Hassan El Bari, is a Professor in Ibn Tofail University-Morocco since 1988 and has obtained the PhD in Material Sciences from INPL (France) in 1987 and also has "Doctorat d’Etat" in Mechanical Engineering, University Mohamed V – Morocco, since 1998. He is the President of the Moroccan Association of Solid Waste. He was Master Degree Coordinator: Waste Management and Recovery 2010-2014. Member of the International Solid Waste Association (ISWA) 2004-2014. He has been involved in many funded projects as coordinator and partner. He has a long experience in teaching Solid Waste Management; Biomass and Bioenergy; Anaerobic Digestion Technology Expertise: Waste Management and Bioenergy.