Celso Eduardo Tuna is a mechanical engineer who graduated from the São Paulo State University (UNESP), Brazil, in 1989. He obtained a master’s degree and Ph.D. in Mechanical Engineering from UNESP, where he is also an associate professor, in 1995 and 1999, respectively. Dr. Tuna is a CNPq research and productivity fellow, professor of the post-graduate course in Mechanical Engineering, and coordinator of the Bioenergy Research Institute laboratory of UNESP in Guaratinguetá. He has published six book chapters and twenty-eight indexed scientific articles. His research interests include bioenergy, hydrogen generation, renewable energy, and cogeneration.