He graduated from the School of Chemical Engineering of the National Technical University of Athens in 1976 and obtained his Ph.D. in 1983. He became Teaching Assistant in 1979 and then promoted to Lecturer (1985), Assistant Professor (1988), Associate Professor (1992), Professor (1996) AND Emeritus Professor (2021),at the same School .
Since 1989 he has been Visiting Professor at the Dept. of Materials Science and Engineering, at the University of Illinois at Urbana-Champaign, where he became adjunct Professor in 1994. He was vice-Rector (2000-2003) and Rector (2003-2006) of the National Technical University of Athens and also obtained several positions, such as:
Treasurer and Secretary General of the Hellenic Polymer Society, Chairman of the Greek Association of Chemical Engineers, Vice-Chairman of the Dept. of Chemical Engineering, member of the General Assembly of the Technical Chamber of Greece, member of the scientific Committee of Chemical Engineers at the Technical Chamber of Greece, Chairman of ETAT S.A..(Research Institute), Chairman of the Energy Committee of the Technical Chamber of Greece, Secretary General of the Ministry of Environment, Energy and Climate Change, Chairman of the Hellenic Solid Waste Management Association, Chairman of the Hellenic Polytechnic Association,
His research activities focus on the topics of materials science and engineering, solid waste management, recycling and reuse, including both urban and industrial waste. as well as materials science and engineering. He has published more than 120 publications including books, monographs, papers in international scientific journals and conference presentations and lectures, with more than 1500 citations and an h-factor of 24.