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oai:figshare.com:article/33969004 2026-09-22T22:04:42Z category_34 portal_316 item_type_3 month_year_09_2026

Supplementary file 1_Greenhouse gas accounting of municipal solid waste (MSW) treatment integrating classification and synergistic valorization of characteristic wastes: a case study of Zhanjiang, a Coastal City in South China.docx Huixin Zhang (5843381) Yuemin Sun (11828324) Ming Zhang (9736) Doh Shu Ing (25092136) Bingliang Qu (12511540) Junxiao Wei (25092139) Zhongwen Du (25092142) Environmental Science municipal solid waste greenhouse gas emissions life‐cycle assessment, waste classification food waste black soldier fly shell valorization carbon mitigation Introduction<p>Municipal solid waste (MSW) management significantly contributes to urban greenhouse gas (GHG) emissions. Optimizing MSW classification and treatment is crucial for achieving carbon neutrality, especially in coastal cities with unique waste streams.</p>Methods<p>Using life‐cycle assessment, we quantified direct, indirect, and avoided‐product emissions for five MSW scenarios in Zhanjiang, China, including food waste (FW) anaerobic digestion (AD), black soldier fly (BSF) bioconversion, recyclable recovery, and shell‐waste valorization into bio‐CaCO₃. The functional unit was 1 tonne of MSW.</p>Results<p>Net emissions were negative for all scenarios (−512 to −682 kg CO₂_eq/t). The integrated scenario (20% FW separation, 30% recyclables, BSF treatment, and 5% shell valorization) achieved the lowest net emission (−681.54 kg CO₂‐eq/t), a 33% reduction from baseline. Shell valorization contributed 23% of the incremental benefit.</p>Discussion<p>Moderate separation rates (20–30%) offer optimal balance; exceeding thresholds yields diminishing returns. BSF is a cost‐effective alternative to AD for coastal cities. Shell waste upcycling provides a unique blue‐carbon pathway. Policy recommendations include phased implementation of BSF and full‐scale shell recovery networks.</p> 2026-09-22T22:04:42Z Dataset Dataset 10.3389/fenvs.2026.1927150.s001 https://figshare.com/articles/dataset/Supplementary_file_1_Greenhouse_gas_accounting_of_municipal_solid_waste_MSW_treatment_integrating_classification_and_synergistic_valorization_of_characteristic_wastes_a_case_study_of_Zhanjiang_a_Coastal_City_in_South_China_docx/33969004 CC BY 4.0