In this study, the photocatalytic degradation of p-nitrophenol (PNP) was investigated in a slurry impinging jet atomization reactor and TiO₂ nanoparticles have been applied as the photo-catalyst. Formation of the thin leaf-like liquid sheet with high mixing and turbulence intensity due to the collision of two jets, brings a perfect mass transfer. Moreover, the low thickness of the sheet will enhance photon transfer which is an integral factor in UV/TiO₂ processes. The impact of different parameters consisting of initial PNP concentration (30−70 mg/L), catalyst loading (0.2−0.8 gr/L) and Reynolds number (15000–31000) on the PNP conversion were investigated in the operating time of 180 min. Based on the results, the optimum experimental condition for the PNP initial concentration of 50 mg/L was 0.5 g/L catalyst loading and Reynolds number of 31,000 with the removal percentage of 55.78 % during 180 min that has been enhanced to 71.91 % by increasing the operation time to 360 min. DLS* analysis has also been conducted for investigation of TiO₂ loading effect on particles agglomeration. A pseudo-first-order kinetic model, which is the modified form of Langmuir-Hinshelwood kinetic model, was applied for prediction of p-nitrophenol photocatalytic degradation. A good compatibility between the predicted and experimental data has been observed.

在这项研究中，研究了在浆液撞击射流雾化反应器中对硝基苯酚（PNP）的光催化降解，并将TiO ₂纳米粒子用作光催化剂。由于两个喷嘴的碰撞，形成了具有高混合和湍流强度的薄叶状液体片，带来了完美的传质。此外，薄板的薄厚度将增强光子传递，这是UV / TiO _2中不可或缺的因素流程。在180分钟的工作时间内，研究了初始PNP浓度（30-70 mg / L），催化剂负载量（0.2-0.8 gr / L）和雷诺数（15000-31000）组成的不同参数对PNP转化的影响。 。根据结果​​，PNP初始浓度为50 mg / L的最佳实验条件是催化剂负载量为0.5 g / L，雷诺数为31,000，在180分钟内的去除率为55.78％，通过增加该比例提高到71.91％手术时间达到360分钟。还进行了DLS *分析，以研究TiO ₂负载量对颗粒团聚的影响。伪一级动力学模型是Langmuir-Hinshelwood动力学模型的改进形式，用于预测p-硝基苯酚光催化降解。已观察到预测数据与实验数据之间的良好兼容性。