ASTM D5042-90(2009)
(Test Method)Standard Test Method for Estimating the Organic Fouling of Particulate Anion Exchange Resins (Withdrawn 2018)
Standard Test Method for Estimating the Organic Fouling of Particulate Anion Exchange Resins (Withdrawn 2018)
SIGNIFICANCE AND USE
One of the major factors in the unsatisfactory performance of anion exchange resins is their fouling by organic material. Knowledge of the degree of fouling can be used to assess the condition of the resin and may indicate the need for pretreatment of the influent, remedial cleaning procedures, or resin replacement.
It is recognized that this test method may not remove and detect cation sloughage products or declumping agents. It is not intended to remove all organic compounds from the resin.
Since the chemical structures of organics compounds fouling the resin are generally unknown and are expressed only on the basis of their carbon content, interpretation of test results to form a basis for predictions for resin performance or cleaning procedures should be approached with caution.
Samples may be taken before or after plant regeneration, or both, depending on the type of information desired. This decision is left to the judgment of the user.
SCOPE
1.1 This test method provides a general estimate of the organic fouling of an anion exchange resin based upon total organic carbon measurements.
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. For a specific hazard statement, see 8.3.
WITHDRAWN RATIONALE
This test method provides a general estimate of the organic fouling of an anion exchange resin based upon total organic carbon measurements.
Formerly under the jurisdiction of Committee D19 on Water, this test method was withdrawn in July 2018 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5042 − 90 (Reapproved 2009)
Standard Test Method for
Estimating the Organic Fouling of Particulate Anion
Exchange Resins
This standard is issued under the fixed designation D5042; 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 3.2 Definitions of Terms Specific to This Standard:
3.2.1 organic fouling—buildup of organic material in or on
1.1 This test method provides a general estimate of the
anion exchange resins by sorption during the service cycle and
organic fouling of an anion exchange resin based upon total
incomplete removal during regeneration.
organic carbon measurements.
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 A sample of particulate anion exchange material is
standard.
contacted with a sodium chloride/sodium hydroxide solution at
1.3 This standard does not purport to address all of the
an elevated temperature. After a specified contact time, the
safety concerns, if any, associated with its use. It is the
concentration of organic material in the aqueous phase is
responsibility of the user of this standard to establish appro-
measured as total organic carbon (TOC).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For a specific
5. Significance and Use
hazard statement, see 8.3.
5.1 One of the major factors in the unsatisfactory perfor-
mance of anion exchange resins is their fouling by organic
2. Referenced Documents
material. Knowledge of the degree of fouling can be used to
2.1 ASTM Standards:
assess the condition of the resin and may indicate the need for
D1129 Terminology Relating to Water
pretreatment of the influent, remedial cleaning procedures, or
D1193 Specification for Reagent Water
resin replacement.
D2187 Test Methods for Physical and Chemical Properties
5.2 It is recognized that this test method may not remove
of Particulate Ion-Exchange Resins
and detect cation sloughage products or declumping agents. It
D2579 Test Method for Total Organic Carbon in Water
is not intended to remove all organic compounds from the
(Withdrawn 2002)
resin.
D2687 PracticesforSamplingParticulateIon-ExchangeMa-
terials
5.3 Since the chemical structures of organics compounds
D4839 Test Method forTotal Carbon and Organic Carbon in
foulingtheresinaregenerallyunknownandareexpressedonly
WaterbyUltraviolet,orPersulfateOxidation,orBoth,and
on the basis of their carbon content, interpretation of test
Infrared Detection
results to form a basis for predictions for resin performance or
cleaning procedures should be approached with caution.
3. Terminology
5.4 Samplesmaybetakenbeforeorafterplantregeneration,
3.1 Definitions—For definitions of terms used in this test
or both, depending on the type of information desired. This
method, refer to Terminology D1129.
decision is left to the judgment of the user.
6. Interferences
This test method is under the jurisdiction of ASTM Committee D19 on Water
and is the direct responsibility of Subcommittee D19.08 on Membranes and Ion
6.1 The high sodium chloride (NaCl) concentration of the
Exchange Materials.
test solutions may interfere with the response of the total
Current edition approved May 1, 2009. Published June 2009. Originally
ε1
approved in 1990. Last previous edition approved in 2004 as D5042 – 90 (2004) .
organiccarbonanalyzer.Theresponseoftheinstrumentshould
DOI: 10.1520/D5042-90R09.
be determined using standards prepared in this matrix.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM 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. Fisher, S., and Otten, G., “Standardization of Methodology for Estimating the
The last approved version of this historical standard is referenced on Organic Fouling of Ion Exchange Resins,” Proceedings of the International Water
www.astm.org. Conference, October 1989.
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D5042 − 90 (Reapproved 2009)
7. Apparatus sodium hydroxide solution (see 8.3) to each. Cover the flask
with a small inverted beaker. Place flasks in a water bath at 90
7.1 Instrument to determine total organic carbon are as
6 2°C for 1 h.
specified in Test Methods D2579, Oxidation—Infrared Detec-
tion test method, or D4839. TOC instruments using conduc- 10.3 After1hof heating, remove the flasks from the water
tivity detection have also been found to be suitable. The bath.Add 50 mLof water and cool to room temperature. Filter
instrument must be capable of measuring CO formed without the supernatant solution through a sintered glass funnel and
NaCl interference. neutralizetopH3to5bythe
...
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