ASTM D6385-99

Standard Test Method for Determining Acid Extractable Content in Activated Carbon by Ashing

SCOPE
1.1 This test method is to be used for determination of the acid extractable content of a sample of activated carbon. This test method presupposes the existence of substances other than carbon to be present with activated carbon but does not purport to address or identify those substances which may be present. This test method should be applicable to any form in which activated carbon may exist and requries the performance of Test Method D2866.
1.2 This test method requires the use of concentrated hydrochloric acid, which should be used in an appropriate and safe manner, with eye protection, skin protection and handling carried out in a properly operating fume hood. The proper use of a muffle furnace is addressed in Test Method D2866.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Feb-1999
• ICS: 73.040 - Coals
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.02 - Liquid Phase Evaluation

Relations

• Replaced By: ASTM D6385-99(2006) - Standard Test Method for Determining Acid Extractable Content in Activated Carbon by Ashing
• Effective Date: 01-Oct-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D6385–99
Standard Test Method for
Determining Acid Extractable Content in Activated Carbon
by Ashing
This standard is issued under the fixed designation D 6385; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method is to be used for determination of the 4.1 The quantitative determination of acid extractable con-
acid extractable content of a sample of activated carbon. This tent is useful in evaluating activated carbon samples that
test method presupposes the existence of substances other than contain acid soluble impurities. These acid soluble impurities
carbon to be present with activated carbon but does not purport can affect applications of activated carbon.
to address or identify those substances which may be present. 4.2 Limitations of Method—Hydrochloric acid is used in
This test method should be applicable to any form in which this test method as the extracting acid. All elements or
activated carbon may exist and requires the performance of compounds present in the activated carbon sample, which can
Test Method D 2866. be acid extracted, are assumed to form water soluble chloride
1.2 This test method requires the use of concentrated salts. Hydrochloric acid may not solubilize all impurities of
hydrochloric acid, which should be used in an appropriate and activated carbon.
safe manner, with eye protection, skin protection and handling
5. Apparatus
carried out in a properly operating fume hood. The proper use
of a muffle furnace is addressed in Test Method D 2866. 5.1 250-mL Glass Beakers, for boiling and drying the
sample.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5.2 Watch Glass, suitable for 250-mL beaker.
5.3 Graduated Cylinders, of 100-mL(TD) and 25-mL(TD)
responsibility of the user of this standard to establish appro-
priate safety and health practices and determines the applica- size.
5.4 BuchnerVacuumFunnel,7-cmIDorequivalentfiltering
bility of regulatory limitations prior to use.
device.
2. Referenced Documents
5.5 Vacuum Filter Flask, with side arm, 500 mL.
2.1 ASTM Standards: 5.6 Vacuum Filter Collar, for the above filter flask.
D 1193 Specification for Reagent Water 5.7 Filter Paper, which is hardened, ashless paper, # 8
D 2866 Test Method for Total Ash Content of Activated micron pore size and 7 cm in diameter is recommended, or a
Carbon diameter which matches the vacuum funnel. The paper will be
D 2867 Test Method for Moisture in Activated Carbon ashed with the carbon, so ashless paper is necessary.
E 300 Practice for Sampling Industrial Chemicals 5.8 Drying Oven, maintained at 150° C 6 5°C.
5.9 Muffle Furnace, as specified in Test Method D 2866.
3. Summary of Test Method
5.10 Porcelain Crucibles, as specified in Test Method
3.1 The percent acid extractable content of an activated D 2866.
carbon sample is determined by the difference between the
5.11 Desicator, containing indicating silica gel or any other
percent mass of total ash of a sample and the percent mass of desicant, which is effective in maintaining dryness of cooling
total ash of a sample which has been acid extracted.
hot crucibles or oven dried carbon samples.
5.12 Balance, capable of measurement of 0.1 mg.
5.13 CarbonParticleSizeReduction,amortarandpestle,or
This test method is under the jurisdiction of ASTM Committee D-28 on
any other means of systematically reducing activated carbon
ActivatedCarbonandisthedirectresponsibilityofSubcommitteeD28.02onLiquid
particle size to pass through a No. 325 U.S. mesh screen. The
Phase Evaluation.
Current edition approved Feb. 10, 1999. Published May 1999. size reduction device must be constructed of material that will
Annual Book of ASTM Standards, Vol 11.01.
not contaminate the carbon sample with acid soluble materials.
Annual Book of ASTM Standards, Vol 15.01.
Annual Book of ASTM Standards, Vol 15.05.
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D6385–99
5.14 No. 325 U.S. Mesh Screen, for sieving the sample after 8.8 Vacuum filter the mixt
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