Analyzing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy

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Analyzing Temporal Variability in Inventory Data for Life Cycle Assessment : Implications in the Context of Circular Economy

Shoaib-ul-Hasan, Sayyed, Dr. 1986- (author): KTH,Tillverkning och mätsystem

Roci, Malvina (author): KTH,Tillverkning och mätsystem

Asif, Farazee M. A. (author): KTH,Tillverkning och mätsystem

Salehi, Niloufar (author): KTH,Tillverkning och mätsystem

Rashid, Amir, 1967- (author): KTH,Tillverkning och mätsystem

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(creator_code:org_t)

2021-01-02
2021
English.
In: Sustainability. - : MDPI. - 2071-1050. ; 13:1

Related links:: https://doi.org/10.3...; show more...; https://www.mdpi.com...; https://urn.kb.se/re...; https://doi.org/10.3...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Life cycle assessment (LCA) is used frequently as a decision support tool for evaluating different design choices for products based on their environmental impacts. A life cycle usually comprises several phases of varying timespans. The amount of emissions generated from different life cycle phases of a product could be significantly different from one another. In conventional LCA, the emissions generated from the life cycle phases of a product are aggregated at the inventory analysis stage, which is then used as an input for life cycle impact assessment. However, when the emissions are aggregated, the temporal variability of inventory data is ignored, which may result in inaccurate environmental impact assessment. Besides, the conventional LCA does not consider the environmental impact of circular products with multiple use cycles. It poses difficulties in identifying the hotspots of emission-intensive activities with the potential to mislead conclusions and implications for both practice and policy. To address this issue and to analyze the embedded temporal variations in inventory data in a CE context, the paper proposes calculating the emission intensity for each life cycle phase. It is argued that calculating and comparing emission intensity, based on the timespan and amount of emissions for individual life cycle phases, at the inventory analysis stage of LCA offers a complementary approach to the traditional aggregate emission-based LCA approach. In a circular scenario, it helps to identify significant issues during different life cycle phases and the relevant environmental performance improvement opportunities through product, business model, and supply chain design.

Subject headings

TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)

Keyword

life cycle assessment
circular economy
multiple product life cycles
temporal variability
life cycle inventory
emission intensity

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ref (subject category)
art (subject category)

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