Problem: Landfills and sewage plants produce methane, which is a greenhouse gas and contributor to climate change. At the same time, the world’s demand for food, especially those high in protein, is soaring.
- Two companies – Calysta Inc. (CA, USA) and String Bio (India) have independently discovered processes for converting landfill biogas to protein.
- Methanotrophic soil bacteria ferments the methane to protein in a water-based solution, which can be dried into an edible powder.
- The protein is currently added to animal feed, whilst human consumption trials are planned pending further purification.
- The product can be used as a fish-meal replacement, which is currently sourced from wild commercially-caught fish, the populations of which are under immense pressure from over-fishing.
- StringBio aims to commercialize these systems to a domestic level for community waste-to-protein initiatives.
Bloomberg Technology: Landfill Gas for Dinner? Scientists to Cook Food From Waste (September 26, 2017)
Stakeholders interested in this technology:
- Landfill / biogas plants / any other methane producing industrial processes
- Plant operators
- Waste management
- Animal feed agribusinesses and high-protein food retailers
- Investment team
- Procurement and supply chain
Steps for deployment:
- Measure methane levels at production facility for feasibility
- Install methane-capture technology
- Send to relevant conversion company (ie. Calysta Inc.) for processing