Professor, Department of Chemical and Biological Engineering, Korea University

Research Scientist, Nalco

AIST Research Center, University of Tabuk, KSA

School Marine Science and Engineering, Hainan University

Senior research fellow, Nanyang Technological University

Georgia Institute of Technology

Associate Professor, Harbin Institute of Technology

Research Scientist, KISR, Kuwait

formerly University of Hawaii

University of Technology Sydney (UTS), Australia