Leonel Jorge Ribeiro Nunes holds two B.Sc. in Geology (1995 and 2008), two M.Sc. in Hydraulics and Water Resources (1999) and Geological Engineering (2011), a PhD degree in Industrial Engineering and Management (2015), and concluded two Post Doctoral research projects about thermochemical conversion technologies at the University of Beira Interior (2016) and at theUniversity of Aveiro (2017). His professional background is supported by more than 20 years of professional experience in industry. Also developed an academic career and presently supervises or co-supervises several M.Sc. and Ph.D. students at DEGEIT – Department of Economics, Management, Industrial Engineering and Tourism of the University of Aveiro (Portugal) where is Invited Assistant Professor and Researcher at GOVCOPP. Also teach subjects related with biomass energy, environment engineering and sustainability at ISMAI - Instituto Superior da Maia (Portugal) and at Agrarian Higher School of the Polytechnic Institute of Viana do Castelo. His areas of research focus mainly in Biomass Energy in general and in Thermochemical Conversion Technologies and Biomass for Energy Supply Chains in particular. He is involved in several research projects in Portugal, Vietnam and USA and has collaborated as reviewer with many journals. He is author or co-author of more than 50 articles published in several international journals and conference proceedings.João C. O. Matias holds a B.Sc. in Mechanical Engineering (1994) from University of Coimbra, a PhD degree in Production Engineering (2003) and Habilitation for Full Professor "Agregação" (2014) from University of Beira Interior (UBI). Is Full Professor at Dept. of Economics, Management, Industrial Engineering and Tourism (DEGEIT), University of Aveiro (UA), and Researcher at C-MAST/UBI and GOVCOPP/UA, member of the Industrial Engineering and Management and Sustainable Energy Research Groups. Is Coordinator of Scientific Area and Director of PhD Course in Industrial Engineering and Management at DEGEIT/UA. His areas of research focus in Industrial Engineering and Management in general and in Sustainability, Sustainable Energy Systems, Sustainable Design and Management Systems in particular. He is involved in several research projects and he is Editor-in-Chief in a Scientific Journal, member of Editorial Board of several scientific journals, and has collaborated as reviewer with many journals and also international conferences. He is author or co-author of more than 200 articles published in several international journals and conference proceedings.