Department of Environmental Resources Management, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2013;48(9):1012-8. doi: 10.1080/10934529.2013.773207.
This study was undertaken to investigate the feasibility of applying the Fered-Fenton process to the degradation of m-phenylenediamine, by examining the effect of varying the initial H2O2 and Fe(2+) concentrations, the initial pH and electric current on the process efficiency. The degradation behavior of m-phenylenediamine was also compared to that of aniline. The Fered-Fenton reactor consists of anodes and cathodes with mesh-type titanium metal coated with IrO2/RuO2 and stainless steel, respectively. The experiments showed that m-phenylenediamine was rapidly degraded by the Fered-Fenton process. Initial pH of 3.2 is optimal for the removal of m-phenylenediamine and chemical oxygen demand (COD). m-Phenylenediamine and COD removal efficiencies increased with the increasing electrical current from 0 A to 4 A, and decreased with a further increase in electrical current. Optimum efficiency resulting in 100% degradation of m-phenylenediamine and elimination of 30% of COD was achieved at pH 3.2 at 60 min in the presence of 10 mM of m-phenylenediamine, 0.268 mM of Fe(2+), 43.6 mM of H2O2, and under a current of 4 A.
本研究旨在探讨 Fered-Fenton 工艺在间苯二胺降解中的应用可行性，通过考察初始 H2O2 和 Fe(2+)浓度、初始 pH 值和电流对处理效率的影响，来研究该工艺。同时，将间苯二胺的降解行为与苯胺进行了比较。Fered-Fenton 反应器由涂有 IrO2/RuO2 的钛网和不锈钢网分别作为阳极和阴极组成。实验表明，间苯二胺可被 Fered-Fenton 工艺快速降解。初始 pH 值为 3.2 时，间苯二胺和化学需氧量（COD）的去除效果最佳。间苯二胺和 COD 的去除效率随电流从 0 A 增加至 4 A 而增加，随电流进一步增加而降低。在 10 mM 间苯二胺、0.268 mM Fe(2+)、43.6 mM H2O2 和 4 A 电流的条件下，在 pH 3.2 下 60 分钟时，可达到 100%降解间苯二胺和 30%去除 COD 的最佳效率。
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