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Performance evaluation of ultrasonic transducer in a mist bioreactor by different nutrient media
Biotechnology Letters ( IF 2.7 ) Pub Date : 2021-08-13 , DOI: 10.1007/s10529-021-03168-0
Ali Fadavi 1 , Omid Gholami Banadkoki 2 , Ali Mansouri 1
Affiliation  

The mist bioreactor has been proved to have a higher performance relative to the liquid phase reactor. The water and conventional media (MS, ½MS, and B5) were tested in a mist bioreactor to evaluate the performance of the misting system. The physicochemical properties of liquids were measured at 0 (Fresh state) and when treated by ultrasonic system for 1 and 2 h. At a given airflow rate, the misting rate for different heights of various media was determined. The results demonstrated that the electrical conductivity of all media increased with the duration of sonication. The ultrasonic effect caused an increase in surface tension of MS and ½MS, while the pH of MS and ½MS reduced with ultrasonic treatment. The inverse trends were observed for water and B5 for these properties. The misting rate increased by increasing liquid height to a maximum value, then decreased to a minimum value at the highest height. For all liquids studied in this experiment, this maximum value of misting performed at height ranged between 3 and 4 cm. The maximum and minimum values of the ultrasonic misting rate belonged to MS (\(2.78\times {10}^{-2} g/s\)) at height 3 cm and B5 (\(0.52\times {10}^{-2}g/s\)) at height 1 cm, respectively.



中文翻译:

不同营养介质雾化生物反应器超声换能器性能评价

相对于液相反应器,雾状生物反应器已被证明具有更高的性能。水和传统介质(MS、½MS 和 B5)在雾化生物反应器中进行测试,以评估雾化系统的性能。液体的理化性质是在 0(新鲜状态)和超声波系统处理 1 小时和 2 小时时测量的。在给定的气流速率下,确定了各种介质不同高度的雾化速率。结果表明,所有介质的电导率都随着超声处理的持续时间而增加。超声波效应导致 MS 和 ½MS 的表面张力增加,而 MS 和 ½MS 的 pH 值随着超声波处理而降低。对于这些特性,观察到水和 B5 的相反趋势。通过将液体高度增加到最大值来增加雾化率,然后在最高高度下降到最小值。对于本实验中研究的所有液体,雾化的最大值在 3 到 4 厘米的高度范围内进行。超声雾化率的最大值和最小值属于 MS (\(2.78\times {10}^{-2} g/s\) ) 高度 3 cm 和 B5 ( \(0.52\times {10}^{-2}g/s\) ) 高度 1 cm,分别。

更新日期:2021-08-19
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