University of Aegean,m Department od Environmental Science, Mytilini, Greece

Graver Technologies LLC

Research Engineer in chemistry, CNRS-University of Montpellier

Professor of civil/environmental engineering

Materials Science and Engineering, University of Wisconsin-Milwaukee

Post Doctoral Fellow, Mechanical Engineering Department, MIT, CAMBRIDGE, MA

Postdoc Fellow, University of Wisconsin Milwaukee

KSCSTE-Centre for Water Resources Development and Management, Kozhikode

Assistant Professor, King Fahd University of Petroleum and Minerals

Nanomaterials Division, Botswana Institute for Technology Research and Innovation