title: Catalytic wet peroxidation of pyridine bearing wastewater by cerium supported SBA-15.
abstract: Cerium supported SBA-15 (Ce/SBA-15) was synthesized by two-step synthesis method in acidic medium. It was further characterized by various characterization techniques such as X-ray diffraction, field-emission scanning electron microscopy, Fourier transform infrared spectroscopy and N2 adsorption-desorption pore size distribution analysis. The Ce/SBA-15 showed highly ordered meso-structure with pore diameter≈70-100Ǻ and pore volume≈0.025cm(3)/g. Ce/SBA-15 was further evaluated as a catalyst for the oxidation of highly toxic and non-biodegradable material, pyridine, by catalytic wet-peroxidation method. The effects of various operating parameters such as catalyst dose (0.5-6g/l), stoichiometric ratio of H2O2/pyridine (1-6), initial pyridine concentration (50-800mg/l) and temperature (313-358K) have been evaluated and optimized. Ce/SBA-15 showed stable performance during reuse for six cycles with negligible cerium leaching. Kinetic and thermodynamic parameters and operation cost have also been determined.
authors: Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667 Uttarakhand, India.
authors: V
authors: V
authors: Subbaramaiah
authors: Vimal Chandra
authors: VC
authors: Srivastava
authors: Indra Deo
authors: ID
authors: Mall
mesh_terms: D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D016062:Porosity; D011725:Pyridines / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D002563:Cerium; D006861:Hydrogen Peroxide; D016877:Oxidants; D011725:Pyridines; D012822:Silicon Dioxide; D062065:Wastewater; D014874:Water Pollutants, Chemical; C509969:SBA-15; C023666:pyridine