ASTM D2866-11

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: 30-Apr-2011
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.04 - Gas Phase Evaluation Tests

Relations

• Replaces: ASTM D2866-94(2004) - Standard Test Method for Total Ash Content of Activated Carbon
• Effective Date: 01-May-2011
• Replaced By: ASTM D2866-11(2018) - Standard Test Method for Total Ash Content of Activated Carbon
• Effective Date: 01-Jun-2018
• Referred By: ASTM D6385-22 - Standard Test Method for Determining Acid-Extractable Content in Activated Carbon by Ashing
• Effective Date: 01-May-2011
• Referred By: ASTM E1568-21 - Standard Test Method for Determination of Gold in Activated Carbon by Fire Assay Gravimetry
• Effective Date: 01-May-2011
• Referred By: ASTM D4069-95(2020) - Standard Specification for Impregnated Activated Carbon Used to Remove Gaseous Radio-Iodines from Gas Streams
• Effective Date: 01-May-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 − 11
Standard Test Method for
1
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 4.2 Other automated methods for determination of ash
content, such as combusting the carbon in a thermogravimetric
1.1 This test method describes a procedure for the determi-
analyzer (TGA) in flowing air or oxygen, can be used in place
nation of total ash content of activated carbon.
of this test method. A suitable method is described in Test
1.2 The values stated in SI units are to be regarded as
Method D7582. For determination of the ash content of
standard. No other units of measurement are included in this
activated carbon, follow the procedure in 13.5.3 of Test
standard.
Method D7582 with the exception that the furnace temperature
1.3 This standard does not purport to address all of the
in 13.4.3 shall be 650 625°C.The muffle furnace method shall
safety concerns, if any, associated with its use. It is the
be considered the reference test method.
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and deterrmine the applica-
bility of regulatory limitations prior to use. 5.1 Muffle Furnace, having air circulation, capable of tem-
perature regulation of 625°C at 650°C.
2. Referenced Documents
5.2 High-Temperature Crucible, high-form.
2
2.1 ASTM Standards:
5.3 Analytical Balance, having a sensitivity of 0.1 mg.
D2867 Test Methods for Moisture in Activated Carbon
D7582 Test Methods for Proximate Analysis of Coal and
5.4 Desiccator.
Coke by Macro Thermogravimetric Analysis
5.5 Oven, forced-air circulation, capable of temperature
E177 Practice for Use of the Terms Precision and Bias in
regulation between 145 and 155°C.
ASTM Test Methods
6. Procedure
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
6.1 Ignite the crucible in the muffle furnace at 650 6 25°C
for 1 h. Place the crucible in the desiccator. Cool to room
3. Summary of Test Method
temperature and weigh to the nearest 0.1 mg.
3.1 An accurately weighed sample of dried activated carbon
6.2 Dry an adequate sample of activated carbon to constant
is placed in a controlled-temperature muffle furnace for a
weight (60.5 mg) at 150 65°C (3 h is usually sufficient).
period of several hours. When constant weight has been
achieved (60.5 mg), the crucible is cooled to ambient tem- NOTE 1—Some carbons can ignite spontaneously at 150°C. In this case,
moist carbon should be used with a correction for moisture (in accordance
peratureinadesiccatorandreweighed.Theweightoftheashed
with Methods D2867) applied in the calculations. In this case, the ashing
carbon is expressed as a percentage of the weight of the
should be started in a cold muffle furnace.
original carbon sample.
6.3 Weigh out to the nearest 0.1 mg sufficient dried acti-
4. Significance and Use
vated carbon, so that the estimated amount of ash will be 0.1 g,
4.1 In specific end uses, the amount and composition of the into the ignited crucible and place the crucible in the furnace at
650 6 25°C.Ashing will require from 3 to 16 h, depending on
ash may influence the capabilities and certain desired proper-
ties of activated carbon. thesizeandtypeofactivatedcarbon.Ashingcanbeconsidered
complete when constant weight (60.5 mg) is achieved.
1
This test method is under the jurisdiction of ASTM Committee D28 on
6.4 Place the crucible in the desiccator and allow to cool to
Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas
room temperature. After the sample has cooled in the
Phase Evaluation Tests.
desiccator, admit air slowly to avoid loss of ash from the
Current edition approved May 1, 2011. Published June 2011. Originally
approved in 1970. Last previous edition approved in 2004 as D2866 – 94 (2004).
crucible. Weigh to the nearest 0.1 mg.
DOI: 10.1520/D2866-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Calculation
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.1 Calculate the ash content as follows:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D2866 − 11
3
TABLE 1 Precision
8. Precision and Bias
Material A B C
8.1 Precision:
Average Test Value 7.74 1.88 4.61
8.1.1 Interlaboratory Tes
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D2866–94 (Reapproved 2004) Designation:D2866–11
Standard Test Method for
1
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
1.1 This test method describes a procedure for the determination of total ash content of activated carbon.
1.2
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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 deterrmine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D2867 Test Methods for Moisture in Activated Carbon
D7582 Test Methods for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Summary of Test Method
3.1 An accurately weighed sample of dried activated carbon is placed in a controlled-temperature muffle furnace for a period
of several hours.When constant weight has been achieved (60.5 mg), the crucible is cooled to ambient temperature in a desiccator
and reweighed. The weight of the ashed carbon is expresesed as a percentage of the weight of the original carbon sample.
4. Significance and Use
4.1 In specific end uses, the amount and composition of the ash may influence the capabilities and certain desired properties
of activated carbon.
4.2 Other automated methods for determination of ash content, such as combusting the carbon in a thermogravimetric analyzer
(TGA) in flowing air or oxygen, can be used in place of this test method. A suitable method is described in Test Method D7582.
For determination of the ash content of activated carbon, follow the procedure in 13.5.3 of Test Method D7582 with the exception
that the furnace temperature in 13.4.3 shall be 650 625°C. The muffle furnace method shall be considered the reference test
method.
5. Apparatus
5.1 Muffle Furnace, having air circulation, capable of temperature regulation of 625°C at 650°C.
5.2 High-Temperature Crucible, high-form.
5.3 Analytical Balance, having a sensitivity of 0.1 mg.
5.4 Desiccator.
5.5 Oven, forced-air circulation, capable of temperature regulation between 145 and 155°C.
6. Procedure
6.1 Ignitethecrucibleinthemufflefurnaceat650 625°Cfor1h.Placethecrucibleinthedesiccator.Cooltoroomtemperature
and weigh to the nearest 0.1 mg.
6.2 Dry an adequate sample of activated carbon to constant weight (60.5 mg) at 150 65°C (3 h is usually sufficient).
1
This test method is under the jurisidiction of ASTM Committee D28 on Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas Phase
Evaluation Tests.
Current edition approved AprilMay 1, 2004.2011. Published June 2004.2011. Originally approved in 1970. Last previous edition approved in 19992004 as D2866 – 94
(1999).(2004). DOI: 10.1520/D2866-94R04.10.1520/D2866-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D2866–11
NOTE 1—Some carbons can ignite spontaneously at 150°C. In this case, moist carbon should be used with a correction for moisture (in accordance
with Methods D2867) applied in the calculations. In this case, the ashing should be started in a cold muffle furnace.
6.3 Weigh out to the nearest 0.1 mg sufficient dried activated carbon, so that the estimated amount of ash will be 0.1 g, into the
ignited crucible and place the crucible in the furnace at 650 6 25°C. Ashing will require from 3 to 16 h, depending on the size
and type of activated carbon. Ashing can be considered complete when constant weight (60.5 mg) is achieved.
6.4 Place the crucible in the desiccator and allow to
...