Department of Chemical Engineering, Grupo IMAES, Escuela Técnica Superior de Ingenieros Industriales, Instituto de Investigaciones Energéticas y Aplicaciones Industriales (INEI), Universidad de Castilla-La Mancha, Avda. Camilo José Cela 3, 13071, Ciudad Real, Spain.
Department of Chemical Engineering, Grupo IMAES, Escuela Técnica Superior de Ingenieros Industriales, Instituto de Investigaciones Energéticas y Aplicaciones Industriales (INEI), Universidad de Castilla-La Mancha, Avda. Camilo José Cela 3, 13071, Ciudad Real, Spain.
J Environ Manage. 2018 Mar 15;210:122-130. doi: 10.1016/j.jenvman.2018.01.012. Epub 2018 Jan 13.
The aim of this work was to evaluate the performance of a novel self-autonomous reactor technology (capable of working with solar irradiation and artificial UV light) for water treatment using aniline as model compound. This new reactor design overcomes the problems of the external mass transfer effect and the accessibility to photons occurring in traditional reaction systems. The UV-light source is located inside the rotating quartz drums (where TiO is immobilized), allowing light to easily reach the water and the TiO surface. Several processes (UV, HO, Solar, TiO, Solar/TiO, Solar/TiO/HO and UV/Solar/HO/TiO) were tested. The synergy between Solar/HO and Solar/TiO processes was quantified to be 40.3% using the pseudo-first-order degradation rate. The apparent photonic efficiency, ζ, was also determined for evaluating light utilization. For the Solar/TiO/HO process, the efficiency was found to be practically constant (0.638-0.681%) when the film thickness is in the range of 1.67-3.87 μm. However, the efficiency increases up to 2.67% when artificial UV light was used in combination, confirming the efficient design of this installation. Thus, if needed, lamps can be switched on during cloudy days to improve the degradation rate of aniline and its mineralization. Under the optimal conditions selected for the Solar/TiO/HO process ([HO] = 250 mg/L; pH = 4, [TiO] = 0.65-1.25 mg/cm), 89.6% of aniline is degraded in 120 min. If the lamps are switched on, aniline is completely degraded in 10 min, reaching 85% of mineralization in 120 min. TiO was re-used during 5 reaction cycles without apparent loss in activity (<2%). Quantification of hydroxyl radicals and dissolved oxygen allows a chemical-based explanation of the process. Finally, the UV/Solar/TiO/HO process was found to have lower operation costs than other systems described in literature (0.67 €/m).
这项工作的目的是评估一种新型自主动力反应堆技术（能够利用太阳辐射和人工紫外线）在水处理中的性能，以苯胺作为模型化合物。这种新的反应堆设计克服了传统反应系统中存在的外扩散效应和光子可达性问题。紫外线光源位于旋转石英滚筒内部（其中固定有 TiO），可使光线轻松到达水和 TiO 表面。测试了几种工艺（UV、HO、Solar、TiO、Solar/TiO、Solar/TiO/HO 和 UV/Solar/HO/TiO）。通过伪一级降解速率，定量确定了 Solar/HO 和 Solar/TiO 过程之间的协同作用为 40.3%。还确定了表观光子效率 ζ，用于评估光利用。对于 Solar/TiO/HO 工艺，当膜厚在 1.67-3.87μm 范围内时，发现效率基本保持不变（0.638-0.681%）。然而，当结合使用人工紫外线时，效率可提高至 2.67%，证实了该装置的高效设计。因此，如果需要，可以在阴天打开灯以提高苯胺的降解率和矿化率。在为 Solar/TiO/HO 工艺选择的最佳条件下（[HO] = 250 mg/L；pH = 4，[TiO] = 0.65-1.25 mg/cm），120min 内可降解 89.6%的苯胺。如果打开灯，苯胺可在 10min 内完全降解，在 120min 内达到 85%的矿化率。TiO 在 5 个反应循环中重复使用，活性无明显损失（<2%）。羟基自由基和溶解氧的定量分析可以从化学角度解释该过程。最后，发现 UV/Solar/TiO/HO 工艺的运行成本低于文献中描述的其他系统（0.67€/m）。
