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<p>This study explores the synthesis and optimization of biofuel briquettes derived from a blend of cotton stalk, <i>Prosopis Juliflora</i>, and sesame biomass for sustainable cement pyroprocessing. The biomass was subjected to torrefaction, with the process parameters—temperature, time, and composition—optimized using Response Surface Methodology (RSM) to enhance calorific value and reduce carbon emissions. Proximate, ultimate, FTIR, SEM-EDX, and ash chemistry analyses were conducted to characterize the briquettes. The optimized torrefaction conditions were determined to be 166.06&#xa0;°C for 47.70&#xa0;min with a blending composition of 40 wt%, resulting in a calorific value of 6.25 Mcal/kg. The briquettes exhibited favorable physical properties including a bulk density of 1.03&#xa0;g/cm³, shatter resistance of 95%, water penetration resistance of 50.45%, and impact resistance of 60%. Ash analysis revealed significant contents of SiO₂ (47.54%), Al₂O₃ (24.65%), and CaO (9.42%) indicating their suitability for cement pyroprocessing. This research demonstrates the potential of biofuel briquettes to mitigate greenhouse gas emissions and reduce reliance on imported fossil fuels in the cement industry, promoting environmental sustainability.</p>

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Characterization and optimization of torrefied biomass briquettes from cotton stalk, Prosopis juliflora, and sesame husk for partial fuel replacement in cement pyroprocessing using response surface methodology

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Kinfe Beyene Gebru,
  • Abdisa Jabesa,
  • Yohannes Assefa Degaga,
  • Gebrihans Haile Gebrewbet

摘要

This study explores the synthesis and optimization of biofuel briquettes derived from a blend of cotton stalk, Prosopis Juliflora, and sesame biomass for sustainable cement pyroprocessing. The biomass was subjected to torrefaction, with the process parameters—temperature, time, and composition—optimized using Response Surface Methodology (RSM) to enhance calorific value and reduce carbon emissions. Proximate, ultimate, FTIR, SEM-EDX, and ash chemistry analyses were conducted to characterize the briquettes. The optimized torrefaction conditions were determined to be 166.06 °C for 47.70 min with a blending composition of 40 wt%, resulting in a calorific value of 6.25 Mcal/kg. The briquettes exhibited favorable physical properties including a bulk density of 1.03 g/cm³, shatter resistance of 95%, water penetration resistance of 50.45%, and impact resistance of 60%. Ash analysis revealed significant contents of SiO₂ (47.54%), Al₂O₃ (24.65%), and CaO (9.42%) indicating their suitability for cement pyroprocessing. This research demonstrates the potential of biofuel briquettes to mitigate greenhouse gas emissions and reduce reliance on imported fossil fuels in the cement industry, promoting environmental sustainability.