A dispersed plug flow heterogeneous photocatalytic reactor is investigated. A two-dimensional (2D) model adapted to the media, a photocatalyst supported on a macroporous ceramic foam, was built. It is based on the couplings at the local scale between mass transfer, radiative transfer, and reaction kinetics. The simulations are compared to experimental results obtained in the case of the degradation of a target organic micro-pollutant. The 2D concentration fields resulting from these couplings bring to light the very specific characteristic operation of the photoreactor. They allow the low performances of the dispersed plug flow mode when compared to the perfectly mixed, a result both unexpected and original, to be explained. Simulations also reveal the major influence of the foam thickness, the characteristic dimension of the radiative transfer, on the performance of the dispersed plug flow photoreactor.

中文翻译：

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使用 TiO2 涂层泡沫的分散活塞流光催化反应器、二维建模和实验操作模式


研究了分散活塞流非均相光催化反应器。建立了适合介质的二维 (2D) 模型，即支撑在大孔陶瓷泡沫上的光催化剂。它基于局部尺度的传质、辐射传递和反应动力学之间的耦合。将模拟结果与目标有机微污染物降解情况下获得的实验结果进行比较。这些耦合产生的二维浓度场揭示了光反应器非常具体的特征操作。与完美混合相比，它们允许分散活塞流模式的低性能，这是一个意想不到的和原始的结果，需要解释。模拟还揭示了泡沫厚度、辐射传输的特征尺寸对分散活塞流光反应器性能的主要影响。