1. Boundaries and openings of biorefineries towards sustainable biofuel production 2. A perspective on the biorefinery approaches for bioenergy production in a circular bioeconomy process 3. A comprehensive integration of biorefinery concepts for the production of biofuels from lignocellulosic biomass 4. Evaluation of activated sludge derived from wastewater treatment process as a potential biorefinery platform 5. Insights into the Impact of Biorefineries and Sustainable Green Technologies on Circular Bioeconomy 6. Fermentation Technology for Ethanol Production: Current Trends and Challenges 7. Improved enzymatic hydrolysis of lignocellulosic waste biomass: Most essential stage to develop cost effective bio-fuel production 8. Advances and sustainable conversion of waste lignocellulosic biomass into biofuels 9. Lignocellulosic biomass as an alternate source for next generation biofuels 10. Process Intensification of Biobutanol Production 11. Production of n-butanol by clostridial fermentation: A superior alternative renewable liquid fuel 12. Biobutanol Separation using Ionic Liquids as a Green Solvent 13. Synergistic Prospects of Microalgae in Wastewater Treatment and Third Generation Biofuel Production 14. Concurrent reduction of CO2 and generation of biofuels by electrified microbial systems - concepts and perspectives 15. Challenges and opportunities in large scale production of biodiesel 16. Selection of operating parameters for refining of biodiesel by response surface methodology 17. Lipid derived biofuel: production methodologies 18. Interesterification reaction of vegetable oil and alkyl acetate as alternative route for glycerol-free biodiesel synthesis 19. Recent advances of lipase catalyzed greener production of biodiesel in organic reaction media: Economic and sustainable viewpoint 20. Efficient utilization of biomass derived heterogeneous catalyst for biodiesel production 21. Catalytic pyrolysis for upgrading of biooil obtained from biomass 22. Recent Trends in Pyrolysis and Gasification of Lignocellulosic Biomass 23. Experimental Investigation of Performance of Biodiesel with Different Blends in Diesel Engine 24. Techno-Economic Evaluation of 2G Ethanol Production with Co-Products from Rice straw 25. Techno-economic analysis for production of biodiesel using non catalytic transesterification 26. Technoeconomic analysis of biodiesel production from biooil 27. Technoeconomic Analysis of Biofuels Production from Marine Algae 28. Techno-Economic Assessment of Biofuel Production using Thermochemical Pathways 29. Modeling and technoeconomic analysis of biogas production from waste food 30. Biofuels production from Algal biomass: Environmental impact and Techno-Economic Analysis 31. Computer-aided environmental and techno-economic analyses as tools for development of biorefineries under the circular bioeconomy approach 32. Environmental impact analysis of Biofuels and Bioenergy-A global perspective 33. Environmental impacts of biofuels and their blends: A case study on waste vegetable oil derived blend fuels 34. Solid Biofuels Production, Environmental Impact and Techno-Economic Analysis