萃取蒸馏法处理与回收糠醛废水中醋酸的研究

:2000212215-,(,100084):,,,,,:;;:TQ028.3:A:100023770(2002)0420200203,,,117,,,,[1-4],[5],,2%(wt),,11.1HZS2DFTIR28201PCLRH2250ACTL2121.2:NaOH;COD:CODCr;BOD5:MODEL2ÊABOD22.1,(ö)1.0,,1,0.332molöL,CwCo()11,,10min2.2,,22,,,,1.028420028TECHNOLOGYOFWATERTREATMENTVol.28No.4Aug.,200222.3,,333,,,4,,D0.8542.4,,1.0,0.049molöL,2940mgöL,,,2.5,,,,,,140,,2.6,,11pH(mgöL)COD(mgöL)BOD5(mgöL)BOD5öCOD2.01992012242--4.02940237012260.521,,,,BOD5öCOD,0.522.75,,,,,90%,3,102,-,,,85%,5,:[1]KertesAS,KingCJ.[J].BiotechnolBioeng,1986,28:269-282.[2]SchugerlK,HanselR,etal.[J].IntChemEng,1988,28(3):393-405.[3]RogerWC.[J].ChemicalEngineeringProgress,1996,4:56-63.[4]RogerWC.[J].ChemicalEngineering,1996,6:94-103.[5].[J].,1994,12:10-12.THETREATMENTANDRECOVERYOFACETICACIDFROMFURFURALWASTEWATERBYEXTRACTION-DISTILLATIONZHUShen2lin,PIAOXiang2lan(DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Theprocessofremovingaceticacidfromfurfuralwastewaterbysolventextractionisstudiedinthispaper.Theresultshowsthattheextractionefficiencyofaceticacidishighbyusingmixedsolvent,consistingmainlyofsolventandalkanecontainingphosphorous.Theextractwithhighconcentrationofaceticacidwillbedistilledafterextraction.Sothesolventandraffinatecanbothbereused.Thewholeprocessformedclosedcircuitwithalmostnodischarge.Keywords:furfuralwastewater;solventextraction;aceticacid20015,,,2003()202284