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Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water

机译：基于UV LED在水中污染修复的紫外光催化反应器的节能

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Photocatalytic technology using TiO_2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO_2) is a semiconductor material with strong UV absorption band and exhibits strong photocatalytic activity. The photocatalytic activity of TiO_2 powders have been extensively studied, using UV light sources. However, the incident photons that initiate the process of photocatalytic oxidation using titanium dioxide are not efficiently used, this is responsible for the low photonic efficiency that characterise oxidation of aqueous pollutants hence its limitation in industrial applications. Periodic illumination has been investigated as a means of increasing the photonic efficiency in a photoreactor with acid orange as a model pollutant. Results indicate more than four-fold increase in photonic efficiency through periodic illumination compared to continuous illumination. This approach can improve the energy efficiency of the photocatalytic water treatment systems.
机译：使用TiO_2的光催化技术是水处理的新出现方法之一，尤其是去除复杂有机物如杀虫剂，激素或腐殖酸的最终步骤。二氧化钛（TiO_2）是一种具有强UV吸收带的半导体材料，具有强烈的光催化活性。使用UV光源已经过度研究了TiO_2粉末的光催化活性。然而，未使用二氧化钛引发光催化氧化过程的入射光子，这是负责含水污染物氧化的低光子效率，因此在工业应用中的限制。已经研究了周期性照明作为将光反应器中的光子效率与酸橙作为模型污染物增加的手段。与连续照明相比，通过周期性照明表示光子效率的增加超过四倍。这种方法可以提高光催化水处理系统的能效。

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