| 【Objective】The solubility of ozone in water is low, extremely unstable and easy to decompose. Its
life span is very short and the half-life is only about 20-30 min. The dissolution characteristics of ozone in acetic acid
solution were investigated in order to improve the solubility and stability of ozone in water.【Method】A small amount of
acetic acid was added to the water, and the solubility of ozone in acetic acid water was indirectly obtained by measuring
the concentration of ozone in acetic acid water with iodometric method. By adopting controlling variable method, the single
variable was changed to explore the influence of the concentration of acetic acid, the temperature, the water quality of acetic
acid solution, the standing time after entering ozone, and the time of entering ozone gas on the solubility of ozone in acetic
acid water, and the best condition for the highest solubility of ozone in acetic acid water were analyzed.【Result】When the
concentration of acetic acid was 0.6 mol/L, the temperature was below 5 ℃ , and ozone treatment was kept for about 60 min,
the highest ozone solubility of 2.37 mg/L was obtained. The test result also showed that the higher ozone solubility could be
obtained when the water quality was purer.【Conclusion】The solubility and stability of ozone can be cmproved by adding a
small amount of acetic acid to water. |
