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Phosphate removal from aqueous solutions using raw and activated red mud and fly ash
文献类型：期刊论文
| 作者 | Li, Yanzhong; Liu, Changjun; Luan, Zhaokun; Peng, Xianjia; Zhu, Chunlei; Chen, Zhaoyang; Zhang, Zhongguo; Fan, Jinghua; Jia, Zhiping |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2006 |
| 卷号 | 137期号:1页码:374-383 |
| 关键词 | red mud fly ash phosphate sorption wastewater |
| 英文摘要 | The effect of acidification and heat treatment of raw red mud (RM) and fly ash (FA) on the sorption of phosphate was studied in parallel experiments. The result shows that a higher efficiency of phosphate removal was acquired by the activated samples than by the raw ones. The sample prepared by using the RM stirred with 0.25 M HCl for 2 It (RM0.25), as well as another sample prepared by heating the RM at 700 degrees C for 2 h (RM700), registered the maximum removal of phosphate (99% removal of phosphate). This occurred when they were used in the phosphate sorption studies conducted at pH 7.0 and 25 degrees C with the initial PO43- concentration of 155 mg P/l. The FA samples treated in the same way described above can achieve 7.0 and 8.2 mg P/l phosphate removal for FA0.25 and FA700 respectively, corresponding to 45.2% and 52.9% removal. The activated materials performed higher phosphate removal over broader pH range compared with the raw ones. The influences of various factors, such as initial pH and initial phosphate concentration on the sorption capacity were also studied in batch equilibration technique. Solution pH significantly influenced the sorption. Each sample achieved the maximal removal of phosphate at pH 7.0. The amount of phosphate removal increased with the solute concentration. The Freundlich and Langmuir models were used to simulate the sorption equilibrium. The results indicate that the Langmuir model has a better correlation with the experimental data than the Freundlich model. (c) 2006 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000240581300049 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23015]  |
| 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 | Li, Yanzhong,Liu, Changjun,Luan, Zhaokun,et al. Phosphate removal from aqueous solutions using raw and activated red mud and fly ash[J]. JOURNAL OF HAZARDOUS MATERIALS,2006,137(1):374-383. |
| APA | Li, Yanzhong.,Liu, Changjun.,Luan, Zhaokun.,Peng, Xianjia.,Zhu, Chunlei.,...&Jia, Zhiping.(2006).Phosphate removal from aqueous solutions using raw and activated red mud and fly ash.JOURNAL OF HAZARDOUS MATERIALS,137(1),374-383. |
| MLA | Li, Yanzhong,et al."Phosphate removal from aqueous solutions using raw and activated red mud and fly ash".JOURNAL OF HAZARDOUS MATERIALS 137.1(2006):374-383. |
入库方式： OAI收割
来源：生态环境研究中心
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