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:2002206210;2002207210:(No.59971051);(G19990650):(1976-),,.Tel:024-23915898E-mail:zhaoenzhang@163.com,,,,,,110016:,.:;;;:TG172182:A:100226495(2003)0420212204ADVANCESINSUPERCRITICALWATEROXIDATIONTECHNOLOGYANDITSAPPLICATIONZHANGZhao2en,ZHANGLi,GUANHui,HANEn2hou,KEWeiStateKeyLaboratoryforCorrosionandProtection,InstituteofMetalResearch,TheChineseAcademyofSciences,Shenyang110016,ChinaABSTRACT:Supercriticalwatertechnologyisapromisingandhigheffectivemethodfortreatmentoforganicwaste.Recentadvancesinsupercriticalwateroxidationtechnologyanditsapplicationarere2viewedinthearticle.Somekeyissuesappearedintheapplicationisdiscussedtoo.KEYWORDS:supercriticalwater;oxidation,organics;environmentalprotection[1]..,,[2].,[3],.,,.,.-(supercriticalwateroxida2tion,SCWO),(:400650;:2150107Pa)[4].[5,6].,SCWO1/3[7].,[8,9].,[10].,.,SCWO,[11].SCWO[12].,.1SCWO,.SCWO.111pH,(,PSN,,H3PO4H2SO4HNO3),pH.Reynolds[13].McDonold500pH,SCWOpH.15420037CORROSIONSCIENCEANDPROTECTIONTECHNOLOGYVol115No14Jul12003©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,Ag-O2,,H+,300,01001%100%716110-6716110-4mol/kg[14].Ag,200330[15].,300,.112,,.,P.P2MPa,,.,.10%,.,,50100...113E-pH,[16].S1Huang,Ag/AgCl.300750,200MPa280MPa,Ag/AgCl(011MKCl)EO=014597-010006087(volts),[17,18].pH(Cu/Cu2O)Keithley616Keithley705.114SCWO,.,.E-pH,.[19,20].,,.MIT(),Y1J1Kim[21];CircelecCasidie,,.IdahoSCWO.,[2224].,C1LiuMcDonold[25].[26].[27].2SCWO211SCWO,,().SCWO.SCWO1975.1994Texas,.,.,(),SCWO.,SCWO.:SCWO.,(MIT),(TNT),...,..,SCWO;.,.,3124:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3742118107Pa;217130106Pa,.SCWO,,(,Cl-),,.,,SCWO[28].212SCWOSCWO.,.,SCWO.21211SCWO,,.[29],67312K77312K,24MPa30MPa,SCWO,522mg/L,72312K,26MPa,3147,17s,S2-SO2-4.1SCWO.,,.SCWO.ShanablehSCWO,5min99%COD,CO2H2O.,(ModellDevelopmentCorp1Eco-WasteTechnologiesModarInc1)130230L/hSCWO.,10,.SCWO[30],.TakahashiYSCWO(),SCWO,CO2H2ON2,.SC2WO.,550,2min95%.[31],.,,,015h1h,.,.,,500kg.21212,,SCWO.,,;,,,[32];Table1Oxidationresultsoforganicwastesinsupercriticalwatercondition()(),,min,%Organicnitricompounds2,4-2,4-Dinitrotoluene45701599172,4-2,4-Dinitrotoluene5130159919922,4-2,4-Dinitrotoluene5740159919998Halogenatedaliphatics1,1,1-1,1,1-Trichloroethane495316991991,2-1,2-Ethylene495316991991,1,2,2-1,1,2,2-Titrachloroethylene49531699199HalogenatedaromaticsHexachiorocyllopentadiene488315991990-0-chlorobenzene495316991991,2,4-1,2,4-trichlorobenzene495316991994,4-4,4-Dichlorobipheny500414991993DDT505317991997PCB123451031799199PCB125451031799199Dioxin(2,3,7,8-TCDD)57431799199995a41215©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,.,,,,.3,SCWO,.,,.,,SCWO,,,,,,.SCWO.,,.SCWO.,,,.:[1].[J].,1997,18(2):51.[2]MittonDB,YoonJ2H,ClineJA,etal.TheProceedingofthe5thInternationalSymposiumonSupercriticalFluids[C],WestinAtlantaNorthAtlanta,Georgia,USA,April8-12,2000.[3],,.[J].,2001,(3):57.[4]MittonDB,MarronePA,andLatanisionRM.InterpretationoftheRationaleforFeedModificationinSCWOSystem[J].J.Electrochem.Soc.,1996,143(3):59.[5].[J].,1999,11(1):53.[6]MittonDB,ZhangS2H,HautanenKE,etal.EvaluatingStressCorrosionandCorrosionAspectsinSupercriticalWaterOxidationSystemsfortheDestructionofHazardousWaste[J].Corrosion97,PaperNo.203.[7],,.[J].,2001,21(7):1.[8],,,.-[J].,1997,(3):39.[9],,,.PET,[J].,1999,7(2):96.[10]StevenBH,YuY,DavidJM.ExtractionofOrganicPollu2tantsfromEnvironmentalSolidswithSub2andSupercriticalWater[J].Ana.Chem.,1994,66:2912.[11].[J]..2000,29(supp.1):46.[12],,.[J].,2001,21(2):79.[13]ReynoldsMBandClarkeWL.MeasurementandControlofDissolvedO2ContentofWateratElevatedTemperaturesandPressure[J].CorrosionScience,1970,10:883.[14]HaraNandMacdonaldDD.DevelopmentofDissolvedHydro2genSensorsBasedonYttria2StabilizedZirconiaSoliaElec2trolytewithNobleMetalElectrodes[J].J.Electrochem.Soc.,1997,144(12):4152.[15]HaraNandMacdonaldDD.OxygenResponseofYttria2Stabi2lizedZirconiaSensorsinGaseousandAqueousSystems[J].J.Electrochem.Soc.,1997,144(12):4158.[16]KrisunovLBandMacdonaldDD.Potential2PhDiagramsforIroninSupercriticalWater[J].Corrosion,1997,53(8):605.[17]HuangS,DaehlingK,CarlesonTE,etal.ConstructionandCalibrationofanInternalSilver/SilverChlorideReferenceElectrodeforSupercriticalFluidStudies[J].Corrosion,1991,47(3):185.[18]MacdonaldDD.ReferenceElectrodesforHighTemperautreAqueousSystems2AReviewandAsessmetn[J].Corrosion,1978,34(3):75.[19]LeeKH,ChangD,YoonJ2H,etal.Proceedingofthe12thA2siaPacificCorrosionControlConference2001[C].October8-12,2001,Seoul,Korea:766.[20]MittonDB,OrzalliJCandLatanisionRM.CorrosionStudiesinSupercriticalWaterOxidationSystem[R].TheSupercriticalFluidScienceandTechnologySymposiumattheAICHEAn2nualMeeting,SanFranciscoNovember13-18(1994).[21]KimYJ.In2SituElectrochemicalImpedanceMeasurementofOxideFilmFormedonType304StainlessSteelinHigh2Tem2peratureWater[J].Corrosion,2000,56(4):389.[22]DawsonJL,FarrellDM,AylottPJ,etal.Corrosionmonitor2ingusingelectrochemicalnoisemeasurements[J].Corrosion89,PaperNo.31.[23]EdenDA,RothwellANandDawsonJL.ElectrochemicalNoiseforDetectionofSusceptibilityofStressCorrosionCrack2ing[J].Corrosion91