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Dynamic Membrane Separation Technology


entalScience & Engineering, TianjinUniversity,[link widoczny dla zalogowanych], Tianjin300072) Abstract: Theconceptofdynamicmembranewereintroducedandthefactorsaffectingthepropertiesofdynamicmembraneandtheeffectsofdynamicmembraneonwastewatertreatmentwerediscussed. Itpointsoutthatdy-namicmembranetechnologyisofgoodpotentialinapplicationbutstillinexperimental'stageandfurtherresearchiSnecessary. Keywords: dynamicmembrane, wastewatertreatment, researchdevelopment (on the next section 9O page) Sulfurremovalfrommixtureof a heptane / organosulfurecompoundviapervaporationCHENTianquan, CHENJinxun,[link widoczny dla zalogowanych], LIJiding, ZHAOChangwei, CHENCuixian (DepartmentofChemicalEngineering, TsinghuaUniversity,[link widoczny dla zalogowanych], Beijing100084, China) Abstract: Inthepresentedstudy. themixturesof a heptaneandorganosulfurcompoundswereusedtosimu-lategasoline, andtheorganosulfurecompoundswereremovedfromthesimulatedgasolinebyPDMScompositemembraneviapervaporation. Theeffectsoffeedtemperatureandtheco. ntentofsulfurinfeedontheperfor-manceofpervaporationwerestudied. Theexperimentalresultsshowthatthefeedtemperaturecansignificantlyaffectthepermeability,[link widoczny dla zalogowanych], whiletheinfluenceofthecontentofsulfuronthepermeabilitycanbeneglected. These-lectivityofPDMScompositemembranefordifferentorganosulfurcompoundswerecharacterizedbygroup-con-tributionmethod. Thetheoreticalresultsshowgoodagreementwiththeexperimentalresults, andtheorderofselectivityfordifferentorganosulfurcompoundsis: thiophene> 2 a methylthiophene> 2,[link widoczny dla zalogowanych],5 a dimethylthiophene> a butylmercaptan> a butylsulphide. Keyword: sulfurremovalfromgasoline; pervaporation; PDMS; permeability; selectivity

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