Dr. Ahmed Hannachi is a full Professor at the Chemical-Process Engineering Department, National Engineering School (ENIG), University of Gabes – Tunisia. He obtained a higher engineering degree in chemical engineering from ENIG. He then completed a PhD in chemical engineering at Ottawa University – Canada. Prof. Hannachi has a teaching and research experience of more than 23 years. Throughout his career, he was appointed several assignments including ENIG vice-dine. He is currently leading a research unit within the chemical engineering & industrial processes research laboratory of ENIG. Among his research focuses is process modeling and simulation as a tool for wise management of water and energy resources relying on holistic approaches involving experimental as well as theoretical work. Most of his research activities were conducted within collaborative projects involving national and international partners from industry and academia. He has published more than 150 research contributions in peer reviewed scientific journals and international conference proceedings. He has supervised to successful completion 12 PhDs and over 125 Masters and Final Year Projects.