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Niloufar Salehi
Department of Production Engineering, KTH Royal Institute of Technology, Brinellvägen 68, 100 44 Stockholm, Sweden

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Journal article
Published: 02 January 2021 in Sustainability
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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.

ACS Style

Sayyed Shoaib-Ul-Hasan; Malvina Roci; Farazee Asif; Niloufar Salehi; Amir Rashid. Analyzing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy. Sustainability 2021, 13, 344 .

AMA Style

Sayyed Shoaib-Ul-Hasan, Malvina Roci, Farazee Asif, Niloufar Salehi, Amir Rashid. Analyzing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy. Sustainability. 2021; 13 (1):344.

Chicago/Turabian Style

Sayyed Shoaib-Ul-Hasan; Malvina Roci; Farazee Asif; Niloufar Salehi; Amir Rashid. 2021. "Analyzing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy." Sustainability 13, no. 1: 344.

Preprint
Published: 16 November 2020
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Life cycle assessment (LCA) is used frequently as a decision support tool for evaluating different design choices of products based on their environmental impacts. A life cycle usually comprises several phases of varying timespan. 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 analyse the embedded temporal variations in inventory data in a CE context, the paper proposes to calculate 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.

ACS Style

Sayyed Shoaib-Ul-Hasan; Malvina Roci; Farazee Mohammad Abdullah Asif; Niloufar Salehi; Amir Rashid. Analysing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy. 2020, 1 .

AMA Style

Sayyed Shoaib-Ul-Hasan, Malvina Roci, Farazee Mohammad Abdullah Asif, Niloufar Salehi, Amir Rashid. Analysing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy. . 2020; ():1.

Chicago/Turabian Style

Sayyed Shoaib-Ul-Hasan; Malvina Roci; Farazee Mohammad Abdullah Asif; Niloufar Salehi; Amir Rashid. 2020. "Analysing Temporal Variability in Inventory Data for Life Cycle Assessment: Implications in the Context of Circular Economy." , no. : 1.