A preliminary kinetics model predicting concentration variations of hypobromous acid and bromate in ozonated marine water

Abstract A preliminary chemical kinetics model is presented for simulating the temporal variations of the hypobromous acid and bromate forms in saline waters under the influence of ozone (O 3 ). The model uses the basic principle of ‘mass balance’ and considers the chemical reactions in terms of forward and backward reaction rates and simulates the concentration variations of the consumed and generated chemical species in saline water. The reaction rate constants are modeled to include the effect of temperature only, since pH can be constant in a typical marine environment. Theoreticall estimated values for unknown rate constants have been used to refine the model. The model incorporates the most important bromine species reactions that are known to occur when ozone is introduced into marine water. Simulation results indicate that the bromine derivatives in ozonated marine water are less stable than similar chlorine species in chlorinated marine waters. Elevated concentrations of hypobromous acid and bromate are formed in ozone-treated marine waters.