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《pvdf编织管中空纤维复合膜的制备与对水中铜离子的萃取试验研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、西安建筑科技大学硕士学位论文为4%时，复合膜的形貌结构较为合理，孔隙率达到60.4%。（3）将自主研发的复合膜与膜接触器结合，研究了溶液pH、温度、水相流速和有机相流速、两相传质方式等工艺条件对萃取率的影响。结果表明：在进水浓度100mg/L时，控制pH=4.89，温度为37度，水相流速10mL/min，有机相流速18mL/min,使用PVA浓度为4%的PVDF-编织管中空纤维复合膜，萃取率达到78%。关键词：亲水性；中空纤维复合膜；膜萃取；铜离子本论文研究得到国家自然科学基金项目（51278408，51008243）、陕西省科技统筹创
2、新工程计划项目（2012KTCL03-06，2013KTCL03-16）及陕西省科技新星项目（2014KJXX-65）的资助。万方数据西安建筑科技大学硕士学位论文2+StudyonthepreparationandextractionofCufromaqueoussolutionofPVDF-woventubalhollowfibercompositemembraneSpecialty:EnvironmentalScienceandEngineeringName:WangkeInstructor:AssociateProf.WangXu
3、dongAbstarctHollowfibercompositemembraneextractionhadaveryuniqueadvantagesintermsofmetalionseparationandextractionasanewseparationtechnology,comparedwiththeusualliquid-liquidextractionprocess,membraneextractioncanprovidegreatersurfaceareaandmass,higherextractionefficienc
4、y.Currently,lesshollowfibercompositemembraneforextractionofmetalionswasinvestigated,anditscostwaslow,sotherewasaverylargeresearchvalue.Inthisstudy,PVDF-woventubalhollowfibercompositemembranewerepreparedusingPETwoventubalforsupportstrengthenlayer,PVDF、PVA、DMAC、LiClforunif
5、ormdopeliquid,throughthecoatingandphaseseparationtechnology.Andinvested2+extractionofCufromaqueoussolution.Analyzedtheaverageporediameter,porosity.Byusingscanningelectronmicroscopy(SEM)analysisthemembranestructure.Nextselectedthebestperformanceofthecompositemembraneintoa
6、glasstube.andusemembranecontactorastheexperimentalapparatusfortheextractionofcopperions,usingD2EHPAorganicasextractantandkeroseneasdiluent,TheeffectofsolutionpH,temperatureandotherprocessconditionsonthemasstransferperformance2andextractionratewerestudied.Andinvestigatedt
7、hechangesofextractionrateofCuindifferentPVAconcentration,Therebylayingthefoundationforthestudyofhydrophilicmembrane..Themainconclusionsofthisstudyareasfollows:万方数据西安建筑科技大学硕士学位论文（1）Coatinglayercoveredthebraidedtubesurfaceclosly.Comparedwiththethicknessofthebraidedtube,com
8、positemembranethicknessofcoatinglayersignificantlysmaller.Onlyabout20%.Thecompositemembranecoatingwasat
