ASTM_D_5832_-_98_2021.pdf

Designation:D583298(Reapproved 2021)Standard Test Method forVolatile Matter Content of Activated Carbon Samples1This standard is issued under the fixed designation D5832;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the per-centage of gaseous products,exclusive of moisture vapor,present in virgin and used activated carbons which are releasedunder specific conditions of the test.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2652 Terminology Relating to Activated CarbonD2867 Test Methods for Moisture in Activated CarbonD3175 Test Method for Volatile Matter in the AnalysisSample of Coal and Coke3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod relating to activated carbon,refer to TerminologyD2652.4.Summary of Test Method4.1 Volatile matter is determined by establishing the loss inmass resulting from heating an activated carbon sample underrigidly controlled conditions.The measured mass loss,cor-rected for moisture as determined in Test Method D2867,establishes the volatile matter content of the activated carbonsample.5.Significance and Use5.1 Volatile matter,when determined as herein described,may be used as a relative measure of the extent of carboniza-tion in an activated carbon and the extent of loading of volatilematerial on an activated carbon that has been used in anadsorption application.5.2 Combined with other information,the volatile matter ofan activated carbon may be useful in evaluating its perfor-mance in an adsorption application.5.3 Other automated methods for the determination of thevolatile content of solids,such as using a thermogravimetricanalyzer(TGA),can be used in place of this test method withequally reliable results.6.Apparatus6.1 Crucible and Cover,high-temperature porcelain,highform,30 cc capacity.6.2 Oven,forced-air circulation,capable of temperatureregulation up to 250 C.6.3 Moisture Determination Apparatus,as described in TestMethod D2867.6.4 Muffle Furnace,gravity circulation,capable of tempera-ture regulation at 950 6 25 C.An electric furnace similar tothe one described in Test Method D3175 is suitable for use inthis test method.6.5 Desiccator,glass,with indicating type desiccant.6.6 Balance,analytical,capable of 0.1 mg sensitivity.7.Hazards7.1 The furnace used in this test method should be located ina well-ventilated area to eliminate exposure to possible toxicvapors that may evolve from the carbon sample during thehigh-temperature heating.7.2 Exercise care when working with the high-temperaturefurnace to eliminate the possibility of burns.1This test method is under the jurisdiction of ASTM Committee D28 onActivated Carbon and is the direct responsibility of Subcommittee D28.04 on GasPhase Evaluation Tests.Current edition approved June 1,2021.Published June 2021.Originallyapproved in 1995.Last previous edition approved in 2014 as D5832 98(2014).DOI:10.1520/D5832-98R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.18.Procedure8.1 Determine the moisture content of an as-received rep-resentative portion of the sample using the xylene extractionTest Method described in D2867.If the as-received sample iswet,drain it of all free liquid before the representative sampleis taken.8.2 Weigh to 0.1 mg accuracy a crucible and cover that havebeen ignited in a muffle furnace regulated at 950 C for 30 minand cooled in a desiccator.Record the weight.8