膜科学与技术

In（Ⅲ）-MOF改性聚酰胺复合正渗透膜的制备及其耐污染性能研究

作者：韩雪笠，王铎，汪锰

单位：中国海洋大学化学化工学院，山东青岛 266100

关键词：正渗透膜；聚酰胺复合膜；In（Ⅲ）-MOF；膜污染

出版年,卷(期):页码： 2021,41(2):71-80

摘要：

在众多的改善正渗透复合膜性能的方法中，添加金属有机骨架（MOFs）材料形成聚酰胺复合膜是操作过程简单且膜性能提升程度较大的方法。本文首先将一定量的金属盐In(NO3)3·6H2O与三齿羧酸配体H3CTTA溶解于N，N-二甲基甲酰胺中，利用溶剂热法制备得到In（Ⅲ）-MOF晶体，即BUT-172；然后通过界面聚合方法将制备的MOF颗粒添加到聚酰胺活性分离层中，得到BUT-172改性的聚酰胺复合正渗透膜。并进一步研究了不同比例的BUT-172颗粒添加到油相溶液中对聚酰胺复合正渗透膜结构和性能的影响。结果表明，BUT-172颗粒的引入为水分子的扩散提供了额外的通道，使得改性聚酰胺复合正渗透膜的水通量获得了极大地提升，且当添加量为0.04wt% 时，改性膜在拥有较高水通量的同时具有低的盐水比。以腐殖酸进行的耐污染性研究表明，改性膜具有更好的耐污染性且污染后的膜通过简单清洗即可恢复性能。

Adding Metal-Organic Framework (MOFs) to form polyamide composite membrane is a simple process to improve the performance of forward osmosis membranes greatly. In this paper，a certain amount of the metal salt In(NO3)3·6H2O and tridentate carboxylic acid ligands H3CTTA was dissolved in N, N - dimethyl formamide to get In(Ⅲ)-MOF (BUT - 172) crystal by the solvothermal method；Then，the prepared MOF particles were added to the polyamide active separation layer by interfacial polymerization，and the modified TFC- FO membrane was obtained. In addition，the effects of different concentration of BUT-172 particles on the structure and properties were also studied. The results showed that the incorporation of BUT-172 particles provided additional channels for the diffusion of water molecules，which greatly improved the water flux of the modified TFC-FO membrane. Moreover，when the BUT-172 concentration was 0.04wt%，the modified membrane had a higher water flux and a lower salt water ratio. The study on pollution resistance of humic acid showed that the modified membrane had better pollution resistance and the performance of the polluted membrane can be recovered by simple cleaning.

韩雪笠（1995-），女，山东滨州人，在读硕士，从事功能膜材料的制备研究，联系电话：0532-66786513

参考文献：

[1]方彦彦,田野,王晓琳.正渗透的机理[J].膜科学与技术,2011,31(6):95-100.
[2]McCutcheon J R，McGinnis R L，Elimelech M. A Novel ammonia-carbon dioxide forward (direct) osmosis desalination process [J]. Desalination，2005，174：1-11.
[3]胡群辉,邹昊,姜莹,等.正渗透膜分离关键技术及其应用进展[J].膜科学与技术,2014,34(5):109-115.
[4]Holloway R W，Childress A E，Dennett K E，et al. Forward osmosis for concentration of anaerobic digester centrate[J]. Water Research，2007，41：4005-4014.
[5]李刚，李雪梅，柳越，王铎，何涛，高从堦. 正渗透原理及浓差极化现象[J]. 化学进展，2010，22（5）：812-821.
[6]Ma N，Wei J，Liao R H，et al. Zeolite-polyamide thin film nanocomposite membranes: Towards enhanced performance for forward osmosis[J]. Journal of Membrane Science，2012，405-406(7)：149-157.
[7]樊晋琼，苏燕，王铎. 二氧化钛/聚酰胺正渗透复合膜的制备与表征[J]. 水处理技术，2012，38（009）：43-46.
[8]Huang Y，Jin H，Yu P，et al. Polyamide thin-film composite membrane based on nano-silica modified polysulfone microporous support layer for forward osmosis [J]. Desalination Water Treatment， 2016，57(43)： 20177-20187.
[9]Wu X，Field R W，Wu J J，et al. Polyvinylpyrrolidone modified graphene oxide as a modifier for thin film composite forward osmosis membranes[J]. Journal of Membrane Science，2017，540：251-260.
[10]Zirehpour A，Rahimpour A，Ulbricht M. Nano-sized metal organic framework to improve the structural properties and desalination performance of thin film composite forward osmosis membrane[J]. Journal of Membrane Science，2017，531： 59-67.
[11]Tang C，Wang Z，Petrini? I，et al. Biomimetic aquaporin membranes coming of age[J]. Desalination，2015， 368：89-105.
[12]Li H，Eddaoudi M，O'Keeffe M，et al. Design and synthesis of an exceptionally stable and highly porous metalorganic framework[J]. Nature，1999，402 ( 6759 )：276 -279.
[13]Burtch N C，Jasuja H，Walton K S. Water Stability and Adsorption in Metal-Organic Frameworks [J]. Chemical Reviews，2014，114(20)：10575-10612.
[14]Zhong W B，Ru-Xia Li，Jie-Lv，He T，et al. Two isomeric In(III)-MOFs：unexpected stability difffference and selective flfluorescence detection of flfluoroquinolone antibiotics in water[J]. Inorganic Chemistry Frontiers，2020，7：1161–1171.
[15]He Y R，Tang Y P，Ma D C，et al. UiO-66 incorporated thin-fifilm nanocomposite membranes for efficient selenium and arsenic removal[J]. Journal of Membrane Science，2017，541：262-270.
[16]Xiao F，Xiao P，Zhang W J，et al. Identification of key factors affecting the organic fouling on low-pressure ultrafiltration membranes[J]. Journal of Membrane Science，2013，447（1）：144-152.
[17]Granik V T，Smith B R，Lee S C，et al. Osmotic pressures for binary solutions of non-electrolytes[J].Biomedical Microdevices，2002，4：309-321.
[18]Shah D，Kissick K，Ghorpade A，et al. Pervaporation of alcohol-water and dimethylformamide-water mixtures using hydrophilic zeolite NaA membranes: mechanisms and experimental results[J]. Journal of Membrane Science，2000，179(1)： 185-205.
[19]Dutta D，Bhattacharyya A，Ganguly B N. Microstructural study of aromatic polyamide membrane material[J]. Journal of Membrane Science，2003，224(1)： 127-135.
[20]Zhang D P，Yao Z C，Zhang H，et al.A novel strategy to fabricate thin film nanocompsite reverse osmosis membranes with enhanced desalination performance[J].Desalination and water treatment，2019,145:70-82.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com