Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Chemical cleaning of ultrafiltration membranes for polymer-flooding wastewater treatment: Efficiency and molecular mechanisms | |
| Liu, GC; Li, L; Qiu, LP; Yu, SL; Liu, P; Zhu, YB; Hu, J; Liu, ZY; Zhao, DS; Yang, HJ | |
| 2018 | |
| 发表期刊 | JOURNAL OF MEMBRANE SCIENCE
 |
| ISSN | 0376-7388 |
| 卷号 | 545页码:348-357 |
| 文章类型 | 期刊论文 |
| 摘要 | In a polymer-flooding wastewater treatment process, physically irreversible fouling of ultrafiltration (UF) membranes is severe and inevitable. Particularly, anionic polyacrylamide (APAM) aggravated flux loss is a challenge in flux recovery. Chemical cleaning procedures for polyvinylidene fluoride (PVDF) UF membranes fouled by polymers (e.g., APAM) were designed by investigating their cleaning efficiency, synergistic effect and molecular interactions based on the molecular mechanisms of polymeric fouling. The cleaning efficiency and foulant-foulant intermolecular interactions indicated that the destruction of the hydrogen-bonded network, egg-box shaped gel network, and interpenetrating polymer network using sodium hypochlorite (NaClO), ethylenediaminetetraacetic acid (EDTA) and dodecyl trimethyl ammonium chloride (DTAC) solutions, respectively, led to significant flux recovery. The synergistic relationships between the two types of cleaning reagents were different in the mixed solutions and sequential procedures. In addition, oil emulsions facilitated the removal of APAM and slowed the flux loss. Finally, the flux recoveries and operational aspects in the pilot-scale UF experiments indicated that integration of the tested chemical cleaning procedures can efficiently remove membrane foulants and significantly restore membrane flux during polymer-flooding wastewater treatment of UF processes. These results are promising for controlling membrane fouling due to polymeric foulants. |
| 关键词 | Critical Micelle Concentration Response-surface Methodology Afm Force Spectroscopy Nanofiltration Membranes Sodium-hypochlorite Fouled Membranes Ptfe Surface Uf Membranes Optimization Temperature |
| DOI | 10.1016/j.memsci.2017.08.062 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000413270200040 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.sinap.ac.cn/handle/331007/28940 |
| 专题 | 中科院上海应用物理研究所2011-2018年 |
| 作者单位 | 1.Liu, GC 2.Li, L 3.Qiu, LP 4.Yu, SL 5.Liu, P 6.Zhu, YB 7.Hu, J 8.Liu, ZY 9.Zhao, DS 10.Yang, HJ |
| 推荐引用方式 GB/T 7714 | Liu, GC,Li, L,Qiu, LP,et al. Chemical cleaning of ultrafiltration membranes for polymer-flooding wastewater treatment: Efficiency and molecular mechanisms[J]. JOURNAL OF MEMBRANE SCIENCE,2018,545:348-357. |
| APA | Liu, GC.,Li, L.,Qiu, LP.,Yu, SL.,Liu, P.,...&Yang, HJ.(2018).Chemical cleaning of ultrafiltration membranes for polymer-flooding wastewater treatment: Efficiency and molecular mechanisms.JOURNAL OF MEMBRANE SCIENCE,545,348-357. |
| MLA | Liu, GC,et al."Chemical cleaning of ultrafiltration membranes for polymer-flooding wastewater treatment: Efficiency and molecular mechanisms".JOURNAL OF MEMBRANE SCIENCE 545(2018):348-357. |
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