In this paper, the degradation of the diazo dye naphthol blue black (NBB) using the Galvano-Fenton process is studied experimentally and numerically. The simulations are carried out based on the anodic, cathodic, and 34 elementary reactions evolving in the electrolyte, in addition to the oxidative attack of NBB by ${\mathrm{HO}}^{•}$ at a constant rate of $3.35\times {10}^7{ \mathrm{mol}}^{-1}·{\mathrm{m}}^3·{\mathrm{s}}^{-1}$ during the initiation stage of the chain reactions. The selection of the operating conditions including the pH of the electrolyte, the stirring speed, and the electrodes disposition is performed by assessing the kinetics of NBB degradation; these parameters are set to 3, 350 rpm and a parallel disposition with a 3 cm inter-electrode distance, respectively. The kinetics of $\mathrm{Fe}\left(\mathrm{III}\right)$ in the electrolyte were monitored using the principles of Fricke dosimetry and simulated numerically. The model showed more than a 96% correlation with the experimental results in both the blank test and the presence of the dye. The effects of ${\mathrm{H}}_2{\mathrm{O}}_2$ and $\mathrm{NBB}$ concentrations on the degradation of the dye were examined jointly with the evolution of the simulated ${\mathrm{H}}_2{\mathrm{O}}_2$, ${\mathrm{Fe}}^{2+}$, and ${\mathrm{HO}}^{•}$ concentrations in the electrolyte. The model demonstrated a good correlation with the experimental results in terms of the initial degradation rates, with correlation coefficients exceeding 98%.

中文翻译：

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使用废物自发催化剂的 Galvano-Fenton 工程解决方案：实验效率、参数分析和建模解释应用于染料在水中降解的清洁技术

在本文中，使用 Galvano-Fenton 工艺对重氮染料萘酚蓝黑 (NBB) 的降解进行了实验和数值研究。除了 NBB 的氧化攻击外，模拟还基于电解液中发生的阳极、阴极和 34 种基本反应。${何}^{•}$ 以恒定的速率 $3.35\times {10}^7{ \mathrm{摩尔}}^{-1}·{\mathrm{米}}^3·{\mathrm{秒}}^{-1}$在链式反应的起始阶段。通过评估NBB降解动力学来选择电解液的pH值、搅拌速度和电极配置等操作条件；这些参数分别设置为 3、350 rpm 和平行布置，电极间距离为 3 cm。的动力学$铁\left(三\right)$使用 Fricke 剂量学原理监测电解液中的浓度并进行数值模拟。该模型与空白试验和染料存在的实验结果的相关性超过 96%。的影响${\mathrm{H}}_2{\mathrm{哦}}_2$ 和 $\mathrm{NBB}$ 染料降解的浓度与模拟的演变一起检查 ${\mathrm{H}}_2{\mathrm{哦}}_2$, ${铁}^{2+}$， 和 ${何}^{•}$电解液中的浓度。该模型在初始降解率方面与实验结果具有良好的相关性，相关系数超过 98%。