Semiconductor Mediated Photocatalysed Degradation of a Pesticide Derivative, Acephate in Aqueous Suspensions of Titanium Dioxide
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M. Atiqur Rahman
und
D. Bahnemann
Abstract
The photocatalysed degradation of a pesticide derivative, acetylphosphoramidothioic acid O,S-dimethyl ester, (Acephate, 1) has been investigated in aqueous suspensions of titanium dioxide (TiO2) by monitoring the depletion in total organic carbon (TOC) content as a function of irradiation time under a variety of conditions. The degradation kinetics were studied using different parameters such as pH, substrate and photocatalyst concentration, different kind of titanium dioxide and in the presence of electron acceptors such as H2O2 and KBrO3 besides molecular oxygen. The photocatalytic activity was found to be better for Degussa P25 as compared to other photocatalysts. From the obtained data a detailed account of the influence of various parameters on the mineralization rate have been discussed. The degradation products were analyzed by GC/MS technique and the probable pathways for the formation of different products have been proposed.
© 2016 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Preface
- Removal of PAHs from Creosote Oil Contaminated Soil by Addition of Concentrated H2O2 and Biodegradation
- Kinetics of Wet Oxidation Reactions
- Biodegradability Enhancement of Wastewater Containing 4-Chlorophenol by Means of Photo-Fenton
- Experimental and Modelling Approach for the Comparison of Fenton and Electro-Fenton Processes. Preliminary Results
- TiO2/C Photocatalyst Prepared by Ethanol Vapour Treatment of TiO(OH)2
- Effects of Carbon Coating on TinO2n-1 for Decomposition of Iminoctadine Triacetate in Aqueous Solution under Visible Light
- Hybrid Plasma-Catalyst System for the Removal of Trichloroethylene in Air
- Photocatalytic Oxidation of Emerging Contaminants: Kinetics and Pathways for Photocatalytic Oxidation of Pharmaceutical Compounds
- Photocatalytic Degradation of four Textile Azo Dyes in Aqueous TiO2 Suspensions: Practical Outcomes and Revisited Pathways
- Decolouration of Dye Solutions Using Photoelectrocatalysis and Photocatalysis
- Aged Raw Landfill Leachate: Membrane Fractionation, H2O2/UV Treatment and Molecular Size Distribution Analysis
- Electrochemical Treatment of Trace Endocrine Disrupting Chemicals with a Three-Dimensional Electrode System
- Semiconductor Mediated Photocatalysed Degradation of a Pesticide Derivative, Acephate in Aqueous Suspensions of Titanium Dioxide
- Hexavalent Chromium Remediation by Bore-Hole Placed Reduction Barriers and Monitored Natural Attenuation
Artikel in diesem Heft
- Preface
- Removal of PAHs from Creosote Oil Contaminated Soil by Addition of Concentrated H2O2 and Biodegradation
- Kinetics of Wet Oxidation Reactions
- Biodegradability Enhancement of Wastewater Containing 4-Chlorophenol by Means of Photo-Fenton
- Experimental and Modelling Approach for the Comparison of Fenton and Electro-Fenton Processes. Preliminary Results
- TiO2/C Photocatalyst Prepared by Ethanol Vapour Treatment of TiO(OH)2
- Effects of Carbon Coating on TinO2n-1 for Decomposition of Iminoctadine Triacetate in Aqueous Solution under Visible Light
- Hybrid Plasma-Catalyst System for the Removal of Trichloroethylene in Air
- Photocatalytic Oxidation of Emerging Contaminants: Kinetics and Pathways for Photocatalytic Oxidation of Pharmaceutical Compounds
- Photocatalytic Degradation of four Textile Azo Dyes in Aqueous TiO2 Suspensions: Practical Outcomes and Revisited Pathways
- Decolouration of Dye Solutions Using Photoelectrocatalysis and Photocatalysis
- Aged Raw Landfill Leachate: Membrane Fractionation, H2O2/UV Treatment and Molecular Size Distribution Analysis
- Electrochemical Treatment of Trace Endocrine Disrupting Chemicals with a Three-Dimensional Electrode System
- Semiconductor Mediated Photocatalysed Degradation of a Pesticide Derivative, Acephate in Aqueous Suspensions of Titanium Dioxide
- Hexavalent Chromium Remediation by Bore-Hole Placed Reduction Barriers and Monitored Natural Attenuation
