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Eco-Efficiency Analysis of Integrated Waste Management Strategies Based on Gasification and Mechanical Biological Treatment

Author

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  • Abdulrahman Abdeljaber

    (Department of Civil and Environmental Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates)

  • Rawan Zannerni

    (Biomass & Bioenergy Research Group, Center for Sustainable Energy and Power Systems Research, University of Sharjah, Sharjah 27272, United Arab Emirates)

  • Wedad Masoud

    (Department of Civil and Environmental Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates)

  • Mohamed Abdallah

    (Department of Civil and Environmental Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
    Biomass & Bioenergy Research Group, Center for Sustainable Energy and Power Systems Research, University of Sharjah, Sharjah 27272, United Arab Emirates)

  • Lisandra Rocha-Meneses

    (Biomass & Bioenergy Research Group, Center for Sustainable Energy and Power Systems Research, University of Sharjah, Sharjah 27272, United Arab Emirates)

Abstract

Integrated solid waste management (ISWM) strategies are developed towards promoting sustainable approaches for handling waste. Recently, gasification and mechanical biological treatment (MBT) technologies were recognized as effective processes for treating municipal solid waste. This study investigates the feasibility of integrating gasification and MBT technologies in multiple ISWM strategies, compared to incineration- and anaerobic digestion (AD)-based strategies. A comprehensive techno-economic and environmental assessment was carried out to evaluate the performance of the examined ISWM strategies. The evaluation was based on the energy generation potential, carbon footprint, and life cycle costing (LCC). An eco-efficiency analysis was conducted to quantify the environmental costs by incorporating the carbon footprint and LCC results. The proposed strategies were applied for the city of Abu Dhabi, United Arab Emirates, based on local bylaws and guidelines. The analysis revealed that the gasification-based strategy had the highest energy production of 47.0 million MWh, followed by the incineration- (34.2 million MWh), AD- (17.2 million MWh), and MBT-based (14.9 million MWh) strategies. Results of the environmental analysis indicated that the MBT- and AD-based strategies contributed the least to global warming with greenhouse gas emissions of 4442 and 4539 GgCO 2 -eq, respectively, compared to the gasification- (9922 GgCO 2 -eq) and incineration-based (15,700 GgCO 2 -eq) strategies. Furthermore, over a 25-year assessment period, the LCC findings demonstrated that the gasification- and MBT-based strategies were the most financially feasible with a positive net present value (NPV) of USD 364 and USD 284 million, respectively. The eco-efficiency analysis indicated that the MBT and gasification strategies are the most sustainable among the examined strategies. The sustainability of the assessed systems was improved by implementing policy and legal reforms, including incentive programs, less stringent bylaws on digestate, and encouraging source separation of wastes. Overall, this research emphasized the potential environmental and financial benefits of incorporating MBT and gasification technologies into ISWM strategies.

Suggested Citation

  • Abdulrahman Abdeljaber & Rawan Zannerni & Wedad Masoud & Mohamed Abdallah & Lisandra Rocha-Meneses, 2022. "Eco-Efficiency Analysis of Integrated Waste Management Strategies Based on Gasification and Mechanical Biological Treatment," Sustainability, MDPI, vol. 14(7), pages 1-18, March.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:7:p:3899-:d:779872
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    References listed on IDEAS

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