Photocatalytic decomposition of aqueous waste containing EDTA using nanosized gallium oxide/H2O2 system. (1st January 2013)

• Record Type: Journal Article
• Authors: Seshadri, H.; Sasidhar, P.; Sinha, P.K.
• Is Part Of: International journal of environment and waste management. Volume 11:Number 3(2013)
• Page Start: 244
• Page End: 254
• Publication Date: 2013-01-01
• Subjects: photocatalyst -- gallium oxide -- EDTA -- Ethylenediaminetetraacetic acid -- hydrogen peroxide -- decontamination factor; Refuse and refuse disposal -- Environmental aspects -- Periodicals; Refuse collection -- Environmental aspects -- Periodicals; Recycling (Waste, etc.) -- Periodicals; 363.72805
• Languages: English
• ISSNs: 1478-9876

Abstract

Oxidative degradation of Ethylenediaminetetracetic acid in aqueous solution using the polymorphs of gallium oxide, γ- and β-Ga2 O3 /H2 O2 system was studied in this paper. Nanophases of γ- and β-Ga2 O3 were synthesised through solution combustion method and characterized using Powder X-ray diffraction (XRD), Thermogravimetry (TG), Differential Thermal Analysis (DTA), and Raman spectra. The photocatalytic degradation efficiency these catalysts was compared with P-25 TiO2 . 5 mg of Ga2 O3 + 0.5 ml of H2 O2 was employed as photocatalyst for the degradation of 1000 mg/l EDTA. Kinetics of EDTA degradation followed the order: β-Ga2 O3 +H2 O2 > γ-Ga2 O3 + H2 O2 > P-25 TiO2 + H2 O2 .