Simple smoke and soot scrubber

Project summary

Indoor air pollution due to soot from open fires and simple stoves has a massive impact on global health for adults and more than 50% of premature deaths due to pneumonia for children under 5.

A simple and common method of scrubbing fine particulates from gas streams is to bubble the stream through water long enough for the particles to diffuse to the gas-liquid interface. Removal of soot could potentially be accentuated by simple liquid scrubbers that exploit the unique rheological properties of yield stress fluids. Yield stress fluids only flow above a certain threshold stress, so bubbles would be trapped as long as needed, providing more control and better trapping of the particles.

Project objectives

  • Study the performance of aqueous scrubbing technology for a range of soot particle sizes and properties
  • Design a simple setup to remove soot using sparse yield stress networks in water
  • Test, characterise, and optimise the setup by experimental study of performance and robustness