REMOVAL OF As (V) AND As(III) FROM WATER USING Mn-DOPED MAGHEMITE NANOPARTICLES
文献类型：期刊论文
| 作者 | Yu, Lian
|
| 刊名 | FRESENIUS ENVIRONMENTAL BULLETIN
 |
| 出版日期 | 2014 |
| 卷号 | 23期号:2A页码:508-515 |
| 关键词 | Maghemite nanoparticles manganese dioxide arsenic adsorption magnetic separation |
| ISSN号 | 1018-4619 |
| 中文摘要 | Although nano-adsorbents often show better adsorptive properties, they suffer from the difficulties to be separated from water. Magnetic separation is an efficient process to separate magnetic solids from water. It will be interesting to prepare magnetic nanoparticles as adsorbent for pollutant removal, which combines advantages of better adsorption capacity and easy separation using magnetic process. In this study, a novel nano magnetic adsorbent, Mn-doped maghemite, was developed. The prepared adsorbent can be separated efficiently using magnetic separation process. The adsorbent was characterized and the results showed that the nano-adsorbent with a high specific surface area (133.9m(2)/g) was part amorphous. Iron and manganese existed mainly in the oxidation state of +III and +square, respectively. The adsorbent showed excellent adsorption towards As(V) and As(III) and they showed significantly higher adsorption capacity for As(III) than As(V). The adsorption fits Langmuir isotherm well and the calculated As(V) and As(III) maximum adsorption capacity was 14.97 mg/g and 22.59 mg/g respectively, at pH 7.0. Coexisting ions have different kinds of effects on arsenic removal. Phosphate was the greatest competitor with arsenic for adsorptive sites on the adsorbent, while Ca2+, Mg2+ enhanced the adsorption capacity of the adsorbent for As(V). |
| WOS记录号 | WOS:000333072400003 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9597]  |
| 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 | Yu, Lian. REMOVAL OF As (V) AND As(III) FROM WATER USING Mn-DOPED MAGHEMITE NANOPARTICLES[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2014,23(2A):508-515. |
| APA | Yu, Lian.(2014).REMOVAL OF As (V) AND As(III) FROM WATER USING Mn-DOPED MAGHEMITE NANOPARTICLES.FRESENIUS ENVIRONMENTAL BULLETIN,23(2A),508-515. |
| MLA | Yu, Lian."REMOVAL OF As (V) AND As(III) FROM WATER USING Mn-DOPED MAGHEMITE NANOPARTICLES".FRESENIUS ENVIRONMENTAL BULLETIN 23.2A(2014):508-515. |
入库方式： OAI收割
来源：生态环境研究中心
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