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Mass transfer of dissolved oxygen using rotating cylinder electrode under bulk boiling conditions

机译:在本体沸腾条件下使用旋转圆柱电极进行溶解氧的传质

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The mass transfer behavior of oxygen and ferricyanide in dilute aqueous solutions was investigated using a rotating cylinder electrode under bulk boiling condition. A correlation was developed for predicting the mass transfer behavior using the reaction of dissolved oxygen below boiling condition. This correlation was used to predict the mass transfer behavior for ferricyanide reaction from room temperature to just below boiling point (i.e. 99 ℃) for the rotating speeds between 100 and 3300 rpm. These results indicated that the ferricyanide reaction could be used as a model to predict the electrochemical behavior of dissolved oxygen at the elevated electrolyte temperatures. However, the correlation could not predict the experimental data obtained under boiling conditions very well. The experimentally determined mass transfer coefficients under boiling condition were on the average 38% higher than those obtained just below boiling point due to the generation and rupture of boiling bubbles in bulk solution.
机译:在本体沸腾条件下,使用旋转圆柱电极研究了氧气和三价铁在稀水溶液中的传质行为。利用沸腾条件下的溶解氧反应,可以预测传质行为。这种相关性用于预测铁氰化物反应从室温到沸点(即99℃)至100和3300 rpm之间的转速时的传质行为。这些结果表明铁氰化物反应可以用作预测在升高的电解质温度下溶解氧的电化学行为的模型。但是,相关性不能很好地预测沸腾条件下获得的实验数据。由于在本体溶液中沸腾气泡的产生和破裂,在沸腾条件下实验确定的传质系数平均比刚好在沸点以下获得的传质系数平均高38%。

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