Ozonation of o-cresol in aqueous solutions using a rotating packed-bed reactor. |
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Authors: | Young Ku Yan-Shiun Ji Hua-Wei Chen |
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Institution: | Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan. ku508@mail.ntust.edu.tw |
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Abstract: | 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. |
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