Lignocellulosic biomass is a vital resource for providing clean future energy with a sustainable environment. Besides lignocellulosic residues, nonlignocellulosic residues such as sewage sludge from industrial and municipal wastes are gained much attention due to its large quantities and ability to produce cheap and clean energy to potentially replace fossil fuels. These cheap and abundantly resources can reduce global warming owing to their less polluting nature. The low-quality biomass and high ash content of sewage sludge-based thermal conversion processes face several disadvantages towards its commercialization. Therefore, it is necessary to utilize these residues in combination with coal for improvement in energy conversion processes. As per author information, no concrete study is available to discuss the synergy and decomposition mechanism of residues blending. The objective of this study is to present the state-of-the-art review based on the thermal coconversion of biomass/sewage sludge, coal/biomass, and coal/sewage sludge blends through thermogravimetric analysis (TGA) to explore the synergistic effects of the composition, thermal conversion, and blending for bioenergy production. This paper will also contribute to detailing the operating conditions (heating rate, temperature, and residence time) of copyrolysis and cocombustion processes, properties, and chemical composition that may affect these processes and will provide a basis to improve the yield of biofuels from biomass/sewage sludge, coal/sewage sludge, and coal/biomass blends in thermal coconversion through thermogravimetric technique. Furthermore, the influencing factors and the possible decomposition mechanism are elaborated and discussed in detail. This study will provide recent development and future prospects for cothermal conversion of biomass, sewage, coal, and their blends.

中文翻译：

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使用热重分析对生物质、污泥、煤及其混合物的热共转化进行综合评价

木质纤维素生物质是提供具有可持续环境的清洁未来能源的重要资源。除了木质纤维素残留物，非木质纤维素残留物，例如工业和城市垃圾中的污水污泥，由于其数量众多且能够生产廉价和清洁的能源以潜在地替代化石燃料，因此备受关注。这些廉价而丰富的资源由于其污染较少的性质可以减少全球变暖。基于污水污泥的热转化过程的低质量生物质和高灰分含量在其商业化方面面临几个缺点。因此，有必要将这些残渣与煤结合使用，以改进能源转换过程。根据作者信息，没有具体的研究可以讨论残留物混合的协同作用和分解机制。本研究的目的是通过热重分析 (TGA) 展示基于生物质/污水污泥、煤/生物质和煤/污水污泥混合物的热共转化的最新评论，以探索用于生物能源生产的成分、热转化和混合。本文还将有助于详细说明可能影响这些过程的共热分解和共燃过程的操作条件（加热速率、温度和停留时间）、性质和化学成分，并将为提高生物质/共燃生物燃料的产量提供基础。污水污泥、煤/污水污泥和煤/生物质混合物通过热重技术进行热共转化。此外，详细阐述和讨论了影响因素和可能的分解机制。这项研究将为生物质、污水、煤及其混合物的热热转化提供最新的发展和未来的前景。