sci, Wuhan 430070, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 6.Shiyan Ecol Environm Monitoring Ctr Hubei Prov Dep, Shiyan 442000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wentao,Yang, Liu,Gao, Dong,et al. Characteristics of iron (hydr)oxides and Cr(VI) retention mechanisms in soils from tropical and subtropical areas of China[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,465:13. |
| APA | Wang, Wentao.,Yang, Liu.,Gao, Dong.,Yu, Minghao.,Jiang, Shuqi.,...&Yin, Hui.(2024).Characteristics of iron (hydr)oxides and Cr(VI) retention mechanisms in soils from tropical and subtropical areas of China.JOURNAL OF HAZARDOUS MATERIALS,465,13. |
| MLA | Wang, Wentao,et al."Characteristics of iron (hydr)oxides and Cr(VI) retention mechanisms in soils from tropical and subtropical areas of China".JOURNAL OF HAZARDOUS MATERIALS 465(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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