| Effect of speciation transformation on the coagulation behavior of Al-13 and Al-13 aggregates | |
| Wu, Xiaohong1; Ye, Changqing2; Wang, Dongsheng1; Ge, Xiaopeng1; Tang, Hongxiao1 | |
| 发表期刊 | WATER SCIENCE AND TECHNOLOGY
 |
| ISSN | 0273-1223 |
| 2009 | |
| 卷号 | 59期号:4页码:815-822 |
| 关键词 | Adsorption Al-13 Al-13 Aggregates Coagulation |
| 产权排序 | Chinese Acad Sci, RCEES, State Key Lab Environm Aquat Chem;Chinese Acad Sci, RCEES, Yantai Inst Coastal Zone Res Sustainable Dev |
| 通讯作者 | Wu, XH, Chinese Acad Sci, RCEES, State Key Lab Environm Aquat Chem, POB 2871, Beijing 100085, Peoples R China |
| 作者部门 | 污染过程与控制实验室 |
| 英文摘要 | Flocculation of kaolin suspension with aluminium fractal polycations was investigated as a function of aluminium concentration and pH. Aluminium flocculants included Al-13 and Al-13 aggregates with OH/Al ratio of 2.6 and 2.8, respectively. The flocculation kinetics and floc size distribution were monitored by light scattering. The characterization of flocculants showed that the tridecatmer Al-13 and bridged [Al-13](n) with out-sphere structure were the dominant species for all flocculants in a wide pH range. The coagulation results indicated that the pre and in situ-formed [Al-13](n) play a key role in removing particles. With the increasing concentration of [Al-13](n), coagulation mechanisms were transformed from charge-neutralization, electro-patch coagulation to bridge-aggregation. Moreover, sweep-flocculation was involved at higher dosage besides other three mechanisms when amorphous aluminium oxides formed. Hence, chemical interaction between particles and flocculants evolved from surface adsorption to surface precipitation for aluminium polycations by virtue of species transformation. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China (NSFC) [20537020, 50678167, 20677073] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | PROMOTED DECOMPOSITION ; ALUMINUM SALTS ; MECHANISM ; POLYCATIONS ; CHEMISTRY ; POLYMER ; SILICA ; MODEL ; FLOCCULATION ; HYDROLYSIS |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| WOS记录号 | WOS:000263933200023 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3526 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, RCEES, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Chinese Acad Sci, RCEES, Yantai Inst Coastal Zone Res Sustainable Dev, Yantan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xiaohong,Ye, Changqing,Wang, Dongsheng,et al. Effect of speciation transformation on the coagulation behavior of Al-13 and Al-13 aggregates[J]. WATER SCIENCE AND TECHNOLOGY,2009,59(4):815-822. |
| APA | Wu, Xiaohong,Ye, Changqing,Wang, Dongsheng,Ge, Xiaopeng,&Tang, Hongxiao.(2009).Effect of speciation transformation on the coagulation behavior of Al-13 and Al-13 aggregates.WATER SCIENCE AND TECHNOLOGY,59(4),815-822. |
| MLA | Wu, Xiaohong,et al."Effect of speciation transformation on the coagulation behavior of Al-13 and Al-13 aggregates".WATER SCIENCE AND TECHNOLOGY 59.4(2009):815-822. |
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