SINTESISGRANULAKOMPOSITSEMEN-ZEOLITDANUJIADSORPSI-DESORPSICAMPURANETANOL-AIR; SYNTHESISOFCEMENT-ZEOLITECOMPOSITEGRANULESANDTHEADSORPTION-DESORPTIONTESTOFETHANOL/WATERMIXTURE

KOMEYNIRUSBA, Yateman Arryanto

2011 | Disertasi | PROGRAM STUDI S2 ILMU KIMIA

Synthesisofcement-zeolitecompositegranulesandtheadsorption-desorptiontestofethanol/watermixturehavebeensuccessfullyconducted.Cement-zeolitecompositegranulesweremadebymanuallystirringthemixtureof5gramsofnaturalzeolite,2gramsofportlandcement,and4mLofdistilledwaterinaporcelaindisk.Thesuspensionwasformedasgranulesandwasallowedtobedryatroomtemperaturein5days.Cement-zeolitegranuleswerecharacterizedusinginfraredspectroscopy(FTIR)andX-raydiffraction(XRD)methods.Thecompressivestrengthofcement-zeolitecompositegranuleswasdeterminedusingmaterialtestingmachine.Adsorptioncapacitytestwascarriedoutbysoakingcompositegranulesinwaterfor24hoursandthencalculatingtheweightdifferenceofcompositegranulesbeforeandaftersoaking.Adsorptionanddesorptiontestwereconductedbydropping1mLethanol-watermixturewithvariousconcentrations(99.9%,90%,80%and75%(v/v))ofethanoloncompositegranulesanditsadsorption-desorptiontimewasthennoted. C haracterizationusingFTIRshowedthefunctionalgroupsofcement-zeolitecompositegranulefillersandthefunctionalgroupsindicatingtheformationofcalciumsilicatehydrate(CSH)fromthecementhydrationreaction.ResultsofanalysisusingX-raydiffractionconfirmedtheFTIRdatawhichwasmarkedbythepresenceofdiffractionpeaksofthecompositecement-zeolitegranulefillersandcementhydrationproducts(ettringite,jennite,andtobermorite).Thestudyofthezeoliteparticlesizeeffectonthequalityofthecompositegranulesshowedthatthecompositegranuleswithparticlesizeof400meshhasthehighestwateradsorptioncapacity(31.39%)andforparticlesizeof80meshhasthehighestcompressivestrength(140.4863N).Thestudyontheinfluenceoftheamountofcementshowedthatthecompositegranulespreparedbymixing1gramofcementwith5gramsofzeolitehasthehighestwateradsorptioncapacity(35.5%).Thehighestcompressivestrength(119.5302N)wasachievedbythecompositegranulesmadewith5gramsofcement.Theresultofdesorptiontimetestshowedthattheethanoldesorptiontimewasmuchfasterthanthatthewater,andthistimedifferencewasthenusedasthebasisforseparationofethanol-watermixturewithoutheating.

Kata Kunci : Kuattekan,Granulakompositsemen-zeolit,ujiadsorpsi-desorpsi