Photocatalytic degradation of ammonia and butyric acid in plug-flow reactor: Degradation kinetic modeling with contribution of mass transfer

Photocatalysis of Sub-ppm-level Isopropyl Alcohol by Plug-flow Reactor Coated with Nonmetal Elements Irradiated with Visible Light

“…However, this pattern is a contrast to that determined in the current study. At higher AFRs the gas retention time in the photocatalytic reactor would be too short to provide sufficient IPA transfer from the gas phase to the solid catalyst surface [26,27]. The gas retention times in the current study were 72, efficiency is proportional to light intensity [30,31].…”

“…Moreover, as AFR was increased, the bulk mass transport of target compounds from the gas-phase to the surface of the catalyst particle, which is an important heterogeneous catalytic reaction process, would be increased mainly due to convection and diffusion [26]. As such, the decomposition rate would increase as AFR was increased, indicating that IPA decomposition is limited to mass transfer to the surface of photocatalysts.…”

Deodorization of food-related nuisances from a refrigerator: The feasibility test of photocatalytic system

“…Nitrogenous compounds (NH 3 and TMA), identified as the major odorants in this study, are likely to be photocatalytically oxidized to N 2 , CO 2 , and H 2 O. In these photocatalytic mechanisms, and NO 3 -can be detected as the by-products of NH 3 decomposition on the catalyst surface [37,38]. Methanol, acetone, NO, and NO 2 were also reported to be intermediates of TMA during photodegradation [39].…”

Glass foams for environmental applications

“…For better comparison, we calculate the apparent rate of degradation, taking into account the total amount of titanium dioxide for each support. Using the Langmuir-Hinshelwood model, described in details elsewhere [25][26][27], and applying it to the results obtained for different initial concentration of toluene (mg m − 3 ) and different TiO 2 catalyst concentration (g m − 2 ), we determined the apparent rate of toluene degradation, k 2 , expressed in mg m − 3 min − 1 g − 1 . For commercial support, the quantity of titanium dioxide was 1.2 g (480 cm 2 × 25.5 g m − 2 ).…”

“…In recent years, photocatalysis has proved to be a good technique for eliminating many water pollutants [24][25][26][27] or air, such as volatile organic compounds (VOCs) [22]. These compounds may be emitted by human activities (transport, industry) but are also present in many products and materials within our homes.…”