Advanced Biofuel Production from Sugarcane Bagasse

Sugarcane bagasse, traditionally considered waste, is now being efficiently converted into biofuel by researchers at the CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad. This innovative process is set to enhance India's cleaner energy transition and agricultural waste utilization.

Research Overview

• Research Team: The project is led by Alka Kumari, with researchers Sri Chandana and T. Satish, under the guidance of CSIR-IICT director D. Srinivas Reddy.
• Process Highlight: Utilizes Catalytic Hydrothermal Liquefaction (HTL) to convert sugarcane residue into biofuel.
• Role of Deep Eutectic Solvents (DES):
  • DES serves as both catalyst and co-solvent.
  • Presents a green and cost-effective alternative to traditional media and catalysts.

Key Findings

• Annual Sugarcane Bagasse Generation in India: Approximately 90-100 million tonnes.
• Bio-oil Yield: Achieved 52.8 wt%, which is more than double that of conventional catalysts.
• Fuel Quality Improvements:
  • Higher heating values of 39 to 43 MJ/kg.
  • Enhanced hydrogen-to-carbon and oxygen-to-carbon ratios.
• Environmental Impact: Life-cycle assessment indicates an 8% reduction in global warming potential compared to traditional methods.

Economic Analysis

• Return on Investment: 17.64% with a payback period of three to four years for a plant producing around 33 tonnes of bio-oil annually.
• Revenue Contribution: Co-products contribute over 90% of total revenue, highlighting economic viability.

Implications and Future Prospects

• Sustainability: DES-catalysed HTL provides a scalable, sustainable path for biofuel production.
• Integration with Sugar Industry: Potential for decentralized waste-to-fuel conversion, benefiting rural economies and national energy security.