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Ph.D. Dissertation Defense
Fri, Mar 26, 2010 @ 02:30 PM - 04:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Title: SUPEROXIDE RADICAL AND UV IRRADIATION IN ULTRASOUND ASSISTED OXIDATIVE DESULFURIZATION (UAOD):
A POTENTIAL ALTERNATIVE FOR GREENER FUELSBy: Ngo Yeung Chan, Ph.D. candidate in Environmental Engineering, USC ABSTRACT
This study is aimed at improving the current ultrasound assisted oxidative desulfurization (UAOD) process, developed in University of Southern California by Professor Yen's research group, by utilizing superoxide radical as oxidant. Research was also conducted to investigate the feasibility of ultraviolet (UV) irradiation-assisted desulfurization. These modifications can enhance the process with the following achievements: • Meet the upcoming sulfur standards on various fuels including diesel fuel oils and residual oils
• More efficient oxidant with significantly lower consumption in accordance with stoichiometry
• Energy saving by 90%
• Greater selectivity in petroleum compositionThe new system demonstrated over 98% desulfurization efficiency on diesel oils and more than 75% on residual oils with significantly less oxidant and energy consumption. The new process development has been supported by Eco Energy Solutions Inc., Reno, Nevada and Intelligent Energy Inc., Long Beach, California. The feasible applications of superoxide and UV irradiation in the UAOD process could provide deep-desulfurization on various fuels with practical cost.
Location: Kaprielian Hall (KAP) - 209
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
