Arsenate removal from aqueous solutions using modified red mud
文献类型：期刊论文
| 作者 | Zhang, Shuwu ; Liu, Changjun ; Luan, Zhaokun ; Peng, Xianjia ; Ren, Haijing ; Wang, Jun |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 152期号:2页码:486-492 |
| 关键词 | red mud modified red mud arsenate adsorption langmuir isotherm freundlich isotherm |
| 英文摘要 | Red mud (RM), a waste tailing from alumina production, was modified with FeCl3 for the removal of arsenate from water. The RM and modified red mud (MRM) were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD) microanalysis. Adsorption of arsenate on modified red mud (MRM) was studied as a function of time, pH, and coexisting ions. Equilibrium time for arsenate removal was 24 h. Solution pH significantly affected the adsorption, and the adsorption capacity increased with the decrease in pH. Langmuir and Freundlich isotherms equation were used to fit the adsorption isotherms. The Langmuir isotherm was the best-fit adsorption isotherm model for the experimental data. Adsorption capacity of MRM was found to be 68.5 mg/g, 50.6 mg/g and 23.2 mg/g at pH 6, 7 and 9, respectively. NO3- had little effect on the adsorption. Ca2+ enhanced the adsorption, while HCo3- decreased the adsorption. MRM could be regenerated with NaOH, and the regeneration efficiency reached 92.1% when the concentration of NaOH was 0.2 mol/L. (c) 2007 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000254765100005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22207]  |
| 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 | Zhang, Shuwu,Liu, Changjun,Luan, Zhaokun,et al. Arsenate removal from aqueous solutions using modified red mud[J]. JOURNAL OF HAZARDOUS MATERIALS,2008,152(2):486-492. |
| APA | Zhang, Shuwu,Liu, Changjun,Luan, Zhaokun,Peng, Xianjia,Ren, Haijing,&Wang, Jun.(2008).Arsenate removal from aqueous solutions using modified red mud.JOURNAL OF HAZARDOUS MATERIALS,152(2),486-492. |
| MLA | Zhang, Shuwu,et al."Arsenate removal from aqueous solutions using modified red mud".JOURNAL OF HAZARDOUS MATERIALS 152.2(2008):486-492. |
入库方式： OAI收割
来源：生态环境研究中心
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