Shah Aatif Ali, Yoo Youngmin, Park Ahrumi, Cho Young Hoon, Park You-In, Park Hosik
Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea.
Department of Green Chemistry and Environmental Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea.
Membranes (Basel). 2022 Mar 31;12(4):382. doi: 10.3390/membranes12040382.
Fabrication of highly efficient oil/water separation membranes is attractive and challenging work for the actual application of the membranes in the treatment of oily wastewater and cleaning up oil spills/oil leakage accidents. In this study, hydrophilic poly(ethylene-co-polyvinyl alcohol) (EVOH) nanofiber membranes were made using an electrospinning technique for oil/water separation. The as-prepared EVOH electrospun nanofiber membranes (ENMs) exhibited a super-hydrophilic property (water contact angle 33.74°) without further treatment. As prepared, ENMs can provide continuous separation of surfactant-free and surfactant-stabilized water-in-oil emulsions with high efficiency (i.e., flux 8200 L m−2 h−1 (LMH), separation efficiency: >99.9%). In addition, their high stability (i.e., reusable, mechanically robust) would broaden the conditions under which they can be employed in the real field oil/water separation applications. Various characterization techniques (including morphology investigation, pore size, porosity, mechanical properties, and performance test) for gravity-driven oil/water separation were employed to evaluate the newly prepared EVOH ENMs.
制备高效的油/水分离膜对于膜在含油废水处理以及清理漏油/石油泄漏事故中的实际应用而言，是一项具有吸引力且颇具挑战性的工作。在本研究中，采用静电纺丝技术制备了用于油/水分离的亲水性聚（乙烯-共-聚乙烯醇）（EVOH）纳米纤维膜。所制备的EVOH静电纺纳米纤维膜（ENMs）未经进一步处理便展现出超亲水性（水接触角为33.74°）。制备好的ENMs能够高效地连续分离不含表面活性剂和含表面活性剂稳定的油包水乳液（即通量为8200 L m−2 h−1（LMH），分离效率：>99.9%）。此外，它们的高稳定性（即可重复使用、机械强度高）将拓宽其在实际现场油/水分离应用中的使用条件。采用了各种表征技术（包括形态学研究、孔径、孔隙率、机械性能和重力驱动油/水分离性能测试）来评估新制备的EVOH ENMs。
