Remediation of organic and inorganic arsenic contaminated groundwater using a nanocrystalline TiO2-based adsorbent
文献类型：期刊论文
| 作者 | Jing, Chuanyong ; Meng, Xiaoguang ; Calvache, Edwin ; Jiang, Guibin |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2009-09-08 |
| 卷号 | 157期号:1页码:2514-2519 |
| 关键词 | Organic arsenic Inorganic arsenic Adsorptive filtration TiO2 Charge distribution multi-site surface complexation model EXAFS |
| 中文摘要 | A nanocrystalline TiO2-based adsorbent was evaluated for the simultaneous removal of As(V), As(III), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA) in contaminated groundwater. Batch experimental results show that As adsorption followed pseudo-second order rate kinetics. The competitive adsorption was described with the charge distribution multi-site surface complexation model (CD-MUSIC). The groundwater containing an average of 329 mu g L-1 As(III), 246 mu g L-1 As(V), 151 mu g L-1 MMA, and 202 mu g L-1 DMA was continuously passed through a TiO2 filter at an empty bed contact time of 6 min for 4 months. Approximately 11000, 14 000, and 9900 bed volumes of water had been treated before the As(III), As(V), and MMA concentration in the effluent increased to 10 mu g L-1. However, very little DMA was removed. The EXAFS results demonstrate the existence of a bidentate binuclear As(V) surface complex on spent adsorbent, indicating the oxidation of adsorbed As(III). (c) 2009 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000267586200040 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21563]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Jing, Chuanyong,Meng, Xiaoguang,Calvache, Edwin,et al. Remediation of organic and inorganic arsenic contaminated groundwater using a nanocrystalline TiO2-based adsorbent[J]. ENVIRONMENTAL POLLUTION,2009,157(1):2514-2519. |
| APA | Jing, Chuanyong,Meng, Xiaoguang,Calvache, Edwin,&Jiang, Guibin.(2009).Remediation of organic and inorganic arsenic contaminated groundwater using a nanocrystalline TiO2-based adsorbent.ENVIRONMENTAL POLLUTION,157(1),2514-2519. |
| MLA | Jing, Chuanyong,et al."Remediation of organic and inorganic arsenic contaminated groundwater using a nanocrystalline TiO2-based adsorbent".ENVIRONMENTAL POLLUTION 157.1(2009):2514-2519. |
入库方式： OAI收割
来源：生态环境研究中心
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