The characteristics of flocs and zeta potential in nano-TiO2 system under different coagulation conditions
文献类型：期刊论文
| 作者 | Xu, H. ; Jiang, W. ; Xiao, F. ; Wang, D. S. |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2014 |
| 卷号 | 452期号:1页码:181-188 |
| 关键词 | Coagulation Nano TiO2 Nano Al2O3 Breakage Fractal dimension |
| ISSN号 | 0927-7757 |
| 中文摘要 | Three coagulants were used to investigate the characteristics of flocs formed in TiO2 system, and the effects of humic acid (HA) on the coagulation process were also investigated. The results indicated that flocs could not regrow to former size in all coagulation conditions. The floc sizes after re-growth decreased with increasing the breakage period. Polyacrylamide (PAM) could significantly increase the floc size, and the fractal dimension decreased with increasing the concentration of N-PAM. Zeta potentials of flocs formed without N-PAM as coagulant decreased when the flocs were broken at 400 rpm. Zeta potential using N-PAM as flocculant did not significantly change during breakage period, and this maybe caused by the adsorption of N-PAM molecules on new exposed TiO2 surfaces. The results of coagulation process using nano-Al2O3 + AS as coagulant showed that nano-Al2O3 particles could increase the floc size and fractal dimension in TiO2 system, and the recovery factor was larger than only using AS. The further addition of Ca2+ and Al2O3 particles could enhance the floc size after regrowth. In the enhanced coagulation process (Al 1.0 mmol/L), PACI could produce larger flocs due to electrostatic patch effects. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000336708100026 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9608]  |
| 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 | Xu, H.,Jiang, W.,Xiao, F.,et al. The characteristics of flocs and zeta potential in nano-TiO2 system under different coagulation conditions[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2014,452(1):181-188. |
| APA | Xu, H.,Jiang, W.,Xiao, F.,&Wang, D. S..(2014).The characteristics of flocs and zeta potential in nano-TiO2 system under different coagulation conditions.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,452(1),181-188. |
| MLA | Xu, H.,et al."The characteristics of flocs and zeta potential in nano-TiO2 system under different coagulation conditions".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 452.1(2014):181-188. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。