Kinetic spectrophotometric method for real-time monitoring of ultraviolet photoreactions: A mini-photoreactor

The Influence of Photocatalytic Reactors Design and Operating Parameters on the Wastewater Organic Pollutants Removal—A Mini-Review

“…Using a higher potassium hexacyanoferrate concentration will induce a decrease of photocatalytic activity due to Fe precipitation on the TiO 2 . These results are in accordance with other papers [94,95] employing microreactors, which exhibit high photocatalytic activity and possess better process control. However, these technologies raise issues when upscaling for large applications, due to unpredictable changes in term of parameters evolution (flow regime, uniformity, photo distribution, etc.…”

“…An oscillatory [93] and a dynamic [94] reactor was employed for MB removal using ZnO photocatalyst. The oscillatory reactor has a volume of 0.1 L and works using a low intensity (4 W) UV light source.…”

In situ dynamic monitoring of the photodegradation process through differential absorption spectroscopy

“…To date, several in situ monitoring systems have been applied to study the process of dye photodegradation including surfaceenhanced Raman scattering, 32,33 dynamic fluorescence monitoring, 34 continuous flow chemiluminescence 35 and UV/vis absorbance detection in a batch reactor. 36,37 For surfaceenhanced Raman scattering, the intermediate products and the reaction process can be monitored. However, the response of this technique is highly dependent on an enhanced surface having intimate contact with the analyte.…”

Process analytical technology (PAT) as a versatile tool for real-time monitoring and kinetic evaluation of photocatalytic reactions

“…12 Further studies by Bukman et al revealed the degradation kinetics of textile dyes from a TiO 2 suspension. 28 In spite of the low detection limits, the applicability of UV/Vis spectroscopy is limited to UV/Vis active compounds. Furthermore, reasonable distinction between different species is often challenging.…”