海藻酸钙/聚丙烯无纺布复合过滤膜的制备及性能
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摘要
以聚丙烯(PP)无纺布为载体,不添加致孔剂制备了海藻酸钙/PP无纺布(CaAlg/PP)水凝胶复合过滤膜。通过SEM、TG对CaAlg/PP复合膜的表面形貌、热稳定性能进行表征。研究了CaAlg/PP复合膜的抗溶胀性能及其对染料吸附和染料截留的性能。结果表明,CaAlg/PP复合膜的抗溶胀性能比CaAlg水凝胶膜有很大提高。在0.1MPa压力下,NaCl浓度为1g·L-1时,料液通量为9.5L(m2·h)-1,对亮蓝的截留率达到98.3%。CaAlg/PP复合膜的耐压性能远优于CaAlg膜,经过Ca2+交联后可以多次重复使用。CaAlg/PP复合膜对阴离子染料的吸附量很小,避免了染料的吸附污染。CaAlg/PP复合膜可应用于染料中低浓度盐的脱除。
Polypropylene non-woven supported calcium alginate(CaAlg/PP)hydrogel composite filtration membranes were fabricated without porogen.The morphology,structure and thermal stability of the CaAlg/PP membranes were characterized by SEM and TG.The antiswelling property,dyes adsorption and dyes rejection properties of the CaAlg/PP membranes were researched.The results show that the antiswelling properties of CaAlg/PP membrane are greatly improved compared with free-standing CaAlg hydrogel filtration membrane.When the concentration of sodium chloride is 1 g·L-1,the flux of the CaAlg/PP membrane reaches 9.5 L(m2·h)-1 under 0.1 MPa and the rejection of brilliant blue is 98.3%.The pressure resistant performance of CaAlg/PP membrane is far better than CaAlg filtration membrane and can be reused multiple times after Ca2+cross-linking.The adsorption rate of anionic dyes is low,reducing the CaAlg/PP membrane fouling.The CaAlg/PP membrane can be used in dye desalination with a low salt concentration.
Polypropylene non-woven supported calcium alginate(CaAlg/PP)hydrogel composite filtration membranes were fabricated without porogen.The morphology,structure and thermal stability of the CaAlg/PP membranes were characterized by SEM and TG.The antiswelling property,dyes adsorption and dyes rejection properties of the CaAlg/PP membranes were researched.The results show that the antiswelling properties of CaAlg/PP membrane are greatly improved compared with free-standing CaAlg hydrogel filtration membrane.When the concentration of sodium chloride is 1 g·L-1,the flux of the CaAlg/PP membrane reaches 9.5 L(m2·h)-1 under 0.1 MPa and the rejection of brilliant blue is 98.3%.The pressure resistant performance of CaAlg/PP membrane is far better than CaAlg filtration membrane and can be reused multiple times after Ca2+cross-linking.The adsorption rate of anionic dyes is low,reducing the CaAlg/PP membrane fouling.The CaAlg/PP membrane can be used in dye desalination with a low salt concentration.
引文
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[19]陈敏,张新新,赵孔银,等.抗污染海藻酸钙水凝胶纳滤膜对水中重金属离子的去除性能[J].高分子材料科学与工程,2016,32(8):99-103.CHEN M,ZHANG X X,ZHAO K Y,et al.Removal of heavy metal ions from water by calcium alginate hydrogel nanofiltration membrane with high anti-fouling performance[J].Polymer Materials Science and Engineering,2016,32(8):99-103(in Chinese).
[20] ZHAO K Y,ZHANG X X,WEI J F,et al.Calcium alginate hydrogel filtration membrane with excellent anti-fouling property and controlled separation performance[J].Journal of Membrane Science,2015,492:536-546.
[21] ZHANG X X,LIN B B,ZHAO K Y,et al.A free-standing calcium alginate/polyacrylamide hydrogel filtration membrane with high anti-fouling performance:Preparation and characterization[J].Desalination,2015,365:234-241.
[22]张志箭,徐安厚,赵孔银,等.聚羟基丁酸酯纳米纤维支撑海藻酸钙纳滤膜制备及抗污染性能[J].高分子材料科学与工程,2017,33(7):179-183.ZHANG Z J,XU A H,ZHAO K Y,et al.Preparation and anti-fouling properties of polyhydroxybutyrate nanofiber supported calcium alginate nanofiltration membrane[J].Polymer Materials Science and Engineering,2017,33(7):179-183(in Chinese).
[2] BANERJEE P,DASGUPTA S,DE S,et al.Removal of dye from aqueous solution using a combination of advanced oxidation process and nanofiltration[J].Journal of Hazardous Materials,2007,140(1):95-103.
[3] VANDEVIVERE P C,BIANCHI R,VERSTRAETE W,et al.Treatment and reuse of wastewater from the textile wetprocessing industry:Review of emerging technologies[J].ChemInform,1998,29(43):289-302.
[4] AKBARI A,DESCLAUX S,ROUCH J C,et al.New UV-photografted nanofiltration membranes for the treatment of colored textile dye effluents[J].Journal of Membrane Science,2006,286(1):342-350.
[5] KOYUNCU I,TOPACIK D,WIESNER M R,et al.Factors influencing flux decline during nanofiltration of solutions containing dyes and salts[J].Water Research,2004,38(2):432-440.
[6] HOMAYOONFAL M,AKBARI A,MEHRNIA M R,et al.Preparation of polysulfone nanofiltration membranes by UV-assisted grafting polymerization for water softening[J].Desalination,2010,263(1):217-225.
[7] RAHIMPOUR A,JAHANSHAHI M, MORTAZAVIAN N,et al.Preparation and characterization of asymmetric polyethersulfone and thin-film composite polyamide nanofiltration membranes for water softening[J].Applied Surface Science,2010,256(6):1657-1663.
[8] NANDA D,TUNG K L,LI Y L,et al.Effect of pH on membrane morphology,fouling potential,and filtration performance of nanofiltration membrane for water softening[J].Journal of Membrane Science,2010,349(1):411-420.
[9]高从堦,陈益棠.纳滤膜及其应用[J].中国有色金属学报,2004,14(s1):310-316.GAO C J,CHEN Y T.Nanofiltration membrane and its application[J].Transactions of Nonferrous Metals Society of China,2004,14(s1):310-316(in Chinese).
[10]郭豪,张宇峰,梁传刚,等.纳滤膜在染料生产废水处理中的应用[J].水处理技术,2008,34(3):70-73.GUO H,ZHANG Y F,LIANG C G,et al.Study on the application of nanofiltration membrane to the treatment of dye wastewater[J].Technology of Water Treatment,2008,34(3):70-73(in Chinese).
[11] CHEN S H,CHANG D J,LIOU R M,et al.Preparation and separation properties of polyamide nanofiltration membrane[J].Journal of Applied Polymer Science,2002,83(5):11122-11181.
[12] GU Y,WANG Y N,WEI J,et al.Organic fouling of thinfilm composite polyamide and cellulose triacetate forward osmosis membranes by oppositely charged macromolecules[J].Water Research,2013,47(5):1867-1874.
[13] KUMAR R,ISLOOR A M,ISMAIL A F,et al.Synthesis and characterization of novel water soluble derivative of Chitosan as an additive for polysulfoneultranano-filtration membrane[J].Journal of Membrane Science,2013,440(1):140-147.
[14] WANG C,YANG F,MENG F,et al.High flux and antifouling filtration membrane based on non-woven fabric with chitosan coating for membrane bioreactors[J].Bioresource Technology,2010,101(14):5469-5474.
[15]李思迪,赵孔银,魏俊富,等.磷酸三钙/海藻酸钙复合平板膜的制备及其力学性能[J].复合材料学报,2014,31(4):1106-1111.LI S D,ZHAO K Y,WEI J F,et al.Preparation and characterization of calcium silicate/calcium alginate composite film[J].Acta Materiae Compositae Sinica,2014,31(4):1106-1111(in Chinese).
[16]蔺洪全,赵孔银,马敬环,等.TiO2-海藻酸钙复合膜的表征、对染料的光催化降解及TiO2回收[J].复合材料学报,2015,32(3):911-917.LIN H Q,ZHAO K Y,MA J H,et al.Characterization and dyes photocatalytic degradation of TiO2-calcium alginate film and the recovery of TiO2[J].Acta Materiae Compositae Sinica,2015,32(3):911-917(in Chinese).
[17]刘东,赵孔银,宋欢语,等.硅酸钙-海藻酸钙复合水凝胶膜的制备及表征[J].复合材料学报,2017,34(11):2401-2406.LIU D,ZHAO K Y,SONG H Y,et al.Preparation and characterization of calcium silicate-calcium alginate composite hydrogel film[J].Acta Materiae Compositae Sinica,2017,34(11):2401-2406(in Chinese).
[18]徐安厚,张新新,赵孔银,等.自支撑海藻酸钙水凝胶抗污染过滤膜的制备及截留性能[J].高分子学报,2015(8):913-920.XU A H,ZHANG X X,ZHAO K Y,et al.Preparation and rejection properties of free-standing anti-fouling calcium alginate hydrogel filtration membranes[J].Acta Polymerica Sinica,2015(8):913-920(in Chinese).
[19]陈敏,张新新,赵孔银,等.抗污染海藻酸钙水凝胶纳滤膜对水中重金属离子的去除性能[J].高分子材料科学与工程,2016,32(8):99-103.CHEN M,ZHANG X X,ZHAO K Y,et al.Removal of heavy metal ions from water by calcium alginate hydrogel nanofiltration membrane with high anti-fouling performance[J].Polymer Materials Science and Engineering,2016,32(8):99-103(in Chinese).
[20] ZHAO K Y,ZHANG X X,WEI J F,et al.Calcium alginate hydrogel filtration membrane with excellent anti-fouling property and controlled separation performance[J].Journal of Membrane Science,2015,492:536-546.
[21] ZHANG X X,LIN B B,ZHAO K Y,et al.A free-standing calcium alginate/polyacrylamide hydrogel filtration membrane with high anti-fouling performance:Preparation and characterization[J].Desalination,2015,365:234-241.
[22]张志箭,徐安厚,赵孔银,等.聚羟基丁酸酯纳米纤维支撑海藻酸钙纳滤膜制备及抗污染性能[J].高分子材料科学与工程,2017,33(7):179-183.ZHANG Z J,XU A H,ZHAO K Y,et al.Preparation and anti-fouling properties of polyhydroxybutyrate nanofiber supported calcium alginate nanofiltration membrane[J].Polymer Materials Science and Engineering,2017,33(7):179-183(in Chinese).