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Nanoporous activated carbon fluidized bed catalytic oxidations of aqueous o, p and m-cresols: kinetic and thermodynamic studies |
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| Authors: | S Karthikeyan G Sekaran V K Gupta |
| Institution: | 1. Environmental Technology Division, Council of Scientific & Industrial Research (CSIR), Central Leather Research Institute (CLRI), Adyar, Chennai, 600 020, India 2. Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India 3. Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia |
| Abstract: | Nanoporous activated carbon prepared from rice husk through precarbonisation at 400 °C and phosphoric acid activation at 800 °C was used as fluidized bed in Fenton oxidation of the o, p and m-cresols in aqueous solution. The efficiencies of homogeneous Fenton oxidation, fluidized Fenton oxidation and aerobic biological oxidation systems for the removal of o, p and m-cresols in aqueous solution have been compared. The kinetic constants and the thermodynamic parameters for the homogeneous Fenton, heterogeneous Fenton and aerobic biological oxidations of o, p and m-cresols in synthetic wastewater were determined. The degradation of cresols in synthetic wastewater was confirmed using FT-IR, 1H-NMR and UV–visible spectroscopy. |
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