This book presents Hydrothermal Liquefaction (HTL) as a versatile and sustainable technology for converting diverse types of wet biowaste into renewable biofuels and valuable chemicals. It argues that HTL addresses two major global challenges simultaneously: waste management and the transition to low-carbon energy. The core narrative follows the following steps: 1. Feedstock Flexibility: HTL can process a wide range of wet biomass without needing energy-intensive drying. 2. Conversion Process: It breaks down complex organic materials into an energy-dense liquid called biocrude. 3. Post-production Upgrading: Raw biocrude is refined into stable, high-quality fuels and chemicals that can replace petroleum-based products. This book concludes that HTL is more than just a waste-to-energy process; it is a platform technology crucial for building a circular bioeconomy and achieving climate goals.

James Moran received a Master’s degree and Ph.D. degree in Mechanical Engineering from the Massachusetts Institute of Technology. He is currently an Associate Professor at the Department of Mechanical Engineering in Chiang Mai University, Thailand, teaching in energy related fields. He is also a consultant to the Energy Research and Development Institute Nakornping, Chiang Mai University. His research interests include biogas upgrading, machine learning applications for biomass, hydrothermal liquefaction, meso-scale combustion, and pollution modelling.

Nakorn Tippayawong received BEng in Mechanical Engineering and Ph.D. in Internal Combustion Engines from Imperial College London, UK. He is a Professor at the Department of Mechanical Engineering, Chiang Mai University. His research interests include biomass conversion, energy efficiency improvement, decarbonization technology, and emission control.

Tossapon Katongtung holds a Ph.D. in Mechanical Engineering from Chiang Mai University, Thailand. He is a researcher with expertise in machine learning model development and has strong specialization in the hydrothermal liquefaction (HTL) of biomass. His work focuses on integrating data-driven approaches with biomass conversion technologies to support sustainable energy development.