(544gx) Kinetic Modelling of Simultaneous Photo-Catalytic Degradation of Phenolic Compounds and Reduction of Metal Ions with Nano-TiO2

Photocatalysis is a matured technology in terms of its lab scale demonstrations. Effect of various parameters on photocatalytic degradation of various target pollutants is well investigated. However, the major issue with this technology is the lack of generalized set of operating parameters capable of handling a wide range of target pollutants. The current research is highly focused on one specific target compound and optimizing the operating parameter for its degradation.

In order to take a step forward towards commercialization of this advanced oxidation water treatment technology, in-depth understanding of the process is of prime necessity. This can be carried out through mathematical modeling of the reaction kinetics yielding the universal set of parameters on which the fundamental degradation mechanism depends.

In the present work, the authors report the mathematical modeling of simultaneous photocatalytic degradation of phenolic compounds and heavy metal. The kinetic parameters were determined using comprehensive mathematical modeling involving set of ordinary differential equations and found to be in agreement with the reported literature values. The simulation was also able to predict concentrations of all the chemical species involved as a function of time. This approach enables experimentalists to broaden the scope of this study by generalizing reaction kinetics for photochemical reactions.