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1、FibersandPolymers2015,Vol.16,No.9,1861-1869ISSN1229-9197(printversion)DOI10.1007/s12221-015-5371-1ISSN1875-0052(electronicversion)PreparationofPVA-chitosanBlendNanofiberandItsDyeRemovalAbilityfromColoredWastewaterNiyazMohammadMahmoodi*andZahraMokhtari-Shourij
2、ehDepartmentofEnvironmentalResearch,InstituteforColorScienceandTechnology,Tehran1668814811,Iran(ReceivedMay13,2015;RevisedJuly22,2015;AcceptedJuly25,2015)Abstract:Inthispaper,poly(vinylalcohol)(PVA)-chitosanblendnanofiberwaspreparedanditsdyeremovalabilityfrom
3、coloredwastewaterwasinvestigated.ThecharacteristicsoftheadsorbentwerestudiedusingFouriertransforminfrared(FTIR)andscanningelectronmicroscopy(SEM).DirectRed80(DR80),DirectRed81(DR81)andReactiveRed180(RR180)wereusedasanionicdyes.TheeffectsofpH,contacttime,adsor
4、bentdosageandinitialdyeconcentrationondyeremovalwerestudied.Thekineticsandisothermofdyeremovalfollowspseudo-secondorderkineticsandtheLangmuirisotherm,respectively.Desorptionstudiesshowedthatadsorbentcouldberecoveredandregenerated.TheresultsshowthatPVA-chitosa
5、nblendnanofiberisasuitableadsorbentwithhighdyeadsorptioncapacityfromcoloredwastewater.Keywords:Nanofiber,Poly(vinylalcohol)-chitosanblend,Dyeremoval,AdsorptionIntroductionandwaterpurificationapplications.Thesepropertiesariseasaresultofprotonationof-NH2groupso
6、nthechitosanIndustrialactivitygrowthandincreasingwaterusagehavebackbone.Recently,electrospunnanofibersbasedonchitosanledtothereleaseofvariouspollutantsintoaquaticenvironment,havebeenwidelyresearchedandvariousnanofiberproductssuchastoxicheavymetals,dyes,pestic
7、ides,humicsubstances,containingchitosanhavebeenproducedbyelectrospinning.detergentsandotherpersistentpollutants.ThesekindsofThesenanofibersyieldpotentialapplicationsinvariouspollutantsaremainlycharacterizedbymarkednotonlyareas[10-15].persistenceagainstchemica
8、lorbiologicaldegradation,butPoly(vinylalcohol)(PVA)isabiocompatible,nontoxicalsohighenvironmentalmobilityandstrongtendencyforandbiodegradablesyntheticpolymer,whichiswidelyusedbioaccumulat
