
Professor Dr. Theo Tsotsis
Professor
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Biography
Professor Tsotsis received his Ph.D. in Chemical Engineering from the University of Illinois at Urbana-Champaign in 1978. He joined the University of Southern California (USC) and currently holds the title of Robert E. Vivian Professor of Energy Resources in the Mork Family Department of Chemical Engineering and Materials Science, where he has served as the department's inaugural Chair since 2005. Professor Tsotsis’ research interests encompass transport phenomena, adsorption, reaction in complex porous media, reaction engineering, reactor design, and membrane separations. He has authored 280 technical papers and book chapters, and holds eight U.S. and European patents. He co-founded and was an executive board member of USC’s NSF/IGERT Center for Environmental Engineering, and is a Fellow of the American Institute of Chemical Engineers (AIChE). His research includes work on reaction engineering and membrane separation processes, sorption transport phenomena, reactor engineering applications involving biomass and renewable energy sources, and environmental reaction engineering focused on landfill site remediation. He employs both experimental and theoretical approaches, utilizing continuum and molecular simulation techniques.
Research Interests
Awards
WPI 2017 Ed Ma Lectureship
OCEC President's Award
AIChE Fellow
NAMS Technical Co-Chair Meeting
ISCRE Technical Co-Chair
UOP Invitational Lectureship
Chevron Visiting Professor
USC Research Scholar
Welch Foundation Fellow
Chevron Young Faculty Award
Oak Ridge Associated Universities Fellowship
National Student Award
Requirements for University of Southern California
Master Program
Requirements
GPA Requirement
TOEFL
IELTS
GRE General
Prerequisites
Application Checklist
- Online application
- Official transcripts
- Personal Statement
- Resume/CV
- Letters of Recommendation (not required for MS CS, but allowed)
Specialization Notes
GRE is NOT required for Master's applicants for 2025-2026.