Modification of ultrafiltration membrane with iron/aluminum mixed hydrolyzed precipitate layer for humic acid fouling reduction
文献类型：期刊论文
| 作者 | Xie, Yiruiwen; Liu, Huijuan; Zhang, Xuehong; Qu, Jiuhui; Ma, Baiwen |
| 刊名 | DESALINATION AND WATER TREATMENT
 |
| 出版日期 | 2016-11 |
| 卷号 | 57期号:54页码:26022-26030 |
| 关键词 | Ultrafiltration Humic Acid Fouling Reduction Iron Aluminum Mixed Flocs Pre-deposition |
| DOI | 10.1080/19443994.2016.1159991 |
| 英文摘要 | Iron/aluminum mixed flocs were pre-deposited onto an ultrafiltration (UF) membrane surface to test their antifouling properties in the presence of humic acid (HA). Membranes modified with higher aluminum mole ratios in the mixture were more effective in controlling membrane fouling. Relatively strong adhesion was observed between the mixed flocs and the UF membrane used. The differences in the structure of the deposited layer were an important contributing factor for antifouling properties, which was significantly influenced by solution pH. Scanning electron microscopy showed that dense deposition layers were formed by small flocs at pH 6.0, while loose deposition layers were formed by large flocs at pH 8.0. Atomic force microscopy showed that the surface roughness of the deposition layer was much larger at pH 6.0 than that at pH 8.0. The corresponding positive charge of the mixed flocs was also higher at pH 6.0, resulting in stronger adsorption ability to the negatively charged HA molecules. These factors reduced the amount of HA getting to the membrane surface and thus helped increase membrane flux at lower pH values. In addition, HA molecules with various molecular weights were removed much faster at pH 6.0 than at pH 8.0. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36199]  |
| 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 | Xie, Yiruiwen,Liu, Huijuan,Zhang, Xuehong,et al. Modification of ultrafiltration membrane with iron/aluminum mixed hydrolyzed precipitate layer for humic acid fouling reduction[J]. DESALINATION AND WATER TREATMENT,2016,57(54):26022-26030. |
| APA | Xie, Yiruiwen,Liu, Huijuan,Zhang, Xuehong,Qu, Jiuhui,&Ma, Baiwen.(2016).Modification of ultrafiltration membrane with iron/aluminum mixed hydrolyzed precipitate layer for humic acid fouling reduction.DESALINATION AND WATER TREATMENT,57(54),26022-26030. |
| MLA | Xie, Yiruiwen,et al."Modification of ultrafiltration membrane with iron/aluminum mixed hydrolyzed precipitate layer for humic acid fouling reduction".DESALINATION AND WATER TREATMENT 57.54(2016):26022-26030. |
入库方式： OAI收割
来源：生态环境研究中心
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