期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 9, 期 3, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2021.105205
关键词
Electrochemical oxidation; Boron-doped diamond; Cartap; Padan 95SP
资金
- Vietnam International Education Development, Vietnam and Chemnnitz University of Technology, Germany
The study investigated the degradation of Cartap in Padan 95SP using boron-doped diamond (BDD) anodes, determining the optimal conditions for the process. The results showed that under specific conditions, BDD can efficiently degrade Cartap.
Aromatic compounds can be efficiently degraded using boron-doped diamond (BDD) anodes by the anodic oxidation based on the generation of hydroxyl radicals (center dot OH). In this study, the degradation of Cartap in Padan 95SP (a pesticide) by BDD via the reaction between Cartap and oxidizing species (such as hydroxyl radicals, active chlorine, and persulfate) was investigated. Operating parameters including applied current density, the types of electrolyte, and the initial concentration of Padan 95SP were studied in order to determine their effect on the degradation efficiency of Cartap. The concentration of Cartap was determined by UV-Vis spectroscopy according to a 5,5-Dithiobis-(2-nitrobenzoic acid) procedure. The optimal conditions for Cartap degradation were determined (concentration of electrolyte: 0.05 M Na2SO4, initial concentration of Padan 95SP of 300 mg.L-1, pH = 3, current density: j = 20 mA.cm(-2)). High Performance Liquid Chromatography and Gas Chromatography/Mass Spectrometry techniques were used to characterize commercially available Padan 95SP, the decomposition of Cartap and the formation of electrochemical by-products.
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