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A practical method for gas changing time estimation using a simple gas-liquid mass transfer model.

Loredana Tarraran1, Fabio Bozzolo Lueckel2, Tonia Tommasi3

  • 1Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy..

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Summary
This summary is machine-generated.

This study presents a simple method to calculate gas changing time in anaerobic systems using gas-liquid transfer theory. The approach requires minimal measurements and a gas analyzer, saving time and resources for researchers.

Keywords:
Anaerobic fermentationGas changing timeOxygen purging

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Biotechnology

Background:

  • Anaerobic systems are crucial in various industrial and environmental processes.
  • Accurate determination of gas changing time is essential for process optimization and control.
  • Existing methods for gas changing time calculation can be complex and resource-intensive.

Purpose of the Study:

  • To develop a practical and simple method for calculating the gas changing time of anaerobic systems.
  • To validate the proposed method using experimental data.
  • To provide a guide for laboratory application.

Main Methods:

  • The method is based on the physics of gas-liquid transfer theory.
  • It requires minimal measurements of gas composition at the reactor outlet.
  • Calculations can be performed using standard spreadsheet software and a gas analyzer.

Main Results:

  • The model provides an approximate value of gas changing time with few measurements.
  • Experimental validation showed a model fit with less than 1% error for out-gas composition (excluding carbon dioxide).
  • The method significantly reduces the need for extensive analytical equipment and gas consumption.

Conclusions:

  • The developed method offers a practical, time-efficient, and resource-saving approach to determine gas changing time in anaerobic systems.
  • This technique enhances the understanding of gas-liquid transfer characteristics in these systems.
  • The method is suitable for laboratory applications and can be easily implemented by researchers.