ASTM D7385-13

Standard Guide for Estimating Carbon Saturation by Temperature Rise upon Immersion

SIGNIFICANCE AND USE
5.1 It is often useful to estimate the degree of saturation, and hence the expected remaining service life, of activated carbon that has been in use for some time. This guide is applicable when such information must be obtained fairly rapidly under field conditions without access to optimal analytical instruments.3
SCOPE
1.1 This guide covers the measurement of the temperature rise resulting from the heat of immersion when a known mass of a specified organic liquid is added to a sample of activated carbon. If the carbon has been in use as an adsorbent and may therefore be partially or fully exhausted, its degree of saturation may be estimated by comparing its temperature rise with that of an unused sample of the same activated carbon.  
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.

General Information

• Status: Historical
• Publication Date: 31-Aug-2013
• ICS: 07.030 - Physics. Chemistry
• Technical Committee: D28 - Activated Carbon
• Drafting Committee: D28.04 - Gas Phase Evaluation Tests

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7385 − 13
Standard Guide for
Estimating Carbon Saturation by Temperature Rise upon
1
Immersion
This standard is issued under the fixed designation D7385; 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 provided with means to measure the liquid temperature. The
apparatus is sealed after the addition of the carbon and the
1.1 This guide covers the measurement of the temperature
maximum rise in temperature is recorded. The degree of
rise resulting from the heat of immersion when a known mass
saturation of a used carbon is estimated by comparing its
of a specified organic liquid is added to a sample of activated
temperature rise with that of the original unused activated
carbon. If the carbon has been in use as an adsorbent and may
carbon of equivalent moisture content, measured under the
therefore be partially or fully exhausted, its degree of satura-
same conditions. If no such reference sample is available, a
tion may be estimated by comparing its temperature rise with
commercial unused activated carbon of the same physical type
that of an unused sample of the same activated carbon.
from a reputable manufacturer may be substituted; such
1.2 The values stated in SI units are to be regarded as
substitution should be noted in the report.
standard. No other units of measurement are included in this
standard. 5. Significance and Use
1.3 This standard does not purport to address all of the
5.1 It is often useful to estimate the degree of saturation,
safety concerns, if any, associated with its use. It is the
and hence the expected remaining service life, of activated
responsibility of the user of this standard to establish appro-
carbon that has been in use for some time. This guide is
priate safety and health practices and determine the applica-
applicable when such information must be obtained fairly
bility of regulatory limitations prior to use.
rapidly under field conditions without access to optimal ana-
3
lytical instruments.
2. Referenced Documents
2
6. Apparatus and Materials
2.1 ASTM Standards:
D2652 Terminology Relating to Activated Carbon
6.1 Apparatus—The apparatus should consist of a container
D2854 Test Method for Apparent Density of Activated
such as a small bottle or flask to accommodate the carbon, the
Carbon
organic liquid, and a thermometer or thermocouple with a
D2867 Test Methods for Moisture in Activated Carbon
range to allow for a temperature rise of up to about 30 ºC,
E300 Practice for Sampling Industrial Chemicals
graduated in intervals of 0.5 ºC, with facility to interpolate to
60.1 ºC. A liquid-in-glass thermometer should not use
3. Terminology
mercury, because of the greater risk of breakage under field
conditions. The container should be provided with a rubber
3.1 Terms related to this guide are defined in Terminology
D2652. stopper or other suitable closure to seal the contents after the
carbon has been added to the organic liquid. Appropriate
4. Summary of Guide
containers include an Erlenmeyer or Florence flask of about
125 to 250 mL capacity or a similar-sized narrow-necked
4.1 A measured volume of activated carbon is added to a
bottle.
known volume of a selected organic liquid in a container
6.2 Materials—Many organic liquids that are insoluble in
water but readily soluble in other adsorbates that may already
1
This guide is under the jurisdiction of ASTM Committee D28 on Activated
be on the carbon are potentially useful. Those that have been
Carbonand is the direct responsibility of Subcommittee D28.04 on Gas Phase
Evaluation Tests.
tried include mineral oil, hexane, cyclohexane, and kerosene.
Current edition approved Sept. 1, 2013. Published September 2013. Originally
Mineral oil is essentially harmless and not readily flammable,
approved in 2007. Last previous edition approved in 2007 as D7385 – 07. DOI:
so its use does not require warnings for personnel untrained in
10.1520/D7385-13.
2
handling laboratory chemicals, but it has the disadvantage of
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
3
the ASTM website. H.W. Stone and R.O. Clinton, Ind. Eng. Chem., Anal. Ed., 14, 131 (1942)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7385 − 13
highviscosity,whichmayinhibitrapidmixingwiththecarbon. carbon is delivered into an appropriately sized graduated
...

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: D7385 − 07 D7385 − 13
Standard Guide for
Estimating Carbon Saturation by Temperature Rise upon
1
Immersion
This standard is issued under the fixed designation D7385; 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 guide covers the measurement of the temperature rise resulting from the heat of immersion when a known mass of a
specified organic liquid is added to a sample of activated carbon. If the carbon has been in use as an adsorbent and may therefore
be partially or fully exhausted, its degree of saturation may be estimated by comparing its temperature rise with that of an unused
sample of the same activated carbon.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D2652 Terminology Relating to Activated Carbon
D2854 Test Method for Apparent Density of Activated Carbon
D2867 Test Methods for Moisture in Activated Carbon
E300 Practice for Sampling Industrial Chemicals
3. Terminology
3.1 Terms related to this guide are defined in Terminology D2652.
4. Summary of Guide
4.1 A measured volume of activated carbon is added to a known volume of a selected organic liquid in a container provided
with means to measure the liquid temperature. The apparatus is sealed after the addition of the carbon and the maximum rise in
temperature is recorded. The degree of saturation of a used carbon is estimated by comparing its temperature rise with that of the
original unused activated carbon of equivalent moisture content, measured under the same conditions. If no such reference sample
is available, a commercial unused activated carbon of the same physical type from a reputable manufacturer may be substituted;
such substitution should be noted in the report.
5. Significance and Use
5.1 It is often useful to estimate the degree of saturation, and hence the expected remaining service life, of activated carbon
that has been in use for some time. This guide is applicable when such information must be obtained fairly rapidly under field
3
conditions without access to optimal analytical instruments.
6. Apparatus and Materials
6.1 Apparatus—The apparatus should consist of a container such as a small bottle or flask to accommodate the carbon, the
organic liquid, and a thermometer or thermocouple with a range to allow for a temperature rise of up to about 30 ºC, graduated
1
This guide is under the jurisdiction of ASTM Committee D28 on Activated Carbonand is the direct responsibility of Subcommittee D28.04 on Gas Phase Evaluation
Tests.
Current edition approved Oct. 1, 2007Sept. 1, 2013. Published November 2007September 2013. Originally approved in 2007. Last previous edition approved in 2007 as
D7385 – 07. DOI: 10.1520/D7385-07.10.1520/D7385-13.
2
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.
3
H.W. Stone and R.O. Clinton, Ind. Eng. Chem., Anal. Ed., 14, 131 (1942)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7385 − 13
in intervals of 0.5 ºC, with facility to interpolate to 60.1 ºC. A liquid-in-glass thermometer should not use mercury, because of the
greater risk of breakage under field conditions. The container should be provided with a rubber stopper or other suitable closure
to seal the contents after the carbon has been added to the organic liquid. Appropriate containers include an Erlenmeyer or Florence
flask of about 125 to 250 mL capacity or a similar-sized narrow-necked bottle.
6.2 Materials—Many organic liquids that are insoluble in water but readily soluble in other adsorbates that may already be on
the carbon are potentially useful. Those that have been tried include mineral oil, hexane, cycl
...