高负载氧化铝复合膜的制备及其油水分离性能  被引量:1

Preparation of high loaded alumina composite membrane and its oil-water separation performance

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作  者:刘海辉[1] 李广超 龚耿浩 LIU Haihui;LI Guangchao;GONG Genghao(School of Material Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China)

机构地区:[1]天津工业大学材料科学与工程学院,天津300387 [2]天津工业大学省部共建分离膜与膜过程重点实验室,天津300387

出  处:《天津工业大学学报》2023年第4期21-27,共7页Journal of Tiangong University

基  金:天津市科技计划项目(20ZYJDJC00100)。

摘  要:为提升聚砜膜的亲水性与抗油污染性能,采用共混亲水性无机纳米粒子——氧化铝的方式对其进行改性。通过非溶剂诱导致相转化法制得Al2O3/PSF复合膜,系统研究氧化铝与聚砜的质量比对铸膜液黏度、膜结构、孔隙率、力学性能、膜渗透性能和油水分离性能的影响。结果表明:当氧化铝与聚砜的质量比为7:1时,膜的孔隙率为78.04%,水接触角为37°,纯水通量达到最高的1500 L/(m^(2)·h·bar)(1 bar=100 kPa),油水乳液的渗透通量为320 L/(m^(2)·h·bar),并且除油率高于99%。与改性前相比,该膜展现了优异的油水分离性能。In order to improve the hydrophilicity and oil-fouling resistance of polysulfone membrane,it was modified by blending hydrophilic inorganic nanoparticles-alumina.Al2O3/PSF composite membranes were prepared by non-solvent induced phase inversion method.The effects of the mass ratio of alumina to polysulfone on the viscosity of the casting solution,membrane structure,porosity,mechanical properties,membrane permeability,and oil-water separation performance were systematically studied.The results show that when the mass ratio of alumina to polysulfone is 7∶1,the porosity of the membrane is 78.04%,the water contact angle is 37°,and the pure water flux reaches the highest 1500 L/(m^(2)·h·bar)(1 bar=100 kPa),the permeation flux of the oil-water emulsion is 320 L/(m^(2)·h·bar),and the oil rejection rate is higher than 99%.Compared with the membrane before modifica-tion,the membrane exhibites excellent oil-water separation performance.

关 键 词:共混改性 高负载氧化铝复合膜 聚砜 非溶剂致相分离 油水乳液分离 

分 类 号:TQ028[化学工程]

 

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