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Membrane-less microfiltration using inertial microfluidics.

Majid Ebrahimi Warkiani1, Andy Kah Ping Tay2, Guofeng Guan3

  • 11] School of Mechanical and Manufacturing Engineering, Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia [2] BioSystems and Micromechanics (BioSyM) IRG, Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore.

Scientific Reports
|July 9, 2015
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Summary
This summary is machine-generated.

This study introduces a novel membrane-less microfiltration system using inertial microfluidics. This high-throughput, low-cost technology eliminates membrane clogging for efficient industrial cell separation.

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Area of Science:

  • Biotechnology and Biomedical Engineering
  • Microfluidics and Separation Science

Background:

  • Microfiltration is essential in biopharmaceutical manufacturing but plagued by membrane clogging.
  • Clogging limits efficiency and reliability, necessitating frequent membrane replacement.
  • Existing methods struggle with scalability and cost-effectiveness for large-volume processing.

Purpose of the Study:

  • To develop a membrane-less microfiltration system overcoming traditional limitations.
  • To achieve high-throughput, continuous cell separation for industrial applications.
  • To demonstrate efficacy for common bioreactor cell types like CHO and yeast.

Main Methods:

  • Massively parallelized inertial microfluidics to create a membrane-less system.
  • Engineered microfluidic devices for specific cell size ranges (CHO: 10-20 μm, yeast: 3-5 μm).
  • Achieved macroscopic volume processing rates of approximately 500 mL/min.

Main Results:

  • Successfully demonstrated filtration of Chinese Hamster Ovary (CHO) and yeast cells.
  • Achieved continuous, passive filtration without external force fields.
  • Eliminated the need for membrane replacement, reducing operational costs and downtime.

Conclusions:

  • The developed membrane-less microfiltration system offers a viable alternative to conventional membrane filters.
  • The platform provides high throughput, low cost, and scalability for diverse industrial microfiltration needs.
  • This technology has significant potential to enhance bioprocessing efficiency and reduce manufacturing expenses.