Selvakumar Periyasamy is an Associate Professor in the Department of Chemical Engineering at Adama Science and Technology University, Ethiopia. He was awarded his Ph.D. in Chemical Engineering from the National Institute of Technology, Tiruchirappalli, India, in 2019. Dr. Selvakumar Periyasamy has over eight years of teaching experience across undergraduate, postgraduate, and doctoral programs, along with more than a decade of research expertise in the fields of Bioenergy, Nanotechnology, Biochemical Engineering, and Environmental Biotechnology.Eduardo Alberto López‑Maldonado holds a BSc. in Chemical Engineering (2009) and a PhD. in Chemical Sciences (2012) from the National Technological Institute of Mexico‑Tijuana, Center for Graduates and Research in Chemistry. His doctoral thesis, a groundbreaking piece of applied scientific research in collaboration with a semiconductor company in Tijuana’s industrial zone, earned him the prestigious Mexican Society of Electrochemistry’s Best Doctoral Thesis award in 2013. The same year, Dr. López‑Maldonado joined the research staff at the Center for Research and Technological Development in Electrochemistry (CIDETEQ) S.C., Tijuana Branch, where he began his research career. His work there involved projects centered on the extraction and properties of natural biopolymers as coagulating, flocculating, and chelating agents.R. Balachandran is a Professor at Adama Science and Technology University, Ethiopia. Over three decades, he has vast experience teaching various Material Science and Engineering courses at undergraduate and postgraduate levels. He was awarded PhD (Engineering) in 2013 from Multimedia University, Malaysia. In his research areas so far, he has secured six research funds in Malaysia and Ethiopia as project leader / principal investigator and one Technology Transfer Project Grant in Ethiopia.

• PART I Synthesis, Characterization and Functional Modification of Metal-Based Nanomaterials for Biofuel Developments 1. Advanced Nanomaterials for Biofuel Production and Their Future Opportunities 2. Chemical Synthesis and Characterization of Emerging Metallic Nanomaterials for Biofuel Production 3. Green Synthesis and Characterization of Emerging Metallic Nanomaterials for Biofuel Production 4. Chemical Synthesis and Characterization of Emerging Metal-Oxide Nanomaterials for Biofuel Production 5. Green Synthesis and Characterization of Emerging Metal-Oxide Nanomaterials for Biofuel Production 6. Emerging Metal-Oxide Nanomaterials for Biofuel Processing 7. Carbon-Based Nanomaterials for Biofuel Production and Processing 8. Preparation and Characterization of Magnetic Nanomaterials for Biofuel Production and Processing PART II Potential Conversion Routes and Biomasses for Biofuel Developments Using Emerging Nanomaterials 9. Emerging Nanomaterials for Thermochemical Conversion of Biomass to Biofuels 10. Emerging Nanomaterials for Physicochemical Conversion of Biomass to Biofuels 11. Use of Nanomaterials in Biofuel Production from Algal Sources 12. Application of Nanomaterials in Biofuel Production from Agricultural Residues 13. Role of Nanomaterials in Biofuel Production from Potential Domestic Wastes 14. Hydrochars as Emerging Energy Sources and Their Processing: A Sustainable Approach to Energy Generation 15. Developing Biomass for Biofuel Production and Its Future Opportunities 16. Potential Feedstocks, Preparation Routes, and Characterization of Biochar for Biofuel Applications 17. Role of Nanomaterials in Biofuel Production from Industrial Wastes 18. Biochar as a Greener Catalyst for Biofuel Production 19. Functional Modification of Biochar for Enhanced Biofuel Conversion 20. Engineered Biochar Preparation and Its Application in Biofuel Technologies 21. Recent Improvements in Nano Additives for Biofuel Processing PART III Circular Economy, Challenges and Future Opportunities of Emerging Nanomaterials for Biofuel Developments 22. Circular Economy Strategies in the Synthesis of Emerging Nanomaterials for Biofuel Production 23. Biorefineries, Bioeconomy, Circular Bioeconomy, and Advanced Bioeconomy in the Sustainable Production of Enhanced Biofuels and Nanomaterials for Energy Storage 24. Challenges and Future Perspectives of Nanomaterials in Biodiesel Development Utilizing Supercritical Reactor Technology