NDLI: Improving the integrated hybrid LCA in the upstream scope 3 emissions inventory analysis

Content Provider	Springer Nature Link
Author	Lee, Chia Ho Ma, Hwong Wen
Copyright Year	2012
Abstract	The protocols of carbon footprints generally define three scopes for different greenhouse gas (GHG) emissions levels. The most important carbon footprint emissions source comes from upstream indirect emissions of scope 3 for products that do not consume energy during their use phase. Upstream scope 3 GHG inventory can usually be analyzed through input–output or hybrid LCA analysis. The economic input–output life cycle analysis (EIO-LCA) and the hybrid LCA model have been widely used for this purpose. However, a cutoff error exists in the hybrid model, and the lack of a truncation criterion between process and IO inventory may lead to a high level of uncertainty in the hybrid model. This study attempts to improve the problem of cutoff uncertainty in hybrid LCA and proposes a method to minimize the cutoff uncertainty.The way to improve the cutoff uncertainty could follow two steps. First, through the IO inventory analysis of EIO-LCA, we can define the emissions by various tiers of product components. The IO inventory indicator can provide a definitive criterion for the process inventory of the hybrid model. Second, we connect the process- and IO-LCI according to the IO inventory result. The advantage of the process inventory is that it provides detailed manufacturing information on the target while the IO encompasses a complete system boundary. For improvements, the process inventory can catch the most important process of the GHG emissions, and the IO inventory could compensate for the remainder of the incomplete system inventory.In this case study, the printed circuit board production process is used to evaluate the efficiency of the improved method. The threshold M was set to 70 in this case study, and the IO inventory provides the remaining 30 %. For the integrated hybrid model, the tier 3 process inventory takes only 64 % while the incorporation of the proposed method can include 92 % of the total emissions, which shows the cutoff uncertainty can be reduced through the improvement.This study provides a clear guideline for process and IO cutoff criteria, which can help the truncation uncertainty. When higher precision is required, process LCI will need to play an important role, and thus, a higher M value should be set. In this situation, the emissions from IO-LCI would be smaller than the emissions from the process LCI. The appropriate solution would attain a comfortable balance between data accuracy and time and labor consumption.
Starting Page	17
Ending Page	23
Page Count	7
File Format	PDF
ISSN	09483349
Journal	The International Journal of Life Cycle Assessment
Volume Number	18
Issue Number	1
e-ISSN	16147502
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-07-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon footprint EIO-LCA Integrated hybrid LCA LCA uncertainty Print circuit board Scope 3 Environment Environmental Economics Environmental Engineering/Biotechnology Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A hybrid life cycle assessment of water treatment chemicals: an Australian experience

Rolling resistance contribution to a road pavement life cycle carbon footprint analysis

A new hybrid method for reducing the gap between WTW and LCA in the carbon footprint assessment of electric vehicles

Greenhouse gas emissions from forestry in East Norway

Ecoinvent 3: assessing water use in LCA and facilitating water footprinting

Improving odour assessment in LCA—the odour footprint

Status update on LCA studies and networking in Tanzania

Soil organic matter accounting in the carbon footprint analysis of the wine chain

Design of a sustainable packaging in the food sector by applying LCA

Improving the integrated hybrid LCA in the upstream scope 3 emissions inventory analysis

Similar Documents

A hybrid life cycle assessment of water treatment chemicals: an Australian experience

Rolling resistance contribution to a road pavement life cycle carbon footprint analysis

A new hybrid method for reducing the gap between WTW and LCA in the carbon footprint assessment of electric vehicles

Greenhouse gas emissions from forestry in East Norway

Ecoinvent 3: assessing water use in LCA and facilitating water footprinting

Improving odour assessment in LCA—the odour footprint

Status update on LCA studies and networking in Tanzania

Soil organic matter accounting in the carbon footprint analysis of the wine chain

Design of a sustainable packaging in the food sector by applying LCA

Improving the integrated hybrid LCA in the upstream scope 3 emissions inventory analysis