In situ generated micro-bubbles enhanced membrane antifouling for separation of oil-in-water emulsion
In situ generated micro-bubbles enhanced membrane antifouling for separation of oil-in-water emulsion
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原位产生微气泡增强膜防污用于水包油乳液分离
DOI：
10.1016/j.memsci.2020.119005
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发表时间：
2021-03
影响因子：
9.5
通讯作者：
Liu Fu
中科院分区：
文献类型：
--
作者：
Wang Yang;Wang Jianqiang;Ding Yajie;Zhou Shouyong;Liu Fu
膜污染一直被认为是膜分离过程中最大的挑战，尤其是在油水分离过程中。减少膜污染的新策略对于膜分离是非常重要的。提出了一种利用原位生成微气泡的膜分离方法。通过膜分离和催化反应相结合的方法实现了膜的减垢过程。在负载于碳化PAN（cPAN）纳米纤维膜表面的氧化锰纳米颗粒的催化下，过氧化氢（H2 O2）分解原位产生氧气微泡。原位生成的微气泡通过微气泡与油品之间的疏水相互作用，显著抑制了废油的表面沉积。在连续65分钟的水包油分离后，膜渗透率显著降低至909 ± 286 Lm−2h−1bar−1（其初始数据的3%）。然而，在H2O2的存在下，它仍然高达14755 ± 1930 Lm−2h−1bar−1（初始数据的67.6%），高出16.2倍。本研究为实现连续油水乳状液分离和减少膜污染提供了一种潜在的途径，并推动了膜在油水分离中的实际应用。
Membrane fouling has been considered as the greatest challenge for membrane separation especially in oil/water separation process. Novel strategies for reducing membrane fouling are highly important for membrane separation. In this study, a novel membrane antifouling method in oil/water separation was proposed through in situ generated micro-bubbles. The fouling reduced process was realized by combination of membrane separation and catalytic reaction. Oxygen micro-bubbles were in situ generated by the decomposition of hydrogen peroxide (H2O2) under the catalysis of manganese oxide nanoparticles, which were loaded on the surface of carbonized PAN (cPAN) nanofibrous membrane. In situ generated micro-bubbles significantly inhibited the surface deposition of rejected oils through hydrophobic interaction between micro-bubbles and oils. Membrane permeability was significantly reduced to 909 ± 286 Lm−2h−1bar−1(3% of its initial data) after 65 min of continuous oil-in-water separation. However, it remains as high as 14755 ± 1930 Lm−2h−1bar−1(67.6% of initial data) with the presence of H2O2, which was 16.2 times higher. The current study presents a potential approach to achieve continuous oil/water emulsion separation with reduced membrane fouling and advance the practical application of membranes for oil/water separation.
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影响因子：
22.1
作者：
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通讯作者：
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影响因子：
10.9
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一种具有稳定通量的高效油水乳液分离自清洁异质结构膜
影响因子：
29.4
作者：
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