Standard Guide for Alternative Allocation Approaches to Modeling Input and Output Flows of Secondary Materials and Related Recycling Scenarios in Life Cycle Assessment

SIGNIFICANCE AND USE
4.1 LCAs can help to identify some of the potential environmental impacts of products or services throughout the entire life cycle. In a life cycle inventory analysis, emissions into the air; discharges into the water and soil; and product, material, and energy flows at all stages of a product’s life cycle are compiled and quantified. The resulting life cycle impact assessment (LCIA) converts the quantified parameters into environmental impact categories.  
4.2 Options for managing products at their end of life (EOL) can include, but are not limited to, re-using, recycling, recovering, remanufacturing, converting to energy, incinerating, composting, combustion, digestion/respiration, or discarding as waste. Materials enter subsequent life cycle(s), either in the same or in other applications, reducing the input of primary raw material and impacting the amount of waste. LCA will be required to determine if environmental impact reductions are expected to be realized and to what extent for each specific application. The end-of-life management can impact the overall life cycle assessment.  
4.3 The application of an allocation method for recycling in life cycle assessments is useful in assessing potential environmental impacts, which may be either beneficial or adverse.  
4.4 As part of good LCA practice, practitioners should consider recycling in the sensitivity analysis.  
4.5 LCA practitioners are expected to ensure consistency and conformance with the relevant provisions of ISO standards.  
4.6 Allocation for recycling can split the flows and impacts between two different product systems.
SCOPE
1.1 This guide illustrates alternative allocation approaches that provide options for modeling secondary material flows and related recycling scenarios within a life cycle assessment (LCA) study. It helps practitioners characterize and understand materials recycling across industries; provides the available methodologies for consideration of the environmental impacts that are attributed to material and product flows in LCA; aids in assessment of the overall life cycle of systems and understanding of materials; and supports life cycle management.  
1.2 The guide is not intended to contradict or circumvent the LCA provisions of ISO 14025, ISO 14040, ISO 14044, ISO 14067, ISO/TR 14049, or ISO 21930. When conflicts arise related to LCA, the guidance of those ISO standards takes precedence.  
1.3 The following seven material-specific appendixes are included:    
Title  
Appendix  
Recycling of Copper  
Appendix X1  
Recycling of Flue Gas Desulfurization (FGD) Gypsum  
Appendix X2  
Recycling of Glass  
Appendix X3  
Recycling of Plastics  
Appendix X4  
Recycling of Post-consumer (PC) Gypsum  
Appendix X5  
Recycling of Stainless Steel  
Appendix X6  
Recycling of Supplementary Cementitious Materials  
Appendix X7  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.5 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.  
1.6 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
30-Apr-2022
Current Stage
Ref Project

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ASTM E3199-22 - Standard Guide for Alternative Allocation Approaches to Modeling Input and Output Flows of Secondary Materials and Related Recycling Scenarios in Life Cycle Assessment
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E3199 − 22
Standard Guide for
Alternative Allocation Approaches to Modeling Input and
Output Flows of Secondary Materials and Related Recycling
1
Scenarios in Life Cycle Assessment
This standard is issued under the fixed designation E3199; 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 Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.1 This guide illustrates alternative allocation approaches
Barriers to Trade (TBT) Committee.
thatprovideoptionsformodelingsecondarymaterialflowsand
related recycling scenarios within a life cycle assessment
2. Referenced Documents
(LCA) study. It helps practitioners characterize and understand
2
2.1 ASTM Standards:
materials recycling across industries; provides the available
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
methodologies for consideration of the environmental impacts
Alloys, and Ferroalloys
that are attributed to material and product flows in LCA; aids
E2114 Terminology for Sustainability Relative to the Perfor-
in assessment of the overall life cycle of systems and under-
mance of Buildings
standing of materials; and supports life cycle management.
3
2.2 ISO Standards:
1.2 Theguideisnotintendedtocontradictorcircumventthe
ISO14001 Environmentalmanagementsystems—Require-
LCA provisions of ISO 14025, ISO 14040, ISO 14044, ISO
ments with guidance for use
14067, ISO/TR 14049, or ISO 21930. When conflicts arise
ISO 14025 Environmental labels and declarations — Type
related to LCA, the guidance of those ISO standards takes
III environmental declarations — Principles and proce-
precedence.
dures
1.3 The following seven material-specific appendixes are
ISO 14040 Environmental management — Life cycle as-
included: sessment — Principles and framework
ISO 14044 Environmental management — Life cycle as-
Title Appendix
Recycling of Copper Appendix X1
sessment — Requirements and guidelines
Recycling of Flue Gas Desulfurization (FGD) Gypsum Appendix X2
ISO/TR 14049 Environmental management — Life cycle
Recycling of Glass Appendix X3
assessment — Illustrative examples on how to apply ISO
Recycling of Plastics Appendix X4
Recycling of Post-consumer (PC) Gypsum Appendix X5
14044 to goal and scope definition and inventory analysis
Recycling of Stainless Steel Appendix X6
ISO 14067 Greenhouse gases — Carbon footprint of prod-
Recycling of Supplementary Cementitious Materials Appendix X7
ucts — Requirements and guidelines for quantification
1.4 The values stated in SI units are to be regarded as
ISO 15270 Plastics — Guidelines for the recovery and
standard. The values given in parentheses after SI units are
recycling of plastics waste
provided for information only and are not considered standard.
ISO 21930 Sustainability in buildings and civil engineering
1.5 This standard does not purport to address all of the
works — Core rules for environmental product declara-
safety concerns, if any, associated with its use. It is the
tions of construction products and services
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3.1 Definitions—Fordefinitionsofgeneraltermsusedinthis
1.6 This international standard was developed in accor-
guide, refer to Terminology E2114. For general terminology
dance with internationally recognized principles on standard-
related to life cycle assessment, refer to ISO 14040.
ization established in the Decision on Principles for the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This guide is under the jurisdiction ofASTM Committee E60 on Sustainability contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and is the direct responsibility of Subcommittee E60.80 on General Sustainability Standards volume information, refer to the standard’s Document Summary page on
Standards. the ASTM website.
3
Current edition approved May 1, 2022. Published June 2022. DOI: 10.1520/ Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
E3199-22. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E3199 − 22
3.1.1 post-consumer, n—descriptive term covering material, 5. Summary of Guide (LCA)
generated by the end-users of products, that has fulfilled its
5.1 While existing guidelines and
...

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