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
ISSN0376-7388
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
DOI10.1016/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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