Aromatic hydrocarbons are rated amongst the most important classes of compounds with regard to the formation of photo-oxidants in the lower atmosphere. A recent theoretical study [1] using a trajectory model approach estimated the aromatic hydrocarbons to be responsible for about 40 % of the anthropogenic ozone formation in north-western Europe, their contribution to the total nonmethane hydroc...

An inexpensive photoreactor using LED light sources and a fibre-optic CCD spectrophotometer as a detector was built by designing a special cell holder for standard 1.000 cm cuvettes. The use of this device was demonstrated by studying the aqueous photochemical reaction of 2,5-dichloro-1,4-benzoquinone. The developed method combines the highly quantitative data collection of CCD spectrophotomete...

A mathematical model describing fluid flow and concentration dynamics of microorganisms inside a UV photoreactor is developed. Using physical arguments and techniques from system theory, we approximate this model by a first order linear one. For this reduced model, we design a controller. The controller is tested on the original model as well as on the reduced model by numerical simulation. Thi...

In the current research, productivity of CO2 photoreduction has been boosted by performing reaction in an innovative photocatalytic reactor, which allows for operation up to 20 bar. A set photocatalysts were used, including three types pristine TiO2, i.e., one commercially prepared (Evonik P25), home-prepared flame spray pyrolysis (FSP), and obtained hydrolysis TiCl4 (TiO2exCl), a bare thermo-e...

Photocatalytic reactor models incorporating radiation transport parameters and intrinsic kinetic of photocatalytic decomposition single-compound mixtures oxalic (OA) formic acid (FA), in both slurry suspensions immobilized thin films, were validated two well-mixed annular photoreactors geometries irradiated with either UVA or UVC radiation. The six-flux absorption scattering model (SFM) predict...