Dr. Eric Tan is a senior research engineer and sustainability analyst at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, specializing in the conceptual process design and assessment of biomass conversion pathways for low-carbon fuel and chemical production, and with extensive industry R&D experience, including fuel processing technology, hydrogen production processes, and commercial fuel cell systems. He is the editor of the book Sustainability Engineering: Challenges, Technologies, and Applications and associate editor of Frontier in Sustainability's Sustainable Chemical Process Design and Future Perspectives on Separation Technologies. He is a senior member of the American Institute of Chemical Engineers (AIChE), vice chair, technical advisor of the AIChE's Sustainable Engineering Forum Leadership Team, and an American Center for Life Cycle Assessment (ACLCA) certified LCA Professional. Dr. Tan has made significant contributions to the fields of heterogeneous catalysis, biorefinery, process intensification, decarbonization, circular economy, and sustainability, as reflected in his numerous publications. He holds a Ph.D. in Chemical Engineering from the University of Akron and has a master's degree in Sustainability from Harvard University.