Ozonalysis for Water Reuse Applications

摘要

Both the rate constants for ozone self-decomposition in aqueous solution and Henry's law constants were determined as a function of pH and temperature. The ozone equilibrium concentration cannot be achieved when the rate of decomposition is significant relative to the rate of mass transfer of the ozone into the liquid. The solubility is calculated from experimental measurement of ozone uptake rate, ozone decomposition rate, and the steady ozone concentration. The ozone solubility in water varies with pH and temperature. The Henry's law constant was correlated with the temperature and hydrozide concentration using multilinear regression. These values are recommended for use rather than those of previous investigation who incorrectly assumed the experimentally determined steady state concentration was the equilibrium concentration.