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Surface modification of piperazine-based nanofiltration membranes with serinol for enhanced antifouling properties in polymer flooding produced water treatment

机译:基于哌嗪基纳滤膜的表面改性钠素加强聚合物洪水防污性能生产水处理

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摘要

In order to deal with the membrane fouling problem when treating the polymer flooding produced water (PFPW) with a typical thin film composite (TFC) nanofiltration (NF) membrane, a facile and effective serinol surface modification method has been introduced in this study, which is based on the membrane fouling mechanism proposed in our previous research. Serinol molecules were grafted on the nascent piperazine-based PA-TFC membrane through the acylation reaction between the serinol molecule's amino group and the nascent membrane's residual acyl chloride group. A series of characterizations indicated that this modification process could enhance membrane hydrophilicity and decrease the surface carboxyl density without changing the membrane's morphology. Compared with the unmodified PA-TFC membrane, the serinol-grafted PA-TFC membrane had higher water permeability, stronger antifouling ability and equivalent solute rejection, which would be rather meaningful for improving membrane performance when treating PFPW.
机译:为了在用典型的薄膜复合物(TFC)纳米过滤(NF)膜处理聚合物驱产生的水(PFPW)时处理膜污染问题,本研究介绍了容易和有效的钠纤维表面改性方法,这基于我们以前的研究中提出的膜污垢机制。通过钠分子的氨基和新生膜的残余酰氯基团之间的酰化反应在新生哌嗪基PA-TFC膜上接枝钠分子。一系列特征表明该修饰过程可以增强膜亲水性并降低表面羧基密度而不改变膜的形态。与未经修改的PA-TFC膜相比,钠植物接枝的PA-TFC膜具有较高的水渗透性,更强的防污能力和等同的溶质排斥,这对于在处理PFPW时改善膜性能是相当有意义的。

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  • 来源
    《RSC Advances》 |2017年第77期|共9页
  • 作者单位

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Sanming Univ Sch Architectural Engn Sanming 365004 Peoples R China;

    Northeast Elect Power Univ Sch Chem Engn Jilin 132012 Jilin Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Urban Water Resource &

    Environm Sch Municipal &

    Environm Engn Harbin 150090 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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