Formation of hydrogen peroxide and treatment of Sunset Yellow wastewater using pulsed high-voltage discharge system
| Autor: | Ying Liu, Shuaijun Lu, Yuepeng Ma, Zhongqi Ren, Zhiyong Zhou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chemistry
General Chemical Engineering chemistry.chemical_element High voltage 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper 0104 chemical sciences chemistry.chemical_compound Wastewater Chemical engineering Environmental chemistry Electrode Degradation (geology) Sunset yellow 0210 nano-technology Hydrogen peroxide |
| Zdroj: | The Canadian Journal of Chemical Engineering. 95:290-296 |
| ISSN: | 0008-4034 |
| DOI: | 10.1002/cjce.22658 |
| Popis: | Pulsed high-voltage discharge, one of the advanced oxidation processes, was used for the treatment of Sunset Yellow wastewater. The effects of discharge type, initial pH, conductivity and bubbling gas type on the formation of H2O2 were investigated in the mechanism experiments using deionized water. The concentration of H2O2 formed in hybrid series discharge mode was higher than that formed in hybrid gas-liquid discharge and liquid discharge modes. Moreover, pH of 1 and low conductivity were beneficial to the formation of H2O2. Bubbling O2 could obviously enhance the generation of H2O2. Afterwards, the effects of discharge type, initial pH and bubbling gas type were also studied in the degradation experiments of Sunset Yellow. The experiment results were consistent with the mechanism experiments. Fenton reaction happened by the introduction of Fe2+ into the discharge process, which obviously enhanced the degradation of Sunset Yellow. Besides, the effects of initial pH and Fe2+ concentration on the Sunset Yellow degradation followed the second-order-kinetics. Moreover, the degradation efficiency of Sunset Yellow with copper mesh as electrode was much higher than that with needle electrode. This article proposed a feasible approach to deal with Sunset Yellow wastewater. This article is protected by copyright. All rights reserved |
| Databáze: | OpenAIRE |
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