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Feedstock: Dairy Biogas
Dairy digesters produce CO₂ that is currently wasted. We capture it and turn it into beverage-grade product.
The US dairy industry has become one of the fastest-growing sources of renewable natural gas. Large dairy operations use anaerobic digesters to convert manure into biogas, which is then upgraded to pipeline-quality methane. During that upgrading process, the CO₂ in the biogas — roughly 35-45% of the total gas stream — is separated out and vented.
That vented CO₂ represents both a wasted resource and an environmental impact. CleanCycleCarbon captures this CO₂ on-site and purifies it to FDA-registered, beverage-grade quality using a proprietary cryogenic process.
The dairy-to-RNG market is projected to continue growing as state and federal incentives drive investment. Each new dairy RNG project creates a new CO₂ capture opportunity. CleanCycleCarbon is building the infrastructure to capture that CO₂ at scale.
Dairy operations produce manure every day. Unlike seasonal ethanol plants, dairy digesters run continuously, providing a reliable and predictable CO₂ feedstock.
Dairy RNG projects are expanding rapidly driven by LCFS credits, RINs, and voluntary carbon markets. Each new project is a potential CO₂ capture site.
CO₂ from dairy biogas is biogenic, not fossil-derived. This matters for carbon accounting, ESG reporting, and regulatory programs that differentiate by source.
Dairy operations exist across the US — California, Wisconsin, Idaho, Texas, New York, and beyond. This distribution helps build a geographically diverse CO₂ supply network.
Dairy biogas contains contaminants that make CO₂ purification more challenging than other feedstocks: hydrogen sulfide (H₂S), siloxanes, volatile organic compounds, and high moisture content. These must be completely removed to meet beverage-grade specifications.
CleanCycleCarbon's cryogenic purification process handles these contaminants through a multi-stage approach that first conditions the raw gas and then uses low-temperature separation to produce a final product at 99.9% purity or higher. The process is proven — our Lewiston, NC facility has been producing beverage-grade CO₂ at commercial scale from similar industrial emissions.
A typical dairy digester generates a gas stream that is 35-45% CO₂. For large operations, this can represent thousands of tons of CO₂ per year that is currently vented during biogas upgrading.
Yes. CO₂ from dairy biogas originates from biological processes, not fossil fuel combustion. This distinction matters for carbon accounting, emissions reporting, and regulatory programs like California's LCFS.
Yes. Our cryogenic process removes H₂S, siloxanes, moisture, and other contaminants to produce CO₂ at 99.9% purity meeting FDA and ISBT specifications.
No. CleanCycleCarbon handles all capital investment, construction, and operations. The dairy or RNG operator provides access to the gas stream.
Let's explore how CO₂ capture can add a revenue stream to your dairy biogas operation.