Ozonation of o-cresol in aqueous solutions using a rotating packed-bed reactor.
Experimental results indicated that ozone transfer in the rotating packed contactor was noticeably greater than in a traditional packed-bed contactor under similar operational conditions. Ozonation in the rotating packed contactor has been shown to be feasible for achieving nearly complete decomposition of o-cresol within 1 hour. The decomposition of o-cresol by ozonation in the rotating packed contactor increased with increasing rotor speed and decreasing the gas-liquid flowrate ratio. However, the reduction of total organic carbon during the ozonation of o-cresol was not influenced by variation of rotor speed and gas-liquid flowrate ratio. The species distribution of o-cresol under various solution conditions plays a significant role in determining the decomposition behavior. In most experiments conducted in this study, the decomposition of o-cresol by ozonation was more favorable under alkaline conditions.
Ku
Young
Y
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan. ku508@mail.ntust.edu.tw
Ji
Yan-Shiun
YS
Chen
Hua-Wei
HW
D003408:Cresols / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D003408:Cresols; D010126:Ozone; C034047:2-cresol