Speciation matching mechanisms between orthophosphate and aluminum species during advanced P removal process
文献类型：期刊论文
| 作者 | Qu, Jiuhu; Liu, Huijuan; Liu, Zhongtao; Hu, Chengzhi; Chen, Guixia; Ma, Baiwen |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018-11-15 |
| 卷号 | 642页码:1311-1319 |
| 关键词 | Coagulation Aluminum species Advanced P removal Speciation matching |
| ISSN号 | 0048-9697 |
| 文献子类 | Article |
| 英文摘要 | Aluminum (Al) salts are widely used as coagulants to remove phosphorus (P) in water treatment. However, the relationship between P and Al species and the underlying coagulation mechanisms is rarely studied. Currently, water eutrophication is a serious issue, and therefore advanced P removal is extremely necessary. Herein, the orthophosphate removal behavior of Al coagulants with various species distributions was investigated. The results showed that AlCl3 center dot 6H(2)O (AC) had a more pronounced P removal efficiency than polyaluminum chloride (PACI). Medium (Al-b or Al-13) and high polymeric species (Al-c) played a more significant role in removing P than monomeric species (Al-a). During coagulation, adsorption onto flocs was the dominant P removal mechanism, which could be categorized as multilayer adsorption. Although the adsorption kinetics showed that physical adsorption best described the adsorption mechanism for AC and PACl, it is worth noting that chemical adsorption also occurred during P removal by AC because of the formation of the AlPO4 precipitate. This could be because of the strong complex adsorption between the in situ Al-13 species and P. Based on the excellent P removal performance, we believe these findings will have a large potential for application in advanced P removal in water treatment. (C) 2018 Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41411]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Qu, Jiuhu,Liu, Huijuan,Liu, Zhongtao,et al. Speciation matching mechanisms between orthophosphate and aluminum species during advanced P removal process[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,642:1311-1319. |
| APA | Qu, Jiuhu,Liu, Huijuan,Liu, Zhongtao,Hu, Chengzhi,Chen, Guixia,&Ma, Baiwen.(2018).Speciation matching mechanisms between orthophosphate and aluminum species during advanced P removal process.SCIENCE OF THE TOTAL ENVIRONMENT,642,1311-1319. |
| MLA | Qu, Jiuhu,et al."Speciation matching mechanisms between orthophosphate and aluminum species during advanced P removal process".SCIENCE OF THE TOTAL ENVIRONMENT 642(2018):1311-1319. |
入库方式： OAI收割
来源：生态环境研究中心
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