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Reducing the Environmental Impact of Denim: A Comparative Study of Green and Conventional Manufacturing Practices
Summary
Researchers conducted a life cycle assessment comparing sustainable and conventional denim manufacturing practices in Bangladesh, evaluating indicators including GHG emissions, water use, and terrestrial acidification. Yarn and fabric production accounted for 56% of GHG emissions and 45% of terrestrial acidification, identifying early production stages as the priority targets for environmental improvement in denim manufacturing.
Denim manufacturing, from cotton farming to garment production, carries significant environmental impacts. Despite introducing sustainability within the denim industry, the environmental benefits of related practices are not thoroughly assessed and contrasted with conventional manufacturing practices. This study aims to evaluate and compare the environmental impacts of sustainable and traditional denim manufacturing processes in Bangladesh through a Life Cycle Assessment. Adhering to ISO 14040/14044:2006 standards and utilising the ReCiPe 2016 Midpoint (H) assessment, this study investigated key environmental indicators, including terrestrial acidification, eutrophication, land occupation, water consumption, abiotic depletion, and greenhouse gas emissions. Notable findings reveal that yarn and fabric production contribute to 56% of greenhouse gas emissions and 45% of terrestrial acidification, while cotton cultivation accounts for 92% of water consumption and 69% of land use. Compared to traditional methods, green manufacturing practices achieve reductions in greenhouse gas emissions and water use by over 60% and 21%, respectively. These findings underscore the potential for sustainable practices to mitigate the environmental footprint of denim production while highlighting areas for further improvement. This study delivers critical insights for advancing sustainability in the denim industry.
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