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相关概念视频

Bioreactor Controls-II01:18

Bioreactor Controls-II

In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...

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声学上升的微气泡用于高效的液体操作.

Chenhao Bai1, Zhuo Chen1, Yunsheng Li1

  • 1School of Mechatronics Engineering and Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, Beijing Institute of Technology, Beijing 100081, China.

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概括
此摘要是机器生成的。

研究人员开发了声学上升的微气泡,以高效地操纵液体. 这种方法提高了高粘度流体中的质量转移,为各种化学和生物医学应用提供了可扩展的解决方案.

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科学领域:

  • 化学工程是化学工程的重要组成部分.
  • 生物物理学的生物物理.
  • 材料科学 材料科学 材料科学

背景情况:

  • 有效的液体操纵在科学学科中至关重要.
  • 传统的基于泡的方法与可扩展性和高粘度流体作斗争.
  • 起的气泡通过水力动力学行为增强混合和质量转移.

研究的目的:

  • 引入一种新的策略,使用低能级的声学激发来激发上升的微气泡.
  • 在宏观和微观领域实现可扩展和高效的质量转移.
  • 在具有挑战性的环境中克服传统基于泡的方法的局限性.

主要方法:

  • 在上升的微气泡上使用低能量的声学激发.
  • 结合浮力驱动的对流与局部声学微流.
  • 使用粒子图像速度计和计算流体动力学进行分析.

主要成果:

  • 声学上升的微气泡扩大了操作工作空间,并加剧了当地的质量转移.
  • 浮力诱导的流量和声学微流的明显贡献是特征.
  • 在高粘度混合,材料合成和细胞操纵中证明有效.

结论:

  • 声学上升的气泡提供了一种可扩展和高效的质量转移方法.
  • 该技术显示了实验室和工业液体操纵的巨大潜力.
  • 这种方法可以在具有挑战性的高粘度液体环境中提高性能.