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Enhancement of Fenton oxidation for removing organic matter from hypersaline solution by accelerating ferric system with hydroxylamine hydrochloride and benzoquinone

机译:通过盐酸羟胺和苯醌加速三价铁体系增强芬顿氧化作用以去除高盐溶液中的有机物

摘要

Fenton oxidation is generally inhibited in the presence of a high concentration of chloride ions. This study investigated the feasibility of using benzoquinone (BQ) and hydroxylamine hydrochloride (HA) as Fenton enhancers for the removal of glycerin from saline water under ambient temperature by accelerating the ferric system. It was found that organics removal was not obviously affected by chloride ions of low concentration (less than 0.1 mol/L), while the mineralization rate was strongly inhibited in the presence of a large amount of chloride ions. In addition, ferric hydrolysis-precipitation was significantly alleviated in the presence of HA and BQ, and HA was more effective in reducing ferric ions into ferrous ions than HA, while the H2O2 decomposition rate was higher in the BQ-Fenton system. Electron spin resonance analysis revealed that OHU production was reduced in high salinity conditions, while it was enhanced after the addition of HA and BQ (especially HA). This study provided a possible solution to control and alleviate the inhibitory effect of chloride ions on the Fenton process for organics removal. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
机译:通常在高浓度氯离子存在下抑制芬顿氧化。这项研究调查了使用苯醌(BQ)和盐酸羟胺(HA)作为Fenton增强剂在环境温度下通过加速三价铁系统去除盐水中甘油的可行性。发现低浓度(小于0.1 mol / L)的氯离子对有机物的去除没有明显影响,而在大量氯离子的存在下,矿化速率受到强烈抑制。此外,在HA和BQ的存在下,铁的水解沉淀得到显着缓解,并且HA在将铁离子还原为亚铁离子方面比HA更有效,而BQ-Fenton系统中的H2O2分解速率更高。电子自旋共振分析表明,在高盐度条件下,OHU的产量减少,而加入HA和BQ(尤其是HA)后,OHU的产量增加。这项研究为控制和减轻氯离子对Fenton去除有机物的过程提供了可能的解决方案。 (C)2015中国科学院生态环境研究中心。由Elsevier B.V.发布

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