ASTM D3467-04

Standard Test Method for Carbon Tetrachloride Activity of Activated Carbon

SIGNIFICANCE AND USE
Activity as measured by this test method is basically a measure of the pore volume of the activated carbon sample. This test method is therefore a means of determining the degree of completion of the activation process, hence a useful means of quality control for gas-phase activated carbons. This activity number does not necessarily provide an absolute or relative measure of the effectiveness of the tested carbon on other adsorbates, or at other conditions of operation.
SCOPE
1.1 This test method covers the determination of the activation level of activated carbon. Carbon tetrachloride (CCl4) activity is defined herein as the ratio (in percent) of the weight of CCl 4 adsorbed by an activated carbon sample to the weight of the sample, when the carbon is saturated with CCl4 under conditions listed in this test method.
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 determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 7.

General Information

• Status: Historical
• Publication Date: 31-Jul-2004
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.04 - Gas Phase Evaluation Tests

Relations

• Replaces: ASTM D3467-99(2003) - Standard Test Method for Carbon Tetrachloride Activity of Activated Carbon
• Effective Date: 01-Aug-2004
• Replaced By: ASTM D3467-04(2009) - Standard Test Method for Carbon Tetrachloride Activity of Activated Carbon
• Effective Date: 01-Apr-2009
• Referred By: ASTM D5742-16 - Standard Test Method for Determination of Butane Activity of Activated Carbon
• Effective Date: 01-Aug-2004
• Referred By: ASTM D5160-95(2019) - Standard Guide for Gas-Phase Adsorption Testing of Activated Carbon
• Effective Date: 01-Aug-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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D 3467–04
Standard Test Method for
1
Carbon Tetrachloride Activity of Activated Carbon
This standard is issued under the fixed designation D 3467; 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,theuseofTestMethodD 5742isrecommended.Thecorrelationobtainedbetweenn-butane
2
activity values and carbon tetrachloride activity values is contained in that test method.
1. Scope 3. Terminology
1.1 This test method covers the determination of the acti- 3.1 Definitions—Terms relating to this test method are
vation level of activated carbon. Carbon tetrachloride (CCl ) defined in Terminology D 2652.
4
activity is defined herein as the ratio (in percent) of the weight
4. Summary of Test Method
of CCl adsorbed by an activated carbon sample to the weight
4
4.1 Activity is determined by flowing CCl -laden air
of the sample, when the carbon is saturated with CCl under
4 4
conditions listed in this test method. through a sample of carbon of known weight, under specified
conditions,untilthereisnofurtherincreaseintheweightofthe
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the sample, then determining the weight of the CCl adsorbed.The
4
apparatus required for the test consists essentially of means to
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- control the supply air pressure, to remove oil and water in both
liquid and vapor states from the supply air, to produce the
bility of regulatory limitations prior to use. Specific hazards
statements are given in Section 7. specified concentration of CCl in the air flowed through the
4
carbon sample, and to control the flow rate of the gas (air +
2. Referenced Documents
CCl ) mixture through the sample.
4
3
2.1 ASTM Standards:
5. Significance and Use
D 2652 Terminology Relating to Activated Carbon
D 2854 Test Method for Apparent Density of Activated 5.1 Activity as measured by this test method is basically a
measure of the pore volume of the activated carbon sample.
Carbon
D 2867 Test Method for Moisture in Activated Carbon Thistestmethodisthereforeameansofdeterminingthedegree
of completion of the activation process, hence a useful means
D 5742 Test Method for the Determination of Butane Ac-
tivity of Activated Carbon of quality control for gas-phase activated carbons.This activity
number does not necessarily provide an absolute or relative
E 300 Practice for Sampling Industrial Chemicals
E 691 Practice for Conducting an Interlaboratory Study to measure of the effectiveness of the tested carbon on other
Determine the Precision of a Test Method adsorbates, or at other conditions of operation.
6. Apparatus and Materials
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This test method is under the jurisdiction of ASTM Committee D28 on
6.1 Carbon Tetrachloride, reagent grade.
Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas
6.2 Supply of Clean, Dry, Oil-Free Air—The air must be
Phase Evaluation Tests.
Current edition approved Aug. 1, 2004. Published September 2004. Originally
passed through a HEPA filter and a bed of activated carbon
approved in 1976. Last previous edition approved in 2003 as D 3467 – 99 (2003).
containing at least 500 mL of carbon per 1670 mL/min of air
2
The data for this correlation is available from ASTM International Headquar-
flow. Relative humidity of the air must be less than 5 % at
ters. Request RR: D 28–1000.
3
25°C.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D 3467–04
6.3 Balance, capable of weighing to within 610 mg. 8. Sampling
6.4 Pressure Regulator.
8.1 Guidance in sampling granular activated carbon is given
6.5 CCl Gas-Generating Device, capable of maintaining a
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in Practice E 300.
CCl concentration of 250 6 10 mg/L in the air stream at a
4
temperature of 25 6 1°C, equivalent to a relative saturation of
9. Calibration
27.5 %. A typical generation device, shown in Fig. 1, consists
9.1 Calibration of thermometers, flowmeters, and balances
of a gas-washing bottle
...