Oualid Hamdaoui is a full professor of chemical engineering at King Saud University, in Saudi Arabia. His main research interests are focused on sonochemistry, acoustic cavitation, advanced oxidation processes, separation processes, desalination, and water treatment. He has held several academic appointments as coordinator of Master and Doctorate programs in Chemical and Environmental Process Engineering. He has received many awards including the Thomson Reuters Award in Engineering, Scopus Award (Elsevier) in Chemical Engineering, Francophonie Award for young researchers, option Sciences and Medicine, ranked first on the list of suitable candidates to the title of full professor (technology section) of the twenty-sixth (26th) session of the National University Commission, Abdul-Hameed Shoman Award for Young Arab Researchers in Engineering Sciences, Jordan and the best scientific publication award of The National Agency for the Development of University Research.