Utilising copper tailings as a sustainable alternative to conventional structural filling materials : LCA analysis
Choudhary, K., Gill, G., Sangwa, N. R., & Sarna, B. (2024). Utilising copper tailings as a sustainable alternative to conventional structural filling materials : LCA analysis. Built Environment Project and Asset Management, Early online. https://doi.org/10.1108/bepam-12-2023-0228
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Built Environment Project and Asset ManagementDate
2024Copyright
© Emerald Publishing Limited
Purpose – Mine tailings are solid waste left after extracting the valuable fraction of the ore. This study reviewed the possibility of using copper-tailing waste to develop building foundations and compared its environmental implications with conventional sand foundations.
Design/methodology/approach – This study first discusses the state-of-the-art use of copper tailings in various industries through a literature review. The study then uses the life cycle assessment (LCA) methodology to quantify and compare the environmental impacts generated by the conventionals and tailing foundations for buildings by considering a 1 3 1 m foundation area. The study also assessed the environmental impacts of a real copper mine case of the Khetri Copper Complex in the state of Rajasthan, India, and conducted a sensitivity analysis to show the impact of transportation distance on environmental impacts using the Monte Carlo simulation technique.
Findings – The study results indicate that the building foundation developed using copper-tailing waste is environmentally beneficial compared to a sand foundation. The sensitivity analysis results indicate that the transportation of tailings reduces the environmental benefits if transported over long distances; however, the utilisation is helpful for environmental sustainability. We further discussed the managerial and social implications of the results.
Originality/value – This study is a novel contribution highlighting the sequestration potential of copper tailing waste utilisation using midpoint and endpoint environmental impact categories.
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