Stellenbosch University, Stellenbosch, South Africa

Professor Emeritus

Distinguished Professor, ME Dept, King Fahd University of Petroleum & Minerals

Brunel University of London

University of Massachusetts Amherst

Barrett Chair in Sustainable Food Engineering and Professor, University of Guelph

Professor of Chemical Engineering, University of Porto, Portugal

Professor of Thermal Process Engineering, KIT

Firat University

Beijing University of Technology