Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron
文献类型：期刊论文
| 作者 | Guo, Jianlong ; Yin, Zhipeng; Zhong, Wen; Jing, Chuanyong
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2022-02 |
| 卷号 | 112期号:0页码:152-160 |
| 关键词 | WEAK MAGNETIC-FIELD ZEROVALENT IRON REMOVAL BEHAVIOR WATER PERFORMANCE ADSORPTION REDUCTION MOBILITY |
| ISSN号 | 1001-0742 |
| 英文摘要 | Arsenic (As) and antimony (Sb) are usually coexistent in mine wastes and pose a great threat to human health. The As immobilization by nano zero-valent iron (nZVI) is promising, however, the stabilization for co-occurring As and Sb is not known. Herein, the immobilization and transformation of As and Sb in nZVI-treated sediments were evaluated using complementary leaching experiments and characterization techniques. Raw sediment samples from a gold-antimony deposit revealed the co-existence of ultrahigh As and Sb at 50.3 and 14.9 g/kg, respectively. Leaching results show that As was more efficiently stabilized by nZVI than Sb, which was primarily due to the soluble fraction that was readily absorbed by nZVI of As was higher. As the nZVI treatment proceeds, the oxidation and reduction of As and Sb occur simultaneously as evidenced by XPS analysis. The primary oxidant, hydroxyl radicals, was detected by EPR studies, proving the occurrence of nZVI induced Fenton reaction. This study sheds light on differences in the interaction and immobilization of nZVI with Sb and As in co-contaminated sediments. (c) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47551]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 通讯作者 | Jing, Chuanyong |
| 作者单位 | 1.Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Jianlong,Yin, Zhipeng,Zhong, Wen,et al. Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,112(0):152-160. |
| APA | Guo, Jianlong,Yin, Zhipeng,Zhong, Wen,&Jing, Chuanyong.(2022).Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron.JOURNAL OF ENVIRONMENTAL SCIENCES,112(0),152-160. |
| MLA | Guo, Jianlong,et al."Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron".JOURNAL OF ENVIRONMENTAL SCIENCES 112.0(2022):152-160. |
入库方式： OAI收割
来源：生态环境研究中心
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。