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Composite membrane of polyacrylonitrile and spent alkaline battery powder for filtration of oil-in-water emulsions
Microporous and Mesoporous Materials ( IF 4.8 ) Pub Date : 2020-01-14 , DOI: 10.1016/j.micromeso.2020.110026
Hem Prakash Karki , Laxmi Kafle , Han Joo Kim

Spent alkaline battery powder representing as a mixture of metal oxides was applied to the polyacrylonitrile (PAN) template to convert the hydrophobic PAN membrane to hydrophilic. The interaction between the metal oxides on the resulting composite membrane and water molecules is sufficiently strong to allow instant passage of water through the membrane. Hence, this application should improve the oil-in-water emulsion filtration technique. A simple electrospinning technique was employed to fabricate the novel composite membrane of polyacrylonitrile matrix and spent alkaline battery powder under normal conditions. Surfactant-free oil-in-water emulsions were prepared using four common organic oils: n-hexane, toluene, gasoline, and diesel in the oil/water ratio of 3:7 v/v. Filtration processes were carried out under the gravity alone. The spent alkaline battery powder showed the physical interaction with PAN polymer fiber forming the superhydrophilic composite membrane. A membrane with higher amount of battery powder (1sBAT/PAN) showed about 2.1 times the water permeation flux for toluene in water emulsion compared to the membrane containing less amount of battery powder (0.5sBAT/PAN). The combination of waste battery powder with PAN polymer fiber is a useful technique for the oil separation technology.



中文翻译:

聚丙烯腈和废碱性电池粉末的复合膜,用于水包油乳液的过滤

将表示为金属氧化物混合物的用过的碱性电池粉末涂到聚丙烯腈(PAN)模板上,以将疏水性PAN膜转化为亲水性的。所得复合膜上的金属氧化物与水分子之间的相互作用足够强,以允许水立即通过膜。因此,该应用应改进水包油乳液过滤技术。在正常条件下,采用一种简单的静电纺丝技术制备了聚丙烯腈基体和废碱性电池粉末的新型复合膜。使用四种常见有机油类制备表面活性剂的无油包水乳液:油/水比例为3:7 v / v的己烷,甲苯,汽油和柴油。过滤过程仅在重力作用下进行。废碱性电池粉末显示出与PAN聚合物纤维的物理相互作用,从而形成了超亲水性复合膜。与含有较少量电池粉(0.5sBAT / PAN)的膜相比,含有较高电池粉末(1sBAT / PAN)的膜显示出的甲苯在水乳液中的水渗透通量约为2.1倍。废电池粉与PAN聚合物纤维的结合是一种用于油分离技术的有用技术。

更新日期:2020-01-15
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