Designation:D5228−16StandardTestMethodforDeterminationofButaneWorkingCapacityofActivatedCarbon1ThisstandardisissuedunderthefixeddesignationD5228;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthebutaneworkingcapacity(BWC)ofnewgranularactivatedcarbon.TheBWCisdefinedasthedifferencebetweenthebutaneadsorbedatsaturationandthebutaneretainedperunitvolumeofcarbonafteraspecifiedpurge.Thetestmethodalsoproducesabutaneactivityvaluethatisdefinedasthetotalamountofbutaneadsorbedonthecarbonsampleandisexpressedasamassofbutaneperunitweightorvolumeofcarbon.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,see7.1.2.ReferencedDocuments2.1ASTMStandards:2D2652TerminologyRelatingtoActivatedCarbonD2854TestMethodforApparentDensityofActivatedCarbonD2867TestMethodsforMoistureinActivatedCarbonD3195PracticeforRotameterCalibrationE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE300PracticeforSamplingIndustrialChemicalsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD2652.4.SummaryofTestMethod4.1Anactivatedcarbonbedofknownvolumeandmassissaturatedwithbutanevapor.Themassadsorbedatsaturationisnoted.Thecarbonbedisthenpurgedunderprescribedcondi-tionswithdryhydrocarbonfreeair.ThelossofmassistheBWCandisexpressedasmassofbutaneperunitvolumeofcarbon.5.SignificanceandUse5.1TheBWC,asdeterminedbythist...
