ASTM D5158-98(2019)

Standard Test Method for Determination of Particle Size of Powdered Activated Carbon by Air-Jet Sieving

SIGNIFICANCE AND USE
5.1 The particle size of powdered activated carbon is sometimes used to evaluate filter cake filtration rates and the filter penetration in filtering applications. The selection and handling of powdered activated carbon, and operation of processes using powdered activated carbon, requires the knowledge of the particle size.  
Note 1: Relative humidity (RH) can affect the repeatability and accuracy of this test. Activated carbon not at equilibrium with the RH of the ambient air may lose or gain weight accordingly, dependent upon whether or not the carbon picks up or loses moisture.
SCOPE
1.1 This test method covers the determination of the particle size of powdered activated carbons using an air-jet sieve device. For purposes of this test method, powdered activated carbon is defined as activated carbon in particle sizes predominantly smaller than 80 mesh.  
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2019
• ICS: 19.120 - Particle size analysis. Sieving
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.02 - Liquid Phase Evaluation

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5158 − 98 (Reapproved 2019)
Standard Test Method for
Determination of Particle Size of Powdered Activated
Carbon by Air-Jet Sieving
This standard is issued under the fixed designation D5158; 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 3. Terminology
1.1 This test method covers the determination of the particle 3.1 Definitions—Terms relating to this test method are
defined in Terminology D2652.
size of powdered activated carbons using an air-jet sieve
device. For purposes of this test method, powdered activated
4. Summary of Test Method
carbon is defined as activated carbon in particle sizes predomi-
4.1 A weighed sample of as-received powdered activated
nantly smaller than 80 mesh.
carbon is placed in a test sieve that is inserted in the sieve
1.2 The values stated in SI units are to be regarded as the
holder of the air-jet sieve assembly. Air is passed through the
standard. The inch-pound units given in parentheses are for
sieve from a slowly rotating nozzle to fluidize the sample for a
information only.
given period of time. Exit airflow removes undersized particles
1.3 This standard does not purport to address all of the
downward through the test sieve to a collection canister. The
safety concerns, if any, associated with its use. It is the
amount of carbon retained on the test sieve is weighed and the
responsibility of the user of this standard to establish appro-
percent passing the test sieve is computed by difference. For a
priate safety, health, and environmental practices and deter-
particle size distribution, the test must be repeated using sieves
mine the applicability of regulatory limitations prior to use.
with different openings.
1.4 This international standard was developed in accor-
5. Significance and Use
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 5.1 The particle size of powdered activated carbon is
Development of International Standards, Guides and Recom- sometimes used to evaluate filter cake filtration rates and the
mendations issued by the World Trade Organization Technical filter penetration in filtering applications. The selection and
Barriers to Trade (TBT) Committee. handling of powdered activated carbon, and operation of
processes using powdered activated carbon, requires the
2. Referenced Documents knowledge of the particle size.
2.1 ASTM Standards: NOTE 1—Relative humidity (RH) can affect the repeatability and
accuracy of this test. Activated carbon not at equilibrium with the RH of
D2652 Terminology Relating to Activated Carbon
the ambient air may lose or gain weight accordingly, dependent upon
E11 Specification for Woven Wire Test Sieve Cloth and Test
whether or not the carbon picks up or loses moisture.
Sieves
6. Apparatus
E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
6.1 Air-Jet Sieve Assembly.
E300 Practice for Sampling Industrial Chemicals
6.2 Wire Cloth Sieves, bronze or stainless steel (stainless
E691 Practice for Conducting an Interlaboratory Study to
steel sieves preferred), 200 and 325 mesh, in accordance with
Determine the Precision of a Test Method
Specification E11. The sieves shall be 203 mm (8 in.) in
diameter.
6.3 Brush, soft bristle.
This test method is under the jurisdiction of ASTM Committee D28 on
Activated Carbon and is the direct responsibility of Subcommittee D28.02 on Liquid
6.4 Balance, with a sensitivity of 1.0 mg.
Phase Evaluation.
6.5 Ultrasonic Bath, capable of cleaning 203-mm (8-in.)
Current edition approved Aug. 1, 2019. Published August 2019. Originally
approved in 1991. Last previous edition approved in 2013 as D5158 – 98 (2013). diameter sieves.
DOI: 10.1520/D5158-98R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Sampling
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.1 Activated carbon is not strictly a chemically and physi-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cally homogeneous material. To enable performing meaningful
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5158 − 98 (2019)
tests within the stated tolerances of the ASTM test methods, it ~S 2 R!
P, % passing5 3 100
is essential that sampling be performed to obtain as represen- S
tative a sample as possible. When a small amount of sample
where
represents tons of material, the collection, mixing, and prepa-
P = percent of sample passing through the test sieve,
ration of samples is extremely important. The practice de-
R = weight of sample remaining on test sieve, g, and
scribed in Practice E300 is suitable to ensure that sampling and
S = weight of sample used, g.
sample preparation of activated carbon is appropriate for the
performance of this test method. In absence of following
10. Report
Practice E300, a
...

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: D5158 − 98 (Reapproved 2013) D5158 − 98 (Reapproved 2019)
Standard Test Method for
Determination of Particle Size of Powdered Activated
Carbon by Air Jet Air-Jet Sieving
This standard is issued under the fixed designation D5158; 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 covers the determination of the particle size of powdered activated carbons using an air-jet sieve device.
For purposes of this test method, powdered activated carbon is defined as activated carbon in particle sizes predominantly smaller
than 80 mesh.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for
information only.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
D2652 Terminology Relating to Activated Carbon
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E300 Practice for Sampling Industrial Chemicals
E691 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 D2652.
3.1 Definitions—Terms relating to this test method are defined in Terminology D2652.
4. Summary of Test Method
4.1 A weighed sample of as-received powdered activated carbon is placed in a test sieve that is inserted in the sieve holder of
the air-jet sieve assembly. Air is passed through the sieve from a slowly-rotating slowly rotating nozzle to fluidize the sample for
a given period of time. Exit air flow airflow removes undersized particles downward through the test sieve to a collection canister.
The amount of carbon retained on the test sieve is weighed and the percent passing the test sieve is computed by difference. For
a particle size distribution, the test must be repeated using sieves with different openings.
5. Significance and Use
5.1 The particle size of powdered activated carbon is sometimes used to evaluate filter cake filtration rates and the filter
penetration in filtering applications. The selection and handling of powdered activated carbon, and operation of processes using
powdered activated carbon, requires the knowledge of the particle size.
This test method is under the jurisdiction of ASTM Committee D28 on Activated Carbon and is the direct responsibility of Subcommittee D28.02 on Liquid Phase
Evaluation.
Current edition approved Nov. 1, 2013Aug. 1, 2019. Published December 2013August 2019. Originally approved in 1991. Last previous edition approved in 20052013
as D5158 – 98 (2005).(2013). OI: 10.1520/D5158-98R13.DOI: 10.1520/D5158-98R19.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5158 − 98 (2019)
NOTE 1—Relative humidity (RH) can affect the repeatability and accuracy of this test. Activated carbon not at equilibrium with the RH of the ambient
air may lose or gain weight accordingly, dependent upon whether or not the carbon picks up or loses moisture.
6. Apparatus
6.1 Air-Jet Sieve Assembly.
6.2 Wire Cloth Sieves, bronze or stainless steel (stainless steel sieves preferred), 200 and 325 mesh, in accordance with
Specification E11. The sieves shall be 203 mm (8 in.) in diameter.
6.3 Brush, soft bristle.
6.4 Balance, with a sensitivity of 1.0 mg.
6.5 Ultrasonic Bath, capable of cleaning 203-mm (8-in.) diameter sieves.
7. Sampling
7.1 Activated carbon is not strictly a chemically and physically homogeneous material. To enable performing meaningful tests
within the stated tolerances of the ASTM test methods, it is essential that sampling be performed to obtain as representative a
sample as possible. When a small amount of sample represents tons of material, the collection, mixing, and preparation of samples
is extremely important. The practice described in Practice E300 is suitable to ensure that sampling and sample preparation of
activated carbon is appropriate for the performance of this test method. In absence of following Practice E300, a detailed specific
sampling a
...