ASTM D3467-04(2020)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3467 − 04 (Reapproved 2020)
Standard Test Method for
Carbon Tetrachloride Activity of Activated Carbon
This standard is issued under the fixed designation D3467; 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.
INTRODUCTION
Carbon tetrachloride is classified as a Class I ozone-depleting substance by the U.S. Environmental
Protection Agency. Therefore, use of this test method is discouraged.
Instead, the use ofTest Method D5742 is recommended.The correlation obtained between n-butane
activity values and carbon tetrachloride activity values is contained in that test method.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This test method covers the determination of the acti-
D2652 Terminology Relating to Activated Carbon
vation level of activated carbon. Carbon tetrachloride (CCl )
D2854 Test Method for Apparent Density of Activated
activity is defined herein as the ratio (in percent) of the weight
Carbon
of CCl adsorbed by an activated carbon sample to the weight
D2867 Test Methods for Moisture in Activated Carbon
of the sample, when the carbon is saturated with CCl under
D5742 Test Method for Determination of ButaneActivity of
conditions listed in this test method.
Activated Carbon
1.2 The values stated in SI units are to be regarded as
E300 Practice for Sampling Industrial Chemicals
standard. No other units of measurement are included in this
E691 Practice for Conducting an Interlaboratory Study to
standard. Determine the Precision of a Test Method
1.3 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.1 Definitions—Terms relating to this test method are
defined in Terminology D2652.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Summary of Test Method
Specific hazards statements are given in Section 7.
1.4 This international standard was developed in accor-
4.1 Activity is determined by flowing CCl -laden air
dance with internationally recognized principles on standard-
through a sample of carbon of known weight, under specified
ization established in the Decision on Principles for the conditions,untilthereisnofurtherincreaseintheweightofthe
Development of International Standards, Guides and Recom- sample, then determining the weight of the CCl adsorbed.The
apparatus required for the test consists essentially of means to
mendations issued by the World Trade Organization Technical
control the supply air pressure, to remove oil and water in both
Barriers to Trade (TBT) Committee.
liquid and vapor states from the supply air, to produce the
specified concentration of CCl in the air flowed through the
carbon sample, and to control the flow rate of the gas (air +
This test method is under the jurisdiction of ASTM Committee D28 on
CCl ) mixture through the sample.
Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas
Phase Evaluation Tests.
Current edition approved Jan. 1, 2020. Published January 2020. Originally
approved in 1976. Last previous edition approved in 2014 as D3467 – 04 (2014).
DOI: 10.1520/D3467-04R20. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Supporting data have been filed at ASTM International Headquarters and may contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
beobtainedbyrequestingResearchReportRR:D28-1000.ContactASTMCustomer Standards volume information, refer to the standard’s Document Summary page on
Service at service@astm.org. the ASTM website.
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D3467 − 04 (2020)
5. Significance and Use 6.8 Adsorption Tube, having the critical dimensions shown
in Fig. 1.
5.1 Activity as measured by this test method is basically a
measure of the pore volume of the activated carbon sample. 6.9 Thermostat, capable of maintaining the CCl -laden air
Thistestmethodisthereforeameansofdeterminingthedegree stream and sample tube at a temperature of 25 6 1 °C.
of completion of the activation process, hence a useful means
7. Hazards
of quality control for gas-phase activated carbons.This activity
number does not necessarily provide an absolute or relative
7.1 Carbon tetrachloride vapor is toxic and should not be
measure of the effectiveness of the tested carbon on other inhaled. It is advisable to handle carbon tetrachloride and the
adsorbates, or at other conditions of operation.
test equipment described in this test method in a well-designed
chemical fume hood.The most recent regulations issued by the
6. Apparatus and Materials
Occupational Safety and Health Administration and published
in the Federal Register should be followed with regard to
6.1 Carbon Tetrachloride, reagent grade.
allowable human exposure. The most recently obtained Mate-
6.2 Supply of Clean, Dry, Oil-Free Air—The air must be
rial Safety Data Sheet (MSDS) obtained from the supplier or
passed through a HEPA filter and a bed of activated carbon
manufacturer of the carbon tetrachloride should be available as
containing at least 500 mL of carbon per 1670 mL/min of air
aguide,aswell.Acceptableconcentrationsofcarbontetrachlo-
flow. Relative humidity of the air must be less than 5 % at
ride for stack release also should conform to the regulations of
25 °C.
the United States Environmental Protection Agency, also
6.3 Balance, capable of weighing to within 610 mg.
available in the Federal Register.
6.4 Pressure Regulator.
8. Sampling
6.5 CCl Gas-Generating Device, capable of maintaining a
8.1 Guidance in sampling granular activated carbon is given
CCl concentration of 250 6 10 mg/L in the air stream at a
in Practice E300.
temperature of 25 6 1 °C, equivalent to a relative saturation of
27.5 %. A typical generation device, shown in Fig. 1, consists
9. Calibr
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