Valorization of Agro-Waste Biomass: Impact of Process Conditions on Solid Fuel Properties

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Research scientists worldwide are continuously driving innovations toward achieving a safe and healthy environment across the entire ecosystem. An integral component of this pursuit, as captured in SDG-7, is ensuring access to affordable, reliable, sustainable, and modern energy for all. The discovery of the vastness of bioresources embedded in agricultural and forestry residues mirrors hope and presents an array of challenges. Over the decades, biomass densification has been implemented to upgrade and consolidate the energy value of loose biomass for industrial and domestic applications. This is projected to mitigate the overreliance on fossil fuels as energy sources. However, the combustion and energy performance of biomass have not sufficiently met the energy mix requirements for extensive renewable energy use. The performance of the compacted material is dependent on the type of binder used in the manufacturing process, among other factors. This study explored the details of the available binders and biomass compositions investigated in previous studies. The authors also reported their performance, primarily regarding energy value and combustible behavior. Limitations such as low yield and low energy content, among other performance-related issues in biomass briquettes, can be highly enhanced with the appropriate selection of biomass and compatible binders. Hence, various research attempts, approaches, and methodologies have been conducted to develop solid fuel, and the binder’s influence on the energy content, density, combustion behavior, and other physical attributes of fuel briquettes has been reported.

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