Does the RNG facility need to invest capital for CO₂ capture?

No. CleanCycleCarbon develops, builds, and operates the CO₂ capture system on-site. The host facility provides access to the CO₂-rich tail gas stream. No capital investment is required from the RNG operator.

What types of RNG facilities are compatible?

CleanCycleCarbon's technology works with RNG facilities processing biogas from dairy manure, food waste, landfill gas, wastewater treatment, and other organic waste sources. The system is feedstock agnostic and adapts to different biogas compositions.

CO₂ capture facility at RNG upgrading site

Feedstock: Renewable Natural Gas

CO₂ Capture from RNG Facilities

Turn vented tail gas into beverage-grade CO₂. No capital required from the host facility.

The RNG CO₂ Opportunity

Renewable natural gas facilities upgrade raw biogas into pipeline-quality methane. The upgrading process separates CO₂ from methane — and that CO₂, typically 30-50% of the raw biogas stream, is almost always vented directly to the atmosphere.

That vented CO₂ is an untapped resource. CleanCycleCarbon captures it on-site and purifies it to FDA-registered, beverage-grade quality using a proprietary cryogenic process. The result is a new revenue stream from what was previously a waste product, and a new source of domestic CO₂ for the commercial market.

With hundreds of RNG facilities operating or under development across the US — driven by the Renewable Fuel Standard, state Low Carbon Fuel Standards, and growing corporate sustainability commitments — the addressable CO₂ volume is substantial.

How CO₂ Capture Works at an RNG Facility

Biogas Upgrading

The RNG facility separates methane from CO₂ during upgrading. The CO₂-rich tail gas is typically vented.

CO₂ Capture

CleanCycleCarbon's system intercepts the tail gas stream before it reaches the vent stack.

Cryogenic Purification

The captured CO₂ is purified through our proprietary cryogenic process to remove contaminants and reach beverage-grade purity.

Commercial Supply

Purified CO₂ enters the commercial supply chain through distribution partners and reaches food, beverage, and industrial buyers.

Benefits for RNG Facility Operators

No capital required: CleanCycleCarbon develops, builds, and operates the capture system. The RNG facility provides access to the CO₂ stream. That's it.

New revenue from waste: CO₂ that was being vented becomes a commercial product. The facility can participate in the economics of a new product stream without operational complexity.

Reduced emissions profile: Capturing CO₂ instead of venting it improves the facility's environmental footprint and can support carbon intensity scoring under programs like LCFS.

Minimal operational impact: CleanCycleCarbon handles all aspects of the capture system: engineering, permitting, construction, commissioning, and ongoing operations.

Compatible RNG Feedstock Types

CleanCycleCarbon's technology is feedstock agnostic. We capture and purify CO₂ from RNG facilities processing:

Dairy manure digesters

Food waste digesters

Landfill gas-to-RNG

Wastewater treatment biogas

Swine waste digesters

Agricultural waste digesters

Frequently Asked Questions

What happens to CO₂ during RNG upgrading?

When raw biogas is upgraded to pipeline-quality methane, the CO₂ component — typically 30-50% of the raw gas — is separated and usually vented. CleanCycleCarbon captures this CO₂ and purifies it to beverage-grade quality.

Can CO₂ from RNG facilities meet beverage grade standards?

Yes. Our proprietary cryogenic purification process removes contaminants from RNG-sourced CO₂ and produces a product that meets FDA food-grade registration and ISBT beverage-grade specifications at 99.9% purity or higher.

Does the RNG facility need to invest capital?

No. CleanCycleCarbon develops, builds, and operates the CO₂ capture system on-site. The host facility provides access to the tail gas stream. No capital investment is required.

Operate an RNG Facility?

Let's discuss how CO₂ capture can add value to your operation — with no capital required.

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