Arsenic Desorption from Ferric and Manganese Binary Oxide by Competitive Anions: Significance of pH
文献类型：期刊论文
| 作者 | Xu, Wei ; Wang, Hongjie ; Wu, Kun ; Liu, Ruiping ; Gong, Wenxin ; Qu, Jiuhui |
| 刊名 | WATER ENVIRONMENT RESEARCH
 |
| 出版日期 | 2012 |
| 卷号 | 84期号:6页码:521－528 |
| 关键词 | arsenic ferric and manganese binary oxide (FMBO) desorption competitive anions |
| ISSN号 | 1061-4303 |
| 中文摘要 | Ferric and manganese binary oxide (FMBO) has been used to remediate an arsenic (As)-polluted river in China, but insufficient data was available to (1) evaluate its effects on the environment and (2) propose a feasible strategy of addressing the arsenic-bearing FMBO. The desorption behavior of arsenic in the presence of four competitive anions (i.e., phosphate, silicate, sulfate, and bicarbonate) at different concentrations was investigated with pH ranging from 3 to 11. The presence of these anions promoted the desorption of arsenic from arsenic-bearing FMBO and followed the sequence of phosphate > silicate > sulfate approximate to bicarbonate across a wide pH range. Desorption of arsenate (As[V]) was more significant than that of arsenite (As[III]). Sequence dissolution of arsenic-bearing FMBO particles by NH4-oxalate/oxalic acid and hydrochloric acid were performed. The laboratory results indicated that As(III) was primarily occluded in the crystalline parts of the FMBO. The desorption behavior of arsenic could be described by kinetic models using the Elovich and power function equations under different pH conditions and was related to the adsorption of phosphate and silicate. pH played an important role in the desorption of arsenic, because of its effects on the species distribution of anions, surface charge of the arsenic-bearing FMBO, and subsequent electrostatic forces between anions and FMBO. Water Environ. Res., 84, 521 (2012). |
| WOS记录号 | WOS:000306075100006 |
| 公开日期 | 2014-11-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7816]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Xu, Wei,Wang, Hongjie,Wu, Kun,et al. Arsenic Desorption from Ferric and Manganese Binary Oxide by Competitive Anions: Significance of pH[J]. WATER ENVIRONMENT RESEARCH,2012,84(6):521－528. |
| APA | Xu, Wei,Wang, Hongjie,Wu, Kun,Liu, Ruiping,Gong, Wenxin,&Qu, Jiuhui.(2012).Arsenic Desorption from Ferric and Manganese Binary Oxide by Competitive Anions: Significance of pH.WATER ENVIRONMENT RESEARCH,84(6),521－528. |
| MLA | Xu, Wei,et al."Arsenic Desorption from Ferric and Manganese Binary Oxide by Competitive Anions: Significance of pH".WATER ENVIRONMENT RESEARCH 84.6(2012):521－528. |
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。