Millet Crop Residues for Economical Bioenergy and Chemical Applications

Millet crop residues, an abundant and underutilized agricultural byproduct, present a significant opportunity for sustainable bioenergy and chemical production. This research investigates the potential of millet waste as a feedstock for biofuel and value-added chemical synthesis, emphasizing cost-effectiveness, environmental sustainability, and integration within the circular bioeconomy. The study critically evaluates the current decision-support frameworks and computational modeling tools used in bioenergy system design, including multi-criteria assessment models, ontology-based pathways, and simulation software applications, to optimize conversion processes and yield efficiency. Using a systematic review of literature and case-based computational analyses, the study highlights pathways for converting millet residues into bioethanol, biogas, and other bio-based chemicals, while minimizing environmental footprints and improving energy security. Comparative analyses reveal gaps in existing bioenergy modeling frameworks, particularly in relation to region-specific feedstock variability and techno-economic feasibility. Empirical evidence indicates that millet residues can achieve high conversion efficiencies under optimized processing conditions, providing a renewable energy source with low greenhouse gas emissions. Furthermore, this research identifies the limitations of conventional bioenergy systems, such as process scalability, feedstock pretreatment requirements, and integration with existing agricultural supply chains. The findings underscore the importance of adopting circular economy principles, integrating decision-support tools, and applying simulation-based design approaches to achieve sustainable and economically viable bioenergy production from millet residues. The study concludes that millet crop residues represent a practical, low-cost, and environmentally sound feedstock for bioenergy and chemical applications, with significant potential to contribute to national and global renewable energy targets, while simultaneously supporting rural economies and reducing agricultural waste. Future research should focus on developing region-specific processing models, life-cycle assessments, and techno-economic optimization to fully realize the potential of millet residue-based bioenergy systems (Deshwal & Singh, 2025).

Millet residues, bioenergy, circular economy, biofuel production

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