Effective solid waste disposal necessitates suitable combination and clean conversion technologies to maximize resource utilization. Thus, this study investigates the behavior of co-pyrolysis in municipal solid waste (MSW) and food waste (FW) via thermogravimetric analysis, aiming to discern synergistic effects and optimize waste to energy conversion. The impacts of heating rate and blending ratios were evaluated under an inert N2 atmosphere, within a temperature range of 30–900℃, during single and combined pyrolysis processes respectively. Results revealed slight variations in weight loss patterns and thermal decomposition behavior. When heating rate increased from 10 to 30℃.min−1, decomposition process delayed, resulting in higher initial (Ti), peak (TP), and final (Tf) temperatures due to inadequate heat transfer. As food waste increased, mass loss rose and favorable synergistic effect was observed at 20 % FW during medium temperatures, while other blends showed inhibitory effects. The pyrolytic index (D) rose nonlinearly from 6.29 × 10−7 to 7.72 × 10−7 with a higher FW proportion, peaking at 20 % FW, suggesting an optimal MSW and FW mixing ratio. This blend also exhibited the lowest activation energy, indicating a more efficient thermal decomposition process. Those outcomes offer crucial insights for optimizing co-pyrolysis systems and provide essential information for co-disposal of MSW and FW, potentially reducing pollutant emissions and enhancing waste to energy conversion.

中文翻译：

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城市固体废物和食物残渣的共热解行为：热重研究以识别协同效应


有效的固体废物处理需要适当的组合和清洁转化技术，以最大限度地提高资源利用率。因此，本研究通过热重分析研究了城市固体废物（MSW）和食品废物（FW）的共热解行为，旨在识别协同效应并优化废物到能源的转化。在惰性 N2 气氛下，在 30-900℃ 的温度范围内，分别在单一热解过程和组合热解过程中评估加热速率和混合比例的影响。结果显示重量损失模式和热分解行为略有变化。当加热速率从10℃.min−1增加到30℃.min−1时，分解过程延迟，由于传热不充分，导致初始（Ti）、峰值（TP）和最终（Tf）温度升高。随着食物浪费的增加，质量损失增加，并且在中等温度下，在 20% FW 下观察到良好的协同效应，而其他混合物则表现出抑制作用。随着 FW 比例较高，热解指数 (D) 从 6.29 × 10−7 非线性上升至 7.72 × 10−7，在 20% FW 时达到峰值，表明 MSW 和 FW 的混合比例最佳。该混合物还表现出最低的活化能，表明热分解过程更有效。这些结果为优化共热解系统提供了重要的见解，并为共同处置城市固体废物和固体废物提供了重要信息，从而有可能减少污染物排放并增强废物到能源的转化。