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Quantifying Construction and Demolition Waste Generation and Assessing the Recovery and Recycling Potential to Reduce Raw Material and Energy Consumption to promote Responsible Production and Consumption through the Principles of Circular Economy: An Analysis of 12 City Corporations in Bangladesh
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1  North South University
Academic Editor: Wataru Takeuchi

Abstract:

Effective management of construction and demolition waste (CDW) is essential for promoting sustainable resource utilization and responsible waste practices. With a notable increase in construction activities across Bangladesh, there has been a surge in CDW production. However, comprehensive data on CDW generation in the country has been lacking until now. This study, conducted in the fiscal year 2022, aims to bridge this knowledge gap by providing waste generation rates (WGR) for specific C&D materials and exploring CDW recycling practices. The research focuses on construction and demolition sites within the 12 city corporations of Bangladesh. The study's results indicate that CDW in Bangladesh is predominantly composed of concrete (56%), brick (15%), mortar (9%), metal (6%), and ceramics (6%). Specific CDW WGRs are quantified using regression analysis. Notably, for Dhaka, the capital of Bangladesh, the Construction and Demolition WGR for the fiscal year 2022 is estimated at 64.68 kg/m2 and 1626.97 kg/m2, respectively. Unfortunately, a significant portion of this waste is improperly disposed of in landfills or unauthorized areas. Furthermore, this research focuses on assessing the recycling potential of concrete, brick, mortar, metal, and ceramics in major cities of Bangladesh. The aim is to reduce the strain on virgin natural resources and lower CO2 emissions by applying circular economy principles. This information serves as a valuable resource for shaping future strategies in CDW management, particularly in economically constrained regions like Bangladesh, while contributing to the achievement of Sustainable Development Goal 12 (SDG12).

Keywords: Circular Economy; Construction; Demolition; Landfill; Recycling; Waste
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