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Production of 160 mg/L ozone water using circulating water electrolysis system
Electrochimica Acta ( IF 6.6 ) Pub Date : 2018-10-15 , DOI: 10.1016/j.electacta.2018.10.055
Fumio Okada , Keiji Nagashima , Takuya Kobayashi

A circulating water electrolysis system was developed to produce highly concentrated O3-dissolved water (ozone water). It enabled the production of 160 and 112 mg/L ozone water in batch and continuous-withdrawal operation, respectively. The ratios of the actual gas-phase O3 concentrations to those calculated from the dissolved O3 concentration using Henry's law at 1 atm were about 0.5, suggesting the supersaturation of ozone water. Once the O3 gas dissolved in the electrolysis cell operated at 0.15 MPa/G, it should have taken time for the ozone water to reach the gas-liquid equilibrium. The electric conductivity of the ozone water increased to 1.2 mS/cm and the formation of ClO2 was observed at the end of the run. The electrophoretic migration of Cl ions from the catholyte to the ozone water is considered to be the cause of this impurity. The time dependence of the dissolved O3 concentration and the maximum dissolved O3 concentration obtained in the experiment were well reproduced by a circulating water electrolysis simulator.



中文翻译:

使用循环水电解系统生产160 mg / L臭氧水

开发了循环水电解系统以产生高浓度的溶解于O 3的水(臭氧水)。它可以分批和连续抽取操作分别生产160和112 mg / L的臭氧水。实际气相O 3浓度与使用亨利定律在1个大气压下从溶解O 3浓度计算得出的比率约为0.5,表明臭氧水过饱和。一旦溶解在电解池中的O 3气体在0.15 MPa / G下运行,臭氧水达到气液平衡就需要花费一些时间。臭氧水的电导率增加到1.2 mS / cm,并形成ClO 2在运行结束时被观察到。Cl组成的电泳迁移-从阴极电解液的臭氧水的离子被认为是这种杂质的原因。通过循环水电解模拟器很好地再现了实验中获得的溶解O 3浓度和最大溶解O 3浓度的时间依赖性。

更新日期:2018-10-15
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