Blog icon

Dark fermentation and photofermentation processes occur sequentially in a series of reactors.


Technology

What is it?

Dark fermentation and photofermentation processes occur sequentially in a series of reactors.

Why is it important?

Hybrid fermentation allows extraction of additional hydrogen from the effluents of the typical dark fermentation process.

Characteristics

  • Inputs: Organic matter (biomass), water, light for photo-fermentation step
  • By-products: Carbon dioxide
  • Operating temperature: Ambient

Benefits

  • Maximises hydrogen yield from source material
  • Makes use of untreated dark-fermentation effluents (which would otherwise require further handling or present an environmental hazard)
  • Biocatalysts are inexpensive and biodegradable
  • Could use organic waste as substrate

Limitations

  • Large surface area required for photo-fermentation
  • Operation variability depending on solar irradiation supply for the photofermentation step

RD&D priorities

  • Improve substrate conversion efficiency
  • Improve reactor design

Known active organisations

  • No institutions found in study

Other opportunities like this

  • Electrical energy produced by microbes via breakdown of organic matter are augmented with a small additional current to facilitate proton reduction forming hydrogen gas.

  • Microorganisms such as green algae and blue-green algae (cyanobacteria) split water into hydrogen and oxygen via direct or indirect bio-photolysis.

  • In the absence of light, microorganisms such as bacteria break down organic matter to produce hydrogen gas through dark fermentation. Bacteria can be engineered in order to increase metabolic activity for a higher hydrogen production rate.

Contact us

Find out how we can help you and your business. Get in touch using the form below and our experts will get in contact soon!

CSIRO will handle your personal information in accordance with the Privacy Act 1988 (Cth) and our Privacy Policy.


First name must be filled in

Surname must be filled in

I am representing *

Please choose an option

Please provide a subject for the enquriy

0 / 100

We'll need to know what you want to contact us about so we can give you an answer

0 / 1900

You shouldn't be able to see this field. Please try again and leave the field blank.