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Title: Oxidation of phenol using LaMnO<sub>3</sub> perovskite, TiO<sub>2</sub>, H<sub>2</sub>O<sub>2 </sub>and UV radiation
Authors: Singh, Chandrakant
Rakesh, Meeta
Keywords: Perovskite
Hydrogen peroxide
Photochemical reactor
Issue Date: Nov-2010
Publisher: NISCAIR-CSIR, India
Abstract: LaMnO<sub>3</sub> perovskite has been used for the treatment of aqueous solution of phenol using stoichiometric amount of H<sub>2</sub>O<sub>2</sub> and combination of TiO<sub>2</sub> and UV radiation. The oxidation of phenol was studied with [UV radiation]; [H<sub>2</sub>O<sub>2</sub> and UV]; [TiO<sub>2</sub> and UV]; [LaMnO<sub>3</sub> and UV]; [TiO<sub>2</sub>, H<sub>2</sub>O<sub>2</sub> and UV]; [LaMnO<sub>3</sub>, H<sub>2</sub>O<sub>2</sub> and UV]; to establish the effectiveness of different systems when compared with perovskite catalyst. Results show that the phenol degradation efficiencies decreased in the following order [LaMnO<sub>3</sub>, H<sub>2</sub>O<sub>2</sub> and UV] &gt; [TiO<sub>2</sub>, H<sub>2</sub>O<sub>2 </sub>and UV] &gt; [LaMnO<sub>3</sub> and UV] &gt; [TiO<sub>2</sub> and UV]&gt; [H<sub>2</sub>O<sub>2</sub> and UV ] &gt; [UV]. UV-VIS spectra result of phenol degradation shows that as the concentration of catalyst increases, its activity increases. The optimum concentration of catalyst was 0.60 g/L for 100 ppm phenol solution. Perovskite catalyst after reaction is completely regenerated by calcinations at 800°C for 2 h and retains a similar catalytic performance
Description: 451-454
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.17(6) [November 2010]

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