超亲水超疏油导电碳膜的制备及其油水分离性能  

Preparation of super hydrophilic and super oleophobic conductive carbon membrane and its oil-water separation performance

作　　者：赵冀宁 刘子豪 赵智龙 魏伟 吴静[3] 张朝晖[3] ZHAO Jining;LIU Zihao;ZHAO Zhilong;WEI Wei;WU Jing;ZHANG Zhaohui(Ultra-High Voltage Branch of State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;Aikeweier(Tianjin)Technology Co.,Ltd.,Tianjin 300384,China;School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]国网河北省电力有限公司超高压分公司,石家庄050000 [2]艾科维尔(天津)科技有限公司,天津300384 [3]天津工业大学环境科学与工程学院,天津300387

出　　处：《天津工业大学学报》2025年第1期1-7,共7页Journal of Tiangong University

基　　金：国家电网有限公司科技项目(kj2022-055);天津市科技计划项目(22JCYBJC01510)。

摘　　要：为了改善膜分离工艺在用于含油废水处理过程中通量低、连续运行稳定性差的难题,采用“静电纺—预氧化—碳化”工艺制备超亲水、水下超疏油的纳米纤维导电碳膜,并研究该导电碳膜的油水分离性能。结果表明:导电碳膜做阴极,在-50 V/cm电压下过滤正己烷、大豆油和二氯甲烷3种油水乳液时,膜通量显著提高,分别比不加电时提高了57.6%、94.3%和53.4%;而且,膜通量衰减得到明显抑制,10周期连续过滤后,膜比通量衰减幅度比不加电时分别降低了9.2%、26%和16%。此外,与不加电时相比,导电碳膜对3种油水乳液的分离效率虽然只是略有提高,但分离效率的稳定性却显著增强,连续10周期过滤后,导电膜的油水分离效率始终稳定在99%左右。导电膜过滤工艺的产水效率和运行稳定性都比传统膜过滤工艺显著提高。To solve the problems of low flux and poor continuous operation stability during the treatment of oily wastewater by membrane separation process,a nanofiber conductive carbon membrane with super hydrophilic and super oleophobic underwater is prepared using the process of electrospinning pre-oxidation carbonization,and its oil-water separation performance is studied.The results show that when the conductive carbon membrane is used as cathode to filter n-hexane,soybean oil and dichloromethane emulsions at the voltage of-50 V/cm,the membrane flux is significantly increased by 57.6%,94.3%and 53.4%,respectively,compared with that without electricity.Moreover,the decline of membrane flux is significantly inhibited.After 10-cycle filtration,the attenuation of membrane specific flux decreases by 9.2%,26%and 16%,respectively,compared with that without power-on.In addition,although the separation efficiency of the three oil-water emulsions by conductive carbon membrane is only slightly improved compared with that without power-on,its stability of oil-water separation efficiency is significantly enhanced.After 10 consecutive cycles of filtration,the oil-water separation efficiency of conductive carbon membrane is always maintained at approximately 99%.Therefore,the water production efficiency and operation stability of conductive membrane filtration process are significantly higher than those of conventional membrane filtration process.

关 键 词：油水分离 导电碳膜 膜污染 含油废水 超亲水超疏油 

分 类 号：TQ051.893[化学工程]