SiO_2/PDMS/PVDF复合膜渗透蒸发回收煤化工废水中酚

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英文篇名：Pervaporation Process with SiO_2/PDMS/PVDF Composite Membrane for the Recycle of Phenol from Coal Chemical Wastewater 作者：姚杰 ; 李道玉 ; 刘帅 ; 孙浩 ; 李丹 ; 韩帮军 英文作者：YAO Jie;LI Daoyu;LIU Shuai;SUN Hao;LI Dan;HAN Bangjun;School of Municipal and Environmental Engineering,Harbin Institute of Technology;National Engineering Center of Urban Water Resources;School of Civil Engineering,Heilongjiang University; 关键词：中空纤维复合膜 ; Si ; O2/PDMS/PVDF ; 煤气化含酚废水 ; 动态负压涂覆 ; 渗透蒸发 英文关键词：hollow fiber composite membranes;;Si O2/PDMS/PVDF;;coal gasification wastewater containing phenols;;dynamic negative pressure method;;pervaporation;;phenol 中文刊名：SCLJ 英文刊名：Technology of Water Treatment 机构：哈尔滨工业大学市政环境工程学院;城市水资源开发利用(北方)国家工程研究中心;黑龙江大学建筑工程学院; 出版日期：2017-03-01 16:21 出版单位：水处理技术 年：2017 期：v.43;No.301 基金：基金项目:中-荷研发计划关于工业废水、水回用、零排放技术的研究(SDRP-WRZ) 语种：中文; 页：SCLJ201702019 页数：5 CN：02 ISSN：33-1127/P 分类号：90-94

摘要

采用PVDF中空纤维为基膜,以Si O_2填充PDMS溶液为涂覆液,进行动态负压涂覆,制备Si O_2/PDMS/PVDF复合膜材料,回收处理煤化工废水中的酚。通过扫描电镜(SEM)、能量弥散X射线能谱仪(EDS)及接触角测试仪对Si O_2/PDMS/PVDF复合膜材料进行了表征,并研究了Si O_2质量浓度、涂覆时间对Si O_2/PDMS/PVDF复合膜材料渗透蒸发性能的影响。当Si O_2填充质量浓度占PDMS质量浓度的12%,涂覆时间60 min条件下,制得的Si O_2/PDMS/PVDF复合膜具有最佳的渗透蒸发性能。保持进水温度50℃,膜后压力50 k Pa,进水流速10 L/h,酚通量达到7.16 g/(m~2·h),分离因子为4.26。
        Si O_2/PDMS/PVDFcomposite membraneswere prepared on PVDF hollow fiber membranes by coating a layer of PDMS solution, and filled with Si O_2 through dynamic negative pressure method in order to treat and recover phenol from coal chemical industry wastewater. Energy dispersive spectrometer(EDS), scanning electron microscope(SEM) and Contact angle instrument were used to characterize Si O_2/PDMS/PVDF composite membranes. The effect of Si O_2 mass concentration and coating time on structure and property of composite membranes were investigated. The composite membranes expressed the best pervaporation performance, when the Si O_2 mass concentration was 12% and the coating time was 60 min.When the water temperature,flow rate,pressure under membrane were 50℃, 10 L/h and 50 k Pa respectively, the phenol flux reached 7.16 g/(m2·h), and separation factor reached 4.26.

引文

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