改性聚偏氟乙烯膜的制备及电化学处理染料废水印染（2024No.2）改性聚偏氟乙烯膜的制备及电化学处理染料废水李程程，苏醒，陈安琪，朱媛，赵格格，蔡再生，赵亚萍()东华大学化学与化工学院，生态纺织品科技教育部重点实验室，上海201620摘要：为提高分离膜处理染料时的防污性能，利用碳纳米管铁钴催化剂（CFC）和乙炔黑对聚偏氟乙烯膜（PVDF）掺杂改性，制备导电复合膜。对制备的复合膜进行表征，评价了复合膜在电化学耦合膜分离技术中对甲基蓝染料的分离性能。结果表明：CFC的加入提高了复合膜的导电性和亲水性，相对于纯PVDF膜，复合膜的接触角下降了10.80°。且复合膜采用电化学耦合膜分离技术对甲基蓝染液的分离效率在90.27%，循环5次后分离效率仍保持在88.86%以上，纯水通量只下降1.01L/（m2·h）。相比于简单膜分离技术，分离效率提高19.00%，5次循环后的分离效率提高53.17%，循环通量提高87.09L/（m2·h）。说明外加电压的使用可以提高复合膜的分离效率和防污性能。关键词：碳纳米管铁钴催化剂；导电复合膜；电化学耦合膜分离；染料分离中图分类号：TS199文献标志码：BDOI：10.3969/j.yinran.202402008PreparationofmodifiedpolyvinylidenefluoridemembranesandelectrochemicaltreatmentofdyewastewaterLIChengcheng,SUXing,CHENAnqi,ZHUYuan,ZHAOGege,CAIZaisheng,ZHAOYapingæèççöø÷÷KeyLabofScience&TechnologyofEco-Textile,MinistryofEducation,CollegeofChemistryandChemicalEngineering,DonghuaUniversity,Shanghai,201620,ChinaAbstract:Inordertoimprovetheanti-foulingperformanceofseparationmembranesinthetreatmentofdyes,conductivecompositemembraneispreparedbydopingandmodifyingpolyvinylidenefluoridemembranes（PVDF）usingcarbonnanotubeironcobaltcatalyst（CFC）andacetyleneblack.Thepreparedcompositemem⁃braneischaracterizedanditsseparationperformanceforMethylBlueisevaluatedunderanelectrochemicallycoupledmembraneseparationtechnique.TheresultsshowthattheadditionofCFCimprovedtheconductivityandhydrophilicityofthecompositemembrane.ComparedwithpurePVDFmembrane,thecontactangleofcompositemembranedecreasedby10.80°.Theseparationefficiencyofthecompositemembraneusingelec⁃trochemicallycoupledmembraneseparationtechnologyforseparatingMethylBlueis90.27%,andthesepara⁃tioneff...
