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Bioreactor Design and Operational System

Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
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Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...

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Ultrasonic reactor set-ups and applications: A review.

Panayiota Adamou1, Eleana Harkou1, Alberto Villa2

  • 1Department of Chemical Engineering Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, 3036 Limassol, Cyprus.

Ultrasonics Sonochemistry
|May 29, 2024
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Summary

Sonochemistry, utilizing ultrasound waves, offers green chemistry solutions with improved reaction efficiency. This review details reactor designs and optimization strategies for broader industrial applications.

Keywords:
ApplicationsChallengesMicrostructured sonoreactorsOperational parametersPerspectivesSonochemistry

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Area of Science:

  • Green Chemistry
  • Chemical Engineering
  • Physical Chemistry

Background:

  • Sonochemistry leverages ultrasound for environmentally friendly chemical reactions, reducing hazardous solvent use.
  • Reactor design is crucial for implementing sonochemical processes effectively.
  • Challenges remain in scaling up sonochemical applications for industrial use.

Purpose of the Study:

  • To review various sonochemical reactor designs and their characteristics.
  • To discuss the optimization of operating parameters for enhanced reaction yields.
  • To highlight the diverse applications and future challenges of sonochemistry.

Main Methods:

  • Detailed discussion of ultrasonic batch and continuous flow reactor designs.
  • Analysis of microstructured sonoreactors for heat and mass transfer.
  • Exploration of parameter optimization, including temperature, frequency, intensity, and time.

Main Results:

  • Ultrasonic batch systems offer low cost and good mixing but face scalability issues.
  • Continuous flow reactors show potential for enhanced yields but require design improvements.
  • Microreactors improve transfer phenomena but are prone to clogging.

Conclusions:

  • Optimizing operating parameters and selecting appropriate reactor systems are key for specific applications.
  • Sonochemistry has broad applications in biochemical, petrochemical, materials synthesis, and wastewater treatment.
  • Overcoming scalability challenges and developing computational tools are essential for commercializing sonochemistry.