ASTM D3467-04(2009)
(Test Method)Standard Test Method for Carbon Tetrachloride Activity of Activated Carbon
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 CCl4 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 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 determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 7.
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Designation: D3467 − 04(Reapproved 2009)
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 MethodD5742 is recommended.The correlation obtained between n-butane
activity values and carbon tetrachloride activity values is contained in that test method.
1. Scope E300 Practice for Sampling Industrial Chemicals
E691 Practice for Conducting an Interlaboratory Study to
1.1 This test method covers the determination of the acti-
Determine the Precision of a Test Method
vation level of activated carbon. Carbon tetrachloride (CCl )
activity is defined herein as the ratio (in percent) of the weight
3. Terminology
of CCl adsorbed by an activated carbon sample to the weight
3.1 Definitions—Terms relating to this test method are
of the sample, when the carbon is saturated with CCl under
defined in Terminology D2652.
conditions listed in this test method.
1.2 The values stated in SI units are to be regarded as 4. Summary of Test Method
standard. No other units of measurement are included in this
4.1 Activity is determined by flowing CCl -laden air
standard.
through a sample of carbon of known weight, under specified
1.3 This standard does not purport to address all of the
conditions,untilthereisnofurtherincreaseintheweightofthe
safety concerns, if any, associated with its use. It is the
sample, then determining the weight of the CCl adsorbed.The
responsibility of the user of this standard to establish appro-
apparatus required for the test consists essentially of means to
priate safety and health practices and determine the applica-
control the supply air pressure, to remove oil and water in both
bility of regulatory limitations prior to use. Specific hazards
liquid and vapor states from the supply air, to produce the
statements are given in Section 7.
specified concentration of CCl in the air flowed through the
carbon sample, and to control the flow rate of the gas (air +
2. Referenced Documents
CCl ) mixture through the sample.
2.1 ASTM Standards:
5. Significance and Use
D2652 Terminology Relating to Activated Carbon
5.1 Activity as measured by this test method is basically a
D2854 Test Method for Apparent Density of Activated
measure of the pore volume of the activated carbon sample.
Carbon
Thistestmethodisthereforeameansofdeterminingthedegree
D2867 Test Methods for Moisture in Activated Carbon
of completion of the activation process, hence a useful means
D5742 Test Method for Determination of ButaneActivity of
of quality control for gas-phase activated carbons.This activity
Activated Carbon
number does not necessarily provide an absolute or relative
measure of the effectiveness of the tested carbon on other
This test method is under the jurisdiction of ASTM Committee D28 on
adsorbates, or at other conditions of operation.
Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas
Phase Evaluation Tests.
6. Apparatus and Materials
Current edition approved April 1, 2009. Published May 2009. Originally
approved in 1976. Last previous edition approved in 2004 as D3467 – 04. DOI:
6.1 Carbon Tetrachloride, reagent grade.
10.1520/D3467-04R09.
6.2 Supply of Clean, Dry, Oil-Free Air—The air must be
The data for this correlation is available from ASTM International Headquar-
ters. Request RR: D28–1000.
passed through a HEPA filter and a bed of activated carbon
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
containing at least 500 mL of carbon per 1670 mL/min of air
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
flow. Relative humidity of the air must be less than 5 % at
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 25°C.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3467 − 04 (2009)
6.3 Balance, capable of weighing to within 610 mg. the United States Environmental Protection Agency, also
available in the Federal Register.
6.4 Pressure Regulator.
6.5 CCl Gas-Generating Device, capable of maintaining a
8. Sampling
CCl concentration of 250 6 10 mg/L in the air stream at a
8.1 Guidance in sampling granular activated carbon is given
temperature of 25 6 1°C, equivalent to a relative saturation of
in Practice E300.
27.5 %. A typical generation device, shown in Fig. 1, consists
of a gas-washing bottle and a refrigerated bath capable of
9. Calibration
maintaining a bath temperature of 0°C. See also Table 1.
9.1 Calibration of thermometers, flowmeters, and balances
6.6 Stopcock, three-way.
shall be maintained by standard laboratory methods. The
6.7 Regulating Valve, needle valve, flowmeter, and clock.
concentration of CCl in the gas stream is determined as
6.8 Adsorption Tube having the critical dimensions shown
described in 11.2.
in Fig. 1.
10. Procedure
6.9 Thermostat, capable of maintaining the CCl -laden air
stream and sample tube at a temperature of 25 6 1°C.
10.1 Dry the sample using the procedure described in Test
Method D2867.
7. Hazards
10.2 Weigh the dry sample tube to nearest the 10 mg and
7.1 Carbon tetrachloride vapor is toxic and should not be
record the weight.
inhaled. It is advisable to handle carbon tetrachloride and the
10.3 Fill the sample tube to the 100-mm mark 61 mm,
test equipment described in this test method in a well-designed
using the vibratory feeder described in Test Method D2854.
chemicalfume-hood.Themostrecentregulationsissuedbythe
Isolate the s
...
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:D 3467–99 (Reapproved2003) Designation: D 3467 – 04 (Reapproved 2009)
Standard Test Method for
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 has been identified as a potential contributor to stratospheric ozone depletion.
Amendments to the Montreal Protocol in 1990 mandate the global phase-out of carbon tetrachloride
production by the year 2000. The 1990 Amendments to the U.S. Clean Air Act were even more
aggressive, accelerating the U.S. phase-out deadline to the mid-1990’s. A small amount of carbon
tetrachloride will still be produced for critical industrial applications; however, in 1993 carbon
tetrachloride will not be available for laboratory purposes. With these developments, use of this test
method is not recommended.
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
activity values and carbon tetrachloride activity values is contained in that test method.
1. Scope
1.1 This test method covers the determination of the activation level of activated carbon. Carbon tetrachloride (CCl ) activity
isdefinedhereinastheratio(inpercent)oftheweightofCCl adsorbedbyanactivatedcarbonsampletotheweightofthesample,
when the carbon is saturated with CCl under conditions listed in this test method.
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 determine the applicability of regulatory
limitations prior to use. Specific hazards statements are given in Section 7.
2. Referenced Documents
2.1 ASTM Standards:
D 2652 Terminology Relating to Activated Carbon
D 2854 Test Method for Apparent Density of Activated Carbon
D 2867 Test Methods for Moisture in Activated Carbon
D 5742 Test Method for the Determination of Butane Activity of Activated Carbon
E 300 Practice for Sampling Industrial Chemicals
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions—Terms relating to this test method are defined in Terminology D 2652.
4. Summary of Test Method
4.1 Activity is determined by flowing CCl -laden air through a sample of carbon of known weight, under specified conditions,
until there is no further increase in the weight of the sample, then determining the weight of the CCl adsorbed. The apparatus
This test method is under the jurisdiction of ASTM Committee D28 on Activated Carbon and is the direct responsibility of Subcommittee D28.04 on Gas Phase
Evaluation Tests.
Current edition approved OctoberApril 1, 2003.2009. Published November 2003.May 2009. Originally approved in 1976. Last previous edition approved in 19992004 as
D3467–99.D 3467 – 04.
The data for this correlation is available from ASTM International Headquarters. Request RR: D 28–1000.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM 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.
D 3467 – 04 (2009)
requiredforthetestconsistsessentiallyofmeanstocontrolthesupplyairpressure,toremoveoilandwaterinbothliquidandvapor
statesfromthesupplyair,toproducethespecifiedconcentrationofCCl intheairflowedthroughthecarbonsample,andtocontrol
the flow rate of the gas (air + CCl ) mixture through the sample.
5. Significance and Use
5.1 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.
6. Apparatus and Materials
6.1 Carbon Tetrachloride, reagent grade.
6.2 Supply of Clean, Dry, Oil-Free Air—The air must be passed through a HEPAfilter and a bed of activated carbon containing
at least 500 mL of carbon per 1670 mL/min of air flow. Relative humidity of the air must be less than 5 % at 25°C.
6.3 Balance, capable of weighing to within 610 mg.
6.4 Pressure Regulator.
6.5 CCl Gas-Generating Device, capable of maintaining a CCl concentration of 250 6 10 mg/L in the air stream at a
4 4
temperature of 25 6 1°C, equivalent to a relative saturation of 27.5 %. A typical generation device, shown in Fig. 1, consists of
a gas-washing bottle and a refrigerated bath capable of maintaining a bath temperature of 0°C. See also Table 1.
6.6 Stopcock, three-way.
6.7 Regulating Valve, needle valve, flowmeter, and clock.
6.8 Adsorption Tube having the critical dimensions shown in Fig. 1.
6.9 Thermostat, capable of maintaining the CCl -laden air stream and sample tube at a temperature of 25 6 1°C.
7. Hazards
7.1 Carbon tetrachloride vapor is toxic and should not be inhaled. It is advisable to handle carbon tetrachloride and the test
equipment described in this test method in a well-designed chemical fume-hood. The most recent regulations issued by the
OccupationalSafetyandHealthAdministrationandpublishedintheFederalRegistershouldbefollowedwithregardstoallowable
human exposure. The most recently obtained Material Safety Data
...
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