ASTM C1308-1995(2001) 固化废料中扩散释放物加速浸出试验,模型扩散的计算机程序和从圆柱形废料状态中分离淋滤的标准试验方法
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【英文标准名称】:StandardTestMethodforAcceleratedLeachTestforDiffusiveReleasesfromSolidifiedWasteandaComputerProgramtoModelDiffusive,FractionalLeachingfromCylindricalWasteForms
【原文标准名称】:固化废料中扩散释放物加速浸出试验,模型扩散的计算机程序和从圆柱形废料状态中分离淋滤的标准试验方法
【标准号】:ASTMC1308-1995(2001)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:核废物和废弃材料;废物;模拟;计算机程序;浸出;扩散;模型;试验;加速浸出试验;模型扩散的计算机程序;固化废料中扩散释放物;部分浸出;固化废物;废弃型;处理;废弃材料
【英文主题词】:accelerated;diffusion;leach;waste
【摘要】:Thistestmethodmeasuresmasstransportfromacylindricalsolidifiedwasteformintowaterunderconditionsthataccelerateleaching.Testparameters,suchasthevolumeofleachantandthefrequencyatwhichtheleachantischanged,havebeenoptimizedtoeliminateexperimentaleffects(forexample,saturationeffectsthatcancomplicatemodelingofthenetforwarddiffusionrate).Thistestmethodcanbeusedto:5.2.1Providediffusioncoefficientsforwasteforms;5.2.2Obtainhigherfractionreleasesthancanbeachievedwithexpectedserviceconditionsforgreaterconfidenceinwasteformproperties;5.2.3Obtainmeasurableleachateconcentrationsfrommaterialsthathaveverylowreleaseratesunderserviceconditions;and5.2.4Comparereleasesfromvarioustypesofsolidificationagentsandformulations.Modelingtheexperimentalobservationsobtainedinthetestallowstheextrapolationofleachingresultstolongtimesandtofull-scalewasteformsunderthefollowingconstraints:5.3.1Resultsofthistestmethodcannotbetakentoapplytoreleasesinspecificdisposalenvironmentsunlesstestsareconductedtodeterminetheleachingmechanismunderthoseconditions.5.3.2Projectionsofreleasesrequirethelong-termstabilityofthewasteform,whichmayormaynotbeindicatedadequatelybyshort-termtests.5.3.3ExtrapolationsarelimitedtothemaximumCFLobtainedwiththeacceleratedtest.5.3.4Theleachingmechanismsobservedintestsconductedatelevatedtemperaturesmustbethesameasthemechanismsobservedinthetestsrunatthereferencetemperature.1.1Thistestmethodprovidesamethodforacceleratingtheleachrateofsolidifiedwasteanddeterminingifthereleaseisdiffusion-controlled.Thistestmethodisapplicabletoanymaterialthatdoesnotdegrade,deform,orchangeleachingmechanismduringthetest.1.1.1Ifdiffusionisthedominantleachingmechanism,thenresultsofthistestcanbeusedtomodellong-termreleasesfromwasteforms.Diffusioncanbeconfirmedastheleachingmechanismthroughtheuseofacomputerizedmathematicalmodelfordiffusionfromthefinitecylinder(Note1).1.1.2Theleachingmechanismshouldbeverifiedasdiffusion-controlledbyameansotherthananalysisoftheleachtestdata.Forthispurpose,analysisofpost-leachingconcentrationprofileswithinthesolidwasteformisrecommended.Note18212;ThecomputerprogramandthemodelsarebrieflydescribedinandintheAcceleratedLeachTestMethodandUser'sGuideforthe"ALT"ComputerProgram(1).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z13
【国际标准分类号】:13_030_10
【页数】:8P.;A4
【正文语种】:
【原文标准名称】:固化废料中扩散释放物加速浸出试验,模型扩散的计算机程序和从圆柱形废料状态中分离淋滤的标准试验方法
【标准号】:ASTMC1308-1995(2001)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:核废物和废弃材料;废物;模拟;计算机程序;浸出;扩散;模型;试验;加速浸出试验;模型扩散的计算机程序;固化废料中扩散释放物;部分浸出;固化废物;废弃型;处理;废弃材料
【英文主题词】:accelerated;diffusion;leach;waste
【摘要】:Thistestmethodmeasuresmasstransportfromacylindricalsolidifiedwasteformintowaterunderconditionsthataccelerateleaching.Testparameters,suchasthevolumeofleachantandthefrequencyatwhichtheleachantischanged,havebeenoptimizedtoeliminateexperimentaleffects(forexample,saturationeffectsthatcancomplicatemodelingofthenetforwarddiffusionrate).Thistestmethodcanbeusedto:5.2.1Providediffusioncoefficientsforwasteforms;5.2.2Obtainhigherfractionreleasesthancanbeachievedwithexpectedserviceconditionsforgreaterconfidenceinwasteformproperties;5.2.3Obtainmeasurableleachateconcentrationsfrommaterialsthathaveverylowreleaseratesunderserviceconditions;and5.2.4Comparereleasesfromvarioustypesofsolidificationagentsandformulations.Modelingtheexperimentalobservationsobtainedinthetestallowstheextrapolationofleachingresultstolongtimesandtofull-scalewasteformsunderthefollowingconstraints:5.3.1Resultsofthistestmethodcannotbetakentoapplytoreleasesinspecificdisposalenvironmentsunlesstestsareconductedtodeterminetheleachingmechanismunderthoseconditions.5.3.2Projectionsofreleasesrequirethelong-termstabilityofthewasteform,whichmayormaynotbeindicatedadequatelybyshort-termtests.5.3.3ExtrapolationsarelimitedtothemaximumCFLobtainedwiththeacceleratedtest.5.3.4Theleachingmechanismsobservedintestsconductedatelevatedtemperaturesmustbethesameasthemechanismsobservedinthetestsrunatthereferencetemperature.1.1Thistestmethodprovidesamethodforacceleratingtheleachrateofsolidifiedwasteanddeterminingifthereleaseisdiffusion-controlled.Thistestmethodisapplicabletoanymaterialthatdoesnotdegrade,deform,orchangeleachingmechanismduringthetest.1.1.1Ifdiffusionisthedominantleachingmechanism,thenresultsofthistestcanbeusedtomodellong-termreleasesfromwasteforms.Diffusioncanbeconfirmedastheleachingmechanismthroughtheuseofacomputerizedmathematicalmodelfordiffusionfromthefinitecylinder(Note1).1.1.2Theleachingmechanismshouldbeverifiedasdiffusion-controlledbyameansotherthananalysisoftheleachtestdata.Forthispurpose,analysisofpost-leachingconcentrationprofileswithinthesolidwasteformisrecommended.Note18212;ThecomputerprogramandthemodelsarebrieflydescribedinandintheAcceleratedLeachTestMethodandUser'sGuideforthe"ALT"ComputerProgram(1).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z13
【国际标准分类号】:13_030_10
【页数】:8P.;A4
【正文语种】:
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