1.1 This guide provides a framework to enable Life Cycle Assessment (LCA) practitioners to make informed decisions regarding how to allocate environmental impacts attributable to recycling in environmental LCA. It helps practitioners characterize and define materials recycling across industries; informs on available methodologies to include recycling into LCA; aids in assessment of the overall life cycle of systems and understanding of materials; and supports life cycle management and overall stewardship of materials. 1.2 The guide is not intended to contradict or circumvent the provisions of 14025, ISO 14040, ISO 14044, ISO 14067, ISO 14049, or ISO 21930. When conflicts arise, the requirements of those ISO standards take precedence. LCA practitioners are expected to ensure consistency and conformance with the relevant provisions of ISO standards. 1.3 The following seven material-specific appendices are included: TitleAppendix Recycling of BiodieselX1 Recycling of Copper X2X1 Recycling of Flue Gas Desulfurization (FGD) GypsumX3X2 Recycling of GlassX4X3 Recycling of PlasticsX5X4 Recycling of Post-consumer GypsumX6X5 Recycling of Stainless SteelX7X6 Recycling of Supplementary Cementitious MaterialsX8X7 1.4 Units The values stated in SI units are to be regarded as standard. No other units of measurement are included in this guide.
Keywordsrecycling; LCA; life cycle assessment; materials
This guide is a general sustainability standard for use across all industries and applications where LCA is used beyond the building and construction sector. It intended to be a companion to the ISO standards. For that reason, ISO terminology is used when available. No internationally recognized consensus standard setting organization has clearly defined material- or application-specific recycled modeling practices for the purpose of Life Cycle Assessment (LCA). This has led to confusion and significant variation in approaches within, and across, industries. The impact of this can lead to inconsistency in the comparative studies and EPDs, as well as general confusion as to the appropriate approach for a given industry, material type, or system category. General information about internationally recognized acceptable approaches is provided within the main document. Since there is tremendous variation between materials in terms of recycled content and end-of-life productive re-use alternatives, appendices are included, which will both educate practitioners about these differences and provide specific reliable guidance based on research. There is no limit to the potential number of appendices. The intent is for this guide to evolve into a central primary resource document for LCA practitioners. Because a large number of appendices are anticipated over time, the TG group agreed to limit their length to about 2 pages and to place them in alphabetical order for this ballot. They are to include the basic information needed by practitioners and sufficient references to supporting research to document their technical validity. Eight appendices for recycled materials are included in this ballot. Other industries have contributed to the draft but were not ready to prepare appendices at the time of this ballot. Additional appendices will be included as the main body of the text is finalized in subcommittee. This document has been significantly revised since the first ballot and every effort has been made to address the negatives and comments and recommendations made by ASTM editorial staff about format, including the addition of an appendix index. A redlined version showing all changes made since the last ballot can be made available upon request.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
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