Enhanced fluoride adsorption using Al (III) modified calcium hydroxyapatite
文献类型：期刊论文
| 作者 | Nie, Yulun ; Hu, Chun ; Kong, Chuipeng |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2012 |
| 卷号 | 233页码:194－199 |
| 关键词 | Hydroxyapatite Aluminum Fluoride Adsorption Removal |
| ISSN号 | 0304-3894 |
| 中文摘要 | Aluminum-modified hydroxyapatite (Al-HAP) was prepared and characterized using XRD and BET analyses. Al-HAP possessed higher defluoridation capacity (DC) of 32.57 mgF(-)/g than unmodified hydroxyapatite (HAP) which showed a DC of 16.38 mgF(-)/g. The effect of Al/Ca atomic ratio in Al-HAP, solution pH and co-existing anions was further studied. The results indicated that the adsorption data could be well described by the Langmuir isotherm model and the adsorption kinetic followed the pseudo-second-order model. The pH changes during the adsorption process suggested that the -OH on the surface of Al-HAP was the adsorption sites. The more adsorption sites were formed on Al modified HAP, which possessed abundant surface hydroxyl groups, resulting in higher efficiency of F- removal. Thermodynamic parameters such as Delta G degrees, Delta H degrees and Delta S degrees were calculated in order to understand the nature of adsorption process. The results revealed that the adsorption reaction was a spontaneous and endothermic process. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000308277800025 |
| 公开日期 | 2014-11-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7803]  |
| 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 | Nie, Yulun,Hu, Chun,Kong, Chuipeng. Enhanced fluoride adsorption using Al (III) modified calcium hydroxyapatite[J]. JOURNAL OF HAZARDOUS MATERIALS,2012,233:194－199. |
| APA | Nie, Yulun,Hu, Chun,&Kong, Chuipeng.(2012).Enhanced fluoride adsorption using Al (III) modified calcium hydroxyapatite.JOURNAL OF HAZARDOUS MATERIALS,233,194－199. |
| MLA | Nie, Yulun,et al."Enhanced fluoride adsorption using Al (III) modified calcium hydroxyapatite".JOURNAL OF HAZARDOUS MATERIALS 233(2012):194－199. |
入库方式： OAI收割
来源：生态环境研究中心
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