A Carbon Footprint of Textile Recycling: A Case Study in Sweden

12 Pages Posted: 22 Sep 2015

See all articles by Bahareh Zamani

Bahareh Zamani

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering

Magdalena Svanström

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering

Gregory Peters

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering

Tomas Rydberg

IVL Swedish Environmental Research Institute

Date Written: August 2015

Abstract

Global population growth and rising living standards are increasing apparel consumption. Consequently, consumption of resources and generation of textile waste are increasing. According to the Swedish Environmental Protection Agency, textile consumption increased by 40% between the years 2000 and 2009 in Sweden. Given that there is currently no textile recycling plant in Sweden, the aim of this article is to explore the potential environmental benefits of various textile recycling techniques and thereby direct textile waste management strategies toward more sustainable options. Three different recycling techniques for a model waste consisting of 50% cotton and 50% polyester were identified and a life cycle assessment (LCA) was made to assess the environmental performance of them. The recycling processes are: material reuse of textile waste of adequate quality; separation of cellulose from polyester using N‐methylmorpholine‐N‐oxide as a solvent; and chemical recycling of polyester. These are compared to incineration, representing conventional textile waste treatment in Sweden. The results show that incineration has the highest global warming potential and primary energy usage. The material reuse process exhibits the best performance of the studied systems, with savings of 8 tonnes of carbon dioxide equivalents (CO‐eq) and 164 gigajoules (GJ) of primary energy per tonne of textile waste. Sensitivity analyses showed that results are particularly sensitive to the considered yields of the processes and to the choice of replaced products. An integration of these recycling technologies for optimal usage of their different features for treatment of 1 tonne of textile waste shows that 10 tonnes CO‐eq and 169 GJ of primary energy could be saved.

Keywords: carbon footprint, environmental assessment, global warming potential (GWP), industrial ecology, life cycle assessment (LCA), textile recycling

Suggested Citation

Zamani, Bahareh and Svanström, Magdalena and Peters, Gregory and Rydberg, Tomas, A Carbon Footprint of Textile Recycling: A Case Study in Sweden (August 2015). Journal of Industrial Ecology, Vol. 19, Issue 4, pp. 676-687, 2015. Available at SSRN: https://ssrn.com/abstract=2663732 or http://dx.doi.org/10.1111/jiec.12208

Bahareh Zamani (Contact Author)

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering ( email )

Kemigarden 4
Gothenburg, SE-412 96
Sweden

Magdalena Svanström

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering

Kemigarden 4
Gothenburg, SE-412 96
Sweden

Gregory Peters

Chalmers University of Technology - Chemical Environmental Science, Chemical and Biological Engineering

Kemigarden 4
Gothenburg, SE-412 96
Sweden

Tomas Rydberg

IVL Swedish Environmental Research Institute

Valhallavägen 81
Stockholm, 114 27
Sweden

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