| Fe3+交联聚乙烯亚胺-单宁酸复合纳滤膜研究 |
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| 引用本文： | 何健,秦秋毫,杜林,漆梦茹,刘大朋,洪耀良. Fe3+交联聚乙烯亚胺-单宁酸复合纳滤膜研究[J]. 水处理技术, 2021, 0(4): 91-95,120 |
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| 作者姓名： | 何健 秦秋毫 杜林 漆梦茹 刘大朋 洪耀良 |
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| 作者单位： | 苏州科技大学环境科学与工程学院;水处理技术与材料协同创新中心 |
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| 基金项目： | 江苏省高等学校自然科学研究项目(18KJB610017)。 |
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| 摘 要： | 利用聚乙烯亚胺(PEI)、单宁酸(TA)与Fe3+之间的螯合作用,通过层层自组装技术,制备了PEI-TA复合纳滤膜,对其表面形态及性能进行了表征,并研究了TA、Fe3+含量和组装层数对膜性能的影响。结果表明,当PEI、TA、Fe3+的质量浓度分别为2、3、3 g/L,组装层数为6层时,复合膜性能为优。优化膜对Na2SO4、MgCl2、NaCl的截留率分别为97.34%、65.46%、73.11%,水通量达24.91 L/(m2·h)。该复合膜制备工艺简单、绿色,在脱盐、水质软化等水处理领域具有应用潜力。
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| 关 键 词： | 聚乙烯亚胺-单宁酸复合纳滤膜 Fe3+ 层层自组装 |
Study on Fe3+ Cross-Linked Polyethyleneimine-Tannic Acid Composite Nanofiltration Membrane |
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| HE Jian,QIN Qiuhao,DU Lin,QI Mengru,LIU Dapeng,HONG Yaoliang. Study on Fe3+ Cross-Linked Polyethyleneimine-Tannic Acid Composite Nanofiltration Membrane[J]. Technology of Water Treatment, 2021, 0(4): 91-95,120 |
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| Authors: | HE Jian QIN Qiuhao DU Lin QI Mengru LIU Dapeng HONG Yaoliang |
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| Affiliation: | (The School of Environmental Science and Engineering,SuZhou University of Science and Technology;Collaborative Innovation Center for Water Treatment Technology And Materials,SuZhou University of Science and,Technology,Suzhou 215009,China) |
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| Abstract: | The PEI/TA composite nanofiltration membrane was prepared with the layer-by-layer(LbL) self-assembly by using the chelation between polyethyleneimine(PEI),tannic acid(TA) and Fe3+.Its surface morphology and performance was characterized.The effects of TA and Fe3+ content,layer number on the membrane properties were studied.The results showed that,when the mass concentration of PEI,TA and Fe3+was 2 g/L,3 g/L and 3 g/L,respectively,the assembled layers were 6 layers,the composite membrane had the optimal performance.Its retention rate for Na2SO4,MgCl2 and Na Cl was 97.34%,65.46% and 73.11%,respectively,and the water flux reached 24.91 L/(m2·h).The composite membrane preparation process is simple and green,and has application potential in water treatment fields such as desalination and water softening. |
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| Keywords: | polyethyleneimine-tannic acid composite nanofiltration membrane Fe3+ layer-by-layer self-assembly |
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