ASTM E790-15

Standard Test Method for Residual Moisture in Refuse-Derived Fuel Analysis Samples

SIGNIFICANCE AND USE
5.1 The procedure in this test method for a sample as specified herein is intended for the purpose of determining the residual moisture present in a RDF analysis sample.  
5.2 The residual moisture value is used to correct as-determined analysis results such as gross heating value, sulfur, and ash to dry sample basis results.
SCOPE
1.1 This test method covers the measurement of residual moisture in refuse-derived fuel (RDF) analysis samples. It is used to calculate on a dry basis other determinations performed on analysis RDF samples. It is used with air-dry moisture results to calculate total moisture (Note 1). The total moisture is used to calculate as-received values or other analyses performed on a sample.  
Note 1: In some instances RDF moisture may change during size-reduction steps of the RDF analysis sample preparation procedure. This moisture change, unless suitable corrections are made, will affect the accuracy of the total moisture value as calculated from the air-dry and residual moisture results.  
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 more specific precautionary information see Section 7.

General Information

• Status: Historical
• Publication Date: 31-Aug-2015
• ICS: 75.160.10 - Solid fuels
• Technical Committee: D34 - Waste Management
• Drafting Committee: D34.03 - Treatment, Recovery and Reuse

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E790 − 15
Standard Test Method for
Residual Moisture in Refuse-Derived Fuel Analysis
1
Samples
This standard is issued under the fixed designation E790; 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 measurement of residual 3.1 For definitions of terms used in this test method, refer to
moisture in refuse-derived fuel (RDF) analysis samples. It is Terminology D5681.
usedtocalculateonadrybasisotherdeterminationsperformed
4. Summary of Test Method
on analysis RDF samples. It is used with air-dry moisture
results to calculate total moisture (Note 1). The total moisture
4.1 This test method is based on the weight loss of an
is used to calculate as-received values or other analyses
air-dried analysis RDF sample under rigidly controlled condi-
performed on a sample.
tions of temperature, time, and air flow.
NOTE 1—In some instances RDF moisture may change during size-
4.2 The total moisture is calculated from the loss or gain
reduction steps of the RDF analysis sample preparation procedure. This
uponsampleairdryingandtheresidualmoistureasdetermined
moisture change, unless suitable corrections are made, will affect the
by this test method.
accuracy of the total moisture value as calculated from the air-dry and
residual moisture results.
5. Significance and Use
1.2 The values stated in SI units are to be regarded as
5.1 The procedure in this test method for a sample as
standard. No other units of measurement are included in this
specified herein is intended for the purpose of determining the
standard.
residual moisture present in a RDF analysis sample.
1.3 This standard does not purport to address all of the
5.2 The residual moisture value is used to correct as-
safety concerns, if any, associated with its use. It is the
determined analysis results such as gross heating value, sulfur,
responsibility of the user of this standard to establish appro-
and ash to dry sample basis results.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For more specific
6. Apparatus
precautionary information see Section 7.
6.1 Drying Oven:
2. Referenced Documents
6.1.1 RefereeType—The oven shall be constructed to have a
2
uniform temperature within the specimen chamber, have a
2.1 ASTM Standards:
minimum excess air volume, and be capable of constant
D3173 Test Method for Moisture in the Analysis Sample of
temperature regulation at 107 6 3°C. Provision shall be made
Coal and Coke
for renewing the preheated air in the oven at the rate of two to
D5681 Terminology for Waste and Waste Management
four times the oven air volume a minute, with the intake air
E180 Practice for Determining the Precision of ASTM
dried by passing through a desiccant. An oven similar to the
Methods for Analysis and Testing of Industrial and Spe-
3
one illustrated in Fig. 1 of Test Method D3173 is suitable.
cialty Chemicals (Withdrawn 2009)
6.1.2 Routine Type—Adrying oven of either the mechanical
ornaturalcirculationtypewhichiscapableofconstantuniform
1
This test method is under the jurisdiction of ASTM Committee D34 on Waste
temperature within the specimen chamber regulated at 107 6
Management and is the direct responsibility of Subcommittee D34.03 on Treatment,
3°C.
Recovery and Reuse.
Current edition approved Sept. 1, 2015. Published September 2015. Originally
NOTE 2—Either type of oven may be used for routine determinations.
approved in 1981. Last previous edition approved in 2008 as E790 – 08. DOI:
However, the referee-type oven shall be used to resolve differences
10.1520/E0790-15.
between determinations.
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
6.2 Containers—Sample ash determinations are made using
Standards volume information, refer to the standard’s Document Summary page on
a porcelain capsule 22 mm in depth and 44 mm in diameter or
the ASTM website.
3
a fused silica capsule of similar shape. A well-fitting flat
The last approved version of this historical standard is referenced on
www.astm.org. aluminum cover is used when ashing samples. Platinum
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
1

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E790 − 15
crucibles or glass capsules with ground-glass caps may also be 9. Procedure
used. They should be as shallow as possible while remaining
9.1 Heat the empty containers and covers under the same
conv
...

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: E790 − 08 E790 − 15
Standard Test Method for
Residual Moisture in a Refuse-Derived Fuel Analysis
1
SampleSamples
This standard is issued under the fixed designation E790; 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 measurement of the residual moisture in an analysis sample of RDF.refuse-derived fuel (RDF)
analysis samples. It is used to calculate to theon a dry basis other determinations performed on the analysis sample. RDF samples.
It is used with the air-dry moisture results to calculate total moisture (Note 1). The total moisture is used to calculate as-received
values or other analyses performed on thea sample.
NOTE 1—In some instances RDF moisture may change during the size-reduction steps of the RDF analysis sample preparation procedure. This moisture
change, unless suitable corrections are made, will affect the accuracy of the total moisture value as calculated from the air-dry and residual moisture
results.
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 more specific precautionary information see Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
D3173 Test Method for Moisture in the Analysis Sample of Coal and Coke
D5681 Terminology for Waste and Waste Management
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
3
(Withdrawn 2009)
3. Terminology
3.1 For definitions of terms used in this test method, refer to Terminology D5681.
4. Summary of Test Method
4.1 This test method is based on the weight loss in weight of an air-dried analysis RDF sample of RDF under rigidly controlled
conditions of temperature, time, and air flow.
4.2 The total moisture is calculated from the loss or gain in upon sample air drying and the residual moisture as determined by
this test method.
5. Significance and Use
5.1 The treatment of the procedure in this test method for a sample as specified herein is intended for the purpose of determining
the residual moisture present in an analysis sample of RDF.a RDF analysis sample.
5.2 The residual moisture value is used to convertcorrect as-determined analyses analysis results such as gross heating value,
sulfur, and ash to a dry sample basis.basis results.
1
This test method is under the jurisdiction of ASTM Committee D34 on Waste Management and is the direct responsibility of Subcommittee D34.03 on Treatment,
Recovery and Reuse.
Current edition approved Sept. 1, 2008Sept. 1, 2015. Published October 2008September 2015. Originally approved in 1981. Last previous edition approved in 20042008
as E790 – 87E790 – 08.(2004). DOI: 10.1520/E0790-08.10.1520/E0790-15.
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
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E790 − 15
6. Apparatus
6.1 Drying Oven:
6.1.1 Referee Type—The oven shall be so constructed as to have a uniform temperature within the specimen chamber, have a
minimum excess air volume, and be capable of constant temperature regulation at 107 6 3°C. Provision shall be made for
renewing the preheated air in the oven at the rate of two to four times the oven air volume a minute, with the intake air dried by
passing it through a desiccant. An oven similar to the one illustrated in Fig. 1 of Test Method D3173 is suitable.
6.1.2 Routine Type—A drying oven of either the mechanical or natural circulation type which is capable of constant uniform
temperature within the specimen chamber regulated at 107 6 3°C.
NOTE 2—Either type of oven may be used for routi
...