Investigation of cleaning strategies for an antifouling thin-film composite forward osmosis membrane for treatment of polymer-flooding produced water
Investigation of cleaning strategies for an antifouling thin-film composite forward osmosis membrane for treatment of polymer-flooding produced water
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聚合物驱采出水防污薄膜复合正渗透膜清洗策略研究
DOI：
10.1021/acs.iecr.8b05194
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发表时间：
2019
影响因子：
4.2
通讯作者：
Matsuyama Hideto
中科院分区：
文献类型：
--
作者：
Zhang Xinyu;Gao Shanshan;Tian Jiayu;Shan Sujie;Takagi Ryosuke;Cui Fuyi;Bai Langming;Matsuyama Hideto
研究了两性离子聚磺基甜菜碱甲基丙烯酸酯刷功能化薄膜复合膜（TFC-PSBMA膜）对聚合物驱采出水（PFPW）的长期正渗透（FO）处理的优化清洗策略。以原油和阴离子聚丙烯酰胺（APAM）为代表有机物，对污水进行了处理。结果表明，随着进料溶液中原油相对浓度的增加，不可逆污垢明显加剧，原油是主要的污垢。然后，分别研究了去离子水清洗、NaCl渗透反冲洗、酸化学清洗、碱化学清洗和表面活性剂清洗五种清洗方案。结果表明，十二烷基苯磺酸钠（SDBS）化学清洗是去除膜表面污垢的最有效方法。同时，PSBMA刷接枝在膜上表现出优异的耐受性所造成的SDBS的化学应力，但不NaOH。
An optimized cleaning strategy of a thin-film composite membrane functionalized with zwitterionic poly(sulfobetaine methacrylate) brushes (TFC-PSBMA membrane) was investigated for a long-term forward osmosis (FO) treatment of polymer-flooding produced water (PFPW). Crude oil and anionic polyacrylamide (APAM) were used as the representative organic substances in the wastewater. The results showed that irreversible fouling was significantly aggravated by increasing the relative concentration of crude oil in the feed solution revealing it to be the major foulant. Then, five cleaning protocols were investigated such as deionized water washing, NaCl osmotic backwashing, chemical washing with acid, alkali, and surfactant cleaning, respectively. As the result, it was found that chemical cleaning with sodium dodecyl benzenesulfonate (SDBS) was the most effective method for removing foulants from the membrane surfaces. Meanwhile, PSBMA brushes grafted on the membrane exhibited excellent tolerance to the chemical stress caused by SDBS but not to NaOH.