CO2 Removal & Storage with Microalgae
A natural process, enhanced by technology
We remove CO2 from the atmosphere by cultivating microalgae in wastewater and storing the biomass permanently underground. With the resulting carbon removal credits, organizations and companies can counterbalance unavoidable emissions.
Why remove CO2?
To address climate change, almost all countries have set themselves carbon-neutral goals.
Drastically reducing CO2 emissions has priority, but it is not enough. Carbon Dioxide Removal (CDR) is a crucial factor to reach net zero emissions.
Nature-based technology
We remove CO2 from the atmosphere by producing biomass with microalgae.
The carbon bound by the microalgae is permanently stored underground. Our technology therefore leads to negative emissions.
CO2 Removal Certificates (CORCs)
Our carbon certificates are generated through the measurable removal of CO2.
CORCs are not a substitute for reducing emissions! Rather, they complement the climate strategy by addressing emissions that are difficult to avoid.
High-Quality Carbon Removal Credits
MEASURABLE
We weigh the biomass and measure its carbon content before we bury it. This allows us to determine exactly how much CO2 has been removed.
PERMANENT
The long-term storage of the sequestered carbon is reliable & safe. The biomass remains stable for over 1000 years, due to its composition and storage conditions.
ENERGY-EFFICIENT
Our process is based on photosynthesis. That's why we use almost exclusively sunlight as an energy source. The technical energy requirement is correspondingly low.
ADDITIONAL & VERIFIABLE
Our process verifiably removes CO2. We emphasize high standards for monitoring, reporting, and verification (MRV) to ensure transparency and verifiability.
RESOURCE-EFFICIENT
Microalgae thrive in wastewater, using its nutrients while efficiently purifying the water. This enables a resource-efficient process with circular characteristics.
SCALABLE
Our technology has significant scaling potential because it fully integrates biomass production, enabling us to expand without depending on external feedstock.
Why Microalgae?
Through photosynthesis, microalgae turn sunlight and CO2 into biomass, playing a crucial role in the global carbon cycle. They grow 10 to 50 times faster than land plants, making them highly efficient CO2 sinks.
Remove Carbon. Clean Water.
By connecting our photobioreactors to wastewater streams, we take this natural process one step further. The microalgae grow in the wastewater, which provides them with the nutrients they need. This reduces the demand for freshwater and avoids synthetic fertilizers. As the microalgae absorb these nutrients, they clean the water while capturing CO2 as solid biomass – tackling two of the most urgent environmental challenges in a single process.
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Our Partners
Arrhenius AG is a spin-off of Lucerne University of Applied Sciences and Arts. We are supported by several scientific partners and funding organizations.
7
Million tons of CO2
Emissions that Switzerland alone has to remove every year by 2050 (Swiss Federal Office of Energy).
