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학술지명 Journal of Membrane Scicence
저자 윤제용,이정석,김용협,안경현,이상철,김태원,이경혁,김철인,배상식,서동균,임재림,백영민
발표일 2014-05-01
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A verticallyalignedcarbonnanotube(VACNT)membranecreatedfromthesuccessfulfusionof
nanotechnologyandmembranetechnologyhasbeenstatedtobeanextgenerationmembranedue
to itsfastwatertransportandantimicrobialproperties.AlthoughpreviousstudiesoftheVACNT
membrane reportedthepotentialforfastwatertransportordesalinationbymoleculardynamics
simulation, thisstudyisthe first toreportonthefeasibilityofusingtheVACNTmembraneforwater
purification. TheVACNTmembrane(4.8nmofporediameterand6.81010 #/cm2 of poredensity)was
fabricated andits flux, rejectionperformance,andmembranebiofoulingtendencywereevaluatedin
comparison tothecommercialultrafiltration (UF)membrane.TheVACNTmembraneappearedtohavea
water flux approximatelythreetimeshigherthantheUFmembraneandwatertransportapproximately
70,000timesfasterthanconventionalno-slip flow.Thishigher flux waspeculiarlyobservedinwater,the
most hydrophilicsolvent,whileothersolventsshowedthatpermeate flux decreasedwithhigher
viscosity.TherejectionpropertyoftheVACNTmembraneasexaminedbytheMWCOmeasurementwas
similar tothecommercialUFmembrane.Additionally,theVACNTmembraneshowedbetterbiofouling
resistance withapproximately15%lesspermeate flux reductionand2loglessbacterialattachmentthan
the UFmembrane.ThisstudyreportsthehighpotentialoftheVACNTmembranewithantifouling
property inthewaterpurification process.
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