논문실적
| High performance and antifouling vertically aligned carbon nanotube |
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학술지명 Journal of Membrane Scicence
저자 배상식,이상철,이경혁,임재림,백영민,김철인,서동균,김태원,이정석,김용협,안경현,윤제용
발표일 2014-05-01
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A verticallyalignedcarbonnanotube(VACNT)membranecreatedfromthesuccessfulfusionofnanotechnologyandmembranetechnologyhasbeenstatedtobeanextgenerationmembranedueto itsfastwatertransportandantimicrobialproperties.AlthoughpreviousstudiesoftheVACNTmembrane reportedthepotentialforfastwatertransportordesalinationbymoleculardynamicssimulation, thisstudyisthe first toreportonthefeasibilityofusingtheVACNTmembraneforwaterpurification. TheVACNTmembrane(4.8nmofporediameterand6.81010 #/cm2 of poredensity)wasfabricated andits flux, rejectionperformance,andmembranebiofoulingtendencywereevaluatedincomparison tothecommercialultrafiltration (UF)membrane.TheVACNTmembraneappearedtohaveawater flux approximatelythreetimeshigherthantheUFmembraneandwatertransportapproximately70,000timesfasterthanconventionalno-slip flow.Thishigher flux waspeculiarlyobservedinwater,themost hydrophilicsolvent,whileothersolventsshowedthatpermeate flux decreasedwithhigherviscosity.TherejectionpropertyoftheVACNTmembraneasexaminedbytheMWCOmeasurementwassimilar tothecommercialUFmembrane.Additionally,theVACNTmembraneshowedbetterbiofoulingresistance withapproximately15%lesspermeate flux reductionand2loglessbacterialattachmentthanthe UFmembrane.ThisstudyreportsthehighpotentialoftheVACNTmembranewithantifoulingproperty inthewaterpurification process. |
