In-situ methane enrichment
Last changed: 05 November 2021
In-situ methane enrichment is a method to upgrade biogas that has the potential to become more cost effective than existing, commercially available, technologies. The principle is that sludge from the digestion chamber is circulated through a desorption colon and back again. The desorption of carbon dioxide is accomplished by letting the air bubble through the column. The process utilizes that carbon dioxide is easier to solve in water compared to methane.
The technology is developing through a number of projects:
- Processintern metananrikning vid gödselrötning – försök i pilotskala
- In-situ methane enrichment of raw biogas in the anaerobic digestion process
- Selective desorption of carbon dioxide from sewage sludge for in-situ methane enrichment: Enrichment experiments in pilot scale
- In-situ methane enrichment in anaerobic digestion of sewage sludge – stage 2
- In-situ methane enrichment in anaerobic digestion of sewage sludge
Contact Åke Nordberg, ake.nordberg@slu.se