Effect of speciation transformation on the coagulation behavior of Al-13 and Al-13 aggregates
文献类型：期刊论文
| 作者 | Wu, Xiaohong1; Ye, Changqing2; Wang, Dongsheng1; Ge, Xiaopeng1; Tang, Hongxiao1 |
| 刊名 | WATER SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2009 |
| 卷号 | 59期号:4页码:815-822 |
| 关键词 | Adsorption Al-13 Al-13 Aggregates Coagulation |
| ISSN号 | 0273-1223 |
| 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 |
| 文献子类 | Article |
| 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. |
| 学科主题 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| URL标识 | 查看原文 |
| WOS关键词 | PROMOTED DECOMPOSITION ; ALUMINUM SALTS ; MECHANISM ; POLYCATIONS ; CHEMISTRY ; POLYMER ; SILICA ; MODEL ; FLOCCULATION ; HYDROLYSIS |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000263933200023 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [20537020, 50678167, 20677073] |
| 公开日期 | 2011-07-05 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/3527]  |
| 专题 | 烟台海岸带研究所_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. |
入库方式： OAI收割
来源：烟台海岸带研究所
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