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Design of an electrochemical flow reactor prototype to the electro-oxidation of amoxicillin in aqueous media using modified electrodes with transition metal oxides
Journal of Environmental Chemical Engineering ( IF 7.4 ) Pub Date : 2022-01-13 , DOI: 10.1016/j.jece.2022.107165
J.A. Castro 1 , J.T. López-Maldonado 1 , J. Cárdenas 1 , G. Orozco 1 , E. Bustos 1 , F.F. Rivera 1
Affiliation  

This research study integrated the development of modified large-size catalytic electrodes while employing painting and electrophoresis for Ti anodes and a proposed cylindrical reactor design using computational fluid dynamics (CFD) and experimental characterization tests. These development studies explored flow-by and parallel flow reactor configurations to remediate aqueous Amoxicillin (AMX). Simulation studies suggested that the velocity magnitude field and resident time distribution (RTD) curves were improved when the parallel flow configuration was employed. These findings followed based on the width and tail of the calculated RTD when both configurations were considered. The improved behaviors were associated with the avoiding of canalization or low-velocity stagnation zones in the reactor. Additionally, in the parallel flow configuration, the RTD curve maximum was reached near the dimensionless time, θ = 1, when general laminar flow rates (Re of 85 and 113) were used. Through both calculated potential and current distributions, in the parrel flow system, the potential field has a uniform distribution in the flow direction, with minimal edge formation. Since flow and electrical simulation suggested that the parallel flow configuration is better able to perform an electrochemical process, it was chosen and a processor was constructed. The constructed prototype achieved a maximum degradation efficiency of 92.3% (COD), and abatement of acute toxicity, in the reactor equipped with an electrophoretic modified anode, employing a current density of 7.5 A m−2.



中文翻译:

使用过渡金属氧化物修饰电极设计电化学流动反应器原型以在水介质中电氧化阿莫西林

这项研究整合了改进的大尺寸催化电极的开发,同时采用了钛阳极的涂漆和电泳,以及使用计算流体动力学 (CFD) 和实验表征测试提出的圆柱形反应器设计。这些发展研究探索了流式和平行流反应器配置以修复水性阿莫西林 (AMX)。模拟研究表明,当采用平行流配置时,速度幅度场和驻留时间分布(RTD)曲线得到了改善。当考虑两种配置时,这些发现基于计算的 RTD 的宽度和尾部。改进的行为与避免反应器中的渠道化或低速停滞区有关。此外,在平行流配置中,当使用一般层流速率(Re 为 85 和 113)时,在无量纲时间 θ = 1 附近达到 RTD 曲线最大值。通过计算出的电势和电流分布,在平行流系统中,势场在流动方向上分布均匀,边缘形成最小。由于流动和电气模拟表明平行流动配置能够更好地执行电化学过程,因此选择了它并构建了一个处理器。所构建的原型在配备有电泳改性阳极的反应器中实现了 92.3% (COD) 的最大降解效率,并减少了急性毒性,采用 7.5 A m 的电流密度 通过计算出的电势和电流分布,在平行流系统中,势场在流动方向上分布均匀,边缘形成最小。由于流动和电气模拟表明平行流动配置能够更好地执行电化学过程,因此选择了它并构建了一个处理器。所构建的原型在配备有电泳改性阳极的反应器中实现了 92.3% (COD) 的最大降解效率,并减少了急性毒性,采用 7.5 A m 的电流密度 通过计算出的电势和电流分布,在平行流系统中,势场在流动方向上分布均匀,边缘形成最小。由于流动和电气模拟表明平行流动配置能够更好地执行电化学过程,因此选择了它并构建了一个处理器。所构建的原型在配备有电泳改性阳极的反应器中实现了 92.3% (COD) 的最大降解效率,并减少了急性毒性,采用 7.5 A m 的电流密度 由于流动和电气模拟表明平行流动配置能够更好地执行电化学过程,因此选择了它并构建了一个处理器。所构建的原型在配备有电泳改性阳极的反应器中实现了 92.3% (COD) 的最大降解效率,并减少了急性毒性,采用 7.5 A m 的电流密度 由于流动和电气模拟表明平行流动配置能够更好地执行电化学过程,因此选择了它并构建了一个处理器。所构建的原型在配备有电泳改性阳极的反应器中实现了 92.3% (COD) 的最大降解效率,并减少了急性毒性,采用 7.5 A m 的电流密度-2

更新日期:2022-01-18
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