文章摘要
詹琪琪 1 ,阎  杰 2,周国豪 2.臭氧在醋酸溶液中溶解及稳定性研究[J].广东农业科学,2019,46(4):124-129
臭氧在醋酸溶液中溶解及稳定性研究
Study on Dissolution and Stability of Ozone in Acetic Acid Solution
  
DOI:10.16768/j.issn.1004-874X.2019.04.018
中文关键词: 臭氧  醋酸溶液  浓度  溶解度  稳定性
英文关键词: ozone  acetic acid solution  concentration  solubility  stability
基金项目:广州市科技计划项目(201604020074);广东省科技计划项目(2015B020215012)
作者单位
詹琪琪 1 ,阎  杰 2,周国豪 2 1. 仲恺农业工程学院轻工食品学院广东 广州 510225 2. 仲恺农业工程学院化学化工学院广东 广州 510225 
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中文摘要:
      【目的】臭氧在水中的溶解度很小,极不稳定,易分解,且寿命很短,其半衰期仅 20~30 min。考 察臭氧在醋酸溶液中的溶解特性,以提高臭氧的溶解度与稳定性。【方法】在水中加入少量醋酸,采用碘量法 测定醋酸溶液中臭氧的浓度,间接得出臭氧在醋酸溶液中的溶解度;通过控制变量法,改变单一变量,探索醋 酸浓度、温度、配制醋酸溶液的水质、通入臭氧后的放置时间、通入臭氧气体的时间等因素对臭氧在醋酸溶液 中的溶解度的影响,探讨臭氧在醋酸溶液中溶解度最高的最佳条件。【结果】当醋酸浓度为 0.6 mol/L、温度低于 5℃、 通入臭氧处理 60 min 左右,臭氧溶解度最高,达 2.37 mg/L。试验还显示,水质越纯时,臭氧溶解度越大。【结论】 在水中添加少量醋酸能够提高臭氧在水中的溶解度与稳定性。
英文摘要:
      【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.
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