Designation:D6586−03(Reapproved2021)StandardPracticeforthePredictionofContaminantAdsorptiononGACinAqueousSystemsUsingRapidSmall-ScaleColumnTests1ThisstandardisissuedunderthefixeddesignationD6586;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversatestmethodfortheevaluationofgranularactivatedcarbon(GAC)fortheadsorptionofsolublepollutantsfromwater.Thispracticecanbeusedtoestimatetheoperatingcapacitiesofvirginandreactivatedgranularacti-vatedcarbons.Theresultsobtainedfromthesmall-scalecolumntestingcanbeusedtopredicttheadsorptionoftargetcompoundsonGACinalargecolumnorfull-scaleadsorberapplication.1.2Thispracticecanbeappliedtoalltypesofwaterincludingsyntheticallycontaminatedwater(preparedbyspik-inghigh-puritywaterwithselectedcontaminants),potablewaters,industrialwastewaters,sanitarywastes,andeffluentwaters.1.3Thispracticeisusefulforthedeterminationofbreak-throughcurvesforspecificcontaminantsinwater,thedeter-minationofthelengthsoftheadsorbatesmasstransferzones(MTZ),andthepredictionofGACusageratesforlargerscaleadsorbers.1.4Thefollowingsafetycaveatappliestotheproceduresection,Section10,ofthispractice:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2652Terminolo...
