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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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二价/单价阳离子混合体系的纳滤过程
DOI: 10.3969/j.issn.1671-7627.2013.04.011, PP. 53-57
Keywords: 纳滤,分离因子,荷电密度,介电常数
Abstract:
采用dk膜对(mg2+、k+、cl-)、(ca2+、na+、cl-)三元离子混合体系进行分离实验,通过道南细孔-介电(dspm-de)模型对其分离性能进行评价。结果表明:料液中二价阳离子与单价阳离子浓度比越大,分离因子(sf)越小,越有利于分离;操作压力的增加亦能提高dk膜的分离能力,即sf随压差或渗透流率增加而减小,最后趋于稳定,存在一个极限sf。模型分析发现膜荷电密度(xd)及孔内介电常数(εp)不仅与离子浓度有关,还与离子类型有关,且xd及εp均随二价阳离子含量增加而单调减小;而sf随xd、εp的减小而减小,证实了xd和εp的大小直接决定二价阳离子与单价阳离子分离效果。
| [1] | wangdx,sum,yuzy,etal.separationperformanceofananofiltrationmembraneinfluencedbyspeciesandconcentrationofions[j].desalination,2005,175:219-225.
|
| [2] | garciaaj,dicksonjm.mathematicalmodelingofnanofiltrationmembraneswithmixedelectrolytesolutions[j].journalofmembranescience,2004,235:1-13.
|
| [3] | santafémorosa,gozálvezzafrillajm,loragarcíaj.applicabilityofthedspmwithdielectricexclusiontoahighrejectionnanofiltrationmembraneintheseparationofnitratesolutions[j].desalination,2008,221:268-276.
|
| [4] | teixeiramr,rosamj,mariannen.theroleofmembranechargeonnanofiltrationperformance[j].journalofmembranescience,2005,265:160-166.
|
| [5] | yaroshchukae.non-stericmechanismsofnanofiltration:superpositionofdonnananddielectricexclusion[j].separationandpurificationtechnology,2001,22:143-155.
|
| [6] | wangd,wul,liaoz,etal.modelingtheseparationperformanceofnanofiltrationmembranesforthemixedsaltssolutionwithmg2+andca2+[j].journalofmembranescience,2006,284:384-392.
|
| [7] | garciaalemanj,dicksonjm.permeationofmixed-saltsolutionswithcommercialandpore-fillednanofiltrationmembranes:membranechargeinversionphenomena[j].journalofmembranescience,2004,239:163-172.
|
| [8] | ahmadal,chongmf,bhatias.mathematicalmodelingandsimulationofthemultiplesolutessystemfornanofiltrationprocess[j].journalofmembranescience,2005,253:103-115.
|
| [9] | bandinis,vezzanid.nanofiltrationmodeling:theroleofdielectricexclusioninmembranecharacterization[j].chemicalengineeringscience,2003,58:3303-3312.
|
| [10] | timmerjmk,speelmansmpj,vanderhorsthc.separationofaminoacidsbynanofiltrationandultrafiltrationmembranes[j].separationandpurificationtechnology,1998,14:133-144.
|
| [11] | yawk,roumc.ionrejectioninsingleandbinarymixedelectrolytesystemsbynanofiltration:effectoffeedconcentration[j].separationscienceandtechnology,2007,42(14):3071-3084.
|
| [12] | deytk,ramachandhranv,misrabm.selectivityofanionicspeciesinbinarymixedelectrolytesystemsfornanofiltrationmembranes[j].desalination,2000,127:165-175.
|
| [13] | rautenbachr,gröschla.separationpotentialofnanofiltrationmembranes[j].desalination,1990,77:73-84.
|
| [14] | schaepj,vandecasteelec,mohammadaw.modellingtheretentionofioniccomponentsfordifferentnanofiltrationmembranes[j].separationandpurificationtechnology,2001,22-23:169-179.
|
| [15] | 戚茂飞,武海洋,刘文强,等.cacl2对葡萄糖纳滤截留率的影响[j].南京工业大学学报:自然科学版,2011,33(4):103-106.
|
| [16] | bowenwr,mukhtarh.characterizationandpredictionofseparationperformanceofnanofiltrationmembranes[j].journalofmembranescience,1996,112:263-274.
|
| [17] | mohammadaaw,hilaln,darwishna.predictionofpermeatefluxesandrejectionsofhighlyconcentratedsaltsinnanofiltrationmembranes[j].journalofmembranescience,2007,289:40-50.
|
| [18] | kogay,westhp,daviesjv,etal.theeffectsofchloridesaltsofsomecationsonthemolecularorganizationofh2o:towardsunderstandingthehofmeisterseries[j].journalofphysicalchemistrya,2004,108:8533-8541.
|
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