ASTM D2866-94(2004)

Standard Test Method for Total Ash Content of Activated Carbon

SIGNIFICANCE AND USE
In specific end uses, the amount and composition of the ash may influence the capabilities and certain desired properties of activated carbon.
SCOPE
1.1 This test method describes a procedure for the determination of total ash content of activated carbon.
1.2 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 deterrmine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Mar-2004
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.04 - Gas Phase Evaluation Tests

Relations

• Replaces: ASTM D2866-94(1999) - Standard Test Method for Total Ash Content of Activated Carbon
• Effective Date: 01-Apr-2004
• Replaced By: ASTM D2866-11 - Standard Test Method for Total Ash Content of Activated Carbon
• Effective Date: 01-May-2011
• Referred By: ASTM D6385-22 - Standard Test Method for Determining Acid-Extractable Content in Activated Carbon by Ashing
• Effective Date: 01-Apr-2004
• Referred By: ASTM E1568-21 - Standard Test Method for Determination of Gold in Activated Carbon by Fire Assay Gravimetry
• Effective Date: 01-Apr-2004
• Referred By: ASTM D4069-95(2020) - Standard Specification for Impregnated Activated Carbon Used to Remove Gaseous Radio-Iodines from Gas Streams
• Effective Date: 01-Apr-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2866–94 (Reapproved 2004)
Standard Test Method for
Total Ash Content of Activated Carbon
This standard is issued under the fixed designation D2866; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5.3 Analytical Balance, having a sensitivity of 0.1 mg.
5.4 Desiccator.
1.1 This test method describes a procedure for the determi-
5.5 Oven, forced-air circulation, capable of temperature
nation of total ash content of activated carbon.
regulation between 145 and 155°C.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Procedure
responsibility of the user of this standard to establish appro-
6.1 Ignite the crucible in the muffle furnace at 6506 25°C
priate safety and health practices and deterrmine the applica-
for 1 h. Place the crucible in the desiccator. Cool to room
bility of regulatory limitations prior to use.
temperature and weigh to the nearest 0.1 mg.
2. Referenced Documents 6.2 Dry an adequate sample of activated carbon to constant
2 weight at 150 6 5°C (3 h is usually sufficient).
2.1 ASTM Standards:
D2867 Test Methods for Moisture in Activated Carbon
NOTE 1—Somecarbonscanignitespontaneouslyat150°C.Inthiscase,
E177 Practice for Use of the Terms Precision and Bias in
moist carbon should be used with a correction for moisture (in accordance
with Methods D2867) applied in the calculations. In this case, the ashing
ASTM Test Methods
should be started in a cold muffle furnace.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
6.3 Weigh out to the nearest 0.1 mg sufficient dried acti-
vated carbon, so that the estimated amount of ash will be 0.1 g,
3. Summary of Test Method
into the ignited crucible and place the crucible in the furnace at
3.1 An accurately weighed sample of dried activated carbon
650 6 25°C.Ashing will require from 3 to 16 h, depending on
is placed in a controlled-temperature muffle furnace for a
thesizeandtypeofactivatedcarbon.Ashingcanbeconsidered
period of several hours. When constant weight has been
complete when constant weight is achieved.
achieved, the crucible is cooled to ambient temperature in a
6.4 Place the crucible in the desiccator and allow to cool to
desiccator and reweighed. The weight of the ashed carbon is
room temperature. After the sample has cooled in the desicca-
expresesed as a percentage of the weight of the original carbon
tor, admit air slowly to avoid loss of ash from the crucible.
sample.
Weigh to the nearest 0.1 mg.
4. Significance and Use
7. Calculation
4.1 In specific end uses, the amount and composition of the
7.1 Calculate the ash content as follows:
ash may influence the capabilities and certain desired proper-
Total ash, % 5 [~D 2 B!/~C 2 B!# 3 100 (1)
ties of activated carbon.
5. Apparatus
where:
B = weight of crucible, g,
5.1 Muffle Furnace, having air circulation, capable of tem-
C = weight of crucible plus original sample, g, and
perature regulation of 625°C at 650°C.
D = weight of crucible plus ashed sample, g.
...