Cold Jet enables RNG sites to profit from captured CO₂

Cold Jet, a global supplier of dry ice production equipment, has introduced a new model for renewable natural gas (RNG) and biomethane plants to monetise captured carbon dioxide.
By integrating carbon capture and liquefaction systems with on-site dry ice production, operators can convert a by-product of the biomethane upgrading process into a commercially valuable material.
RNG production from organic waste generates methane alongside significant volumes of CO₂, which is often vented.
Cold Jet proposes capturing this CO₂ for conversion into liquid CO₂ or solid dry ice - both of which serve established industrial markets.
Demand for CO₂ is rising across sectors including food and beverage, pharmaceuticals, agriculture and industrial cleaning.
Dry ice, in particular, offers a more profitable end product in many applications, with higher market value compared to bulk liquid CO₂, said the company.
Diego Loaiza, Director of Global Dry Ice Applications at Cold Jet, said: “We’re seeing growing interest from biomethane operators looking to improve site economics. In many cases, dry ice can generate up to three to four times the revenue of liquid CO₂, depending on the market.”
Cold Jet’s system is designed as a modular unit that can be added to existing RNG or CO₂ recovery facilities.
Housed in a containerised format, the Dry Ice Production Hub requires minimal infrastructure and offers low energy consumption per unit of output.
The company states that the system is suitable for facilities looking to diversify revenue, reduce emissions and enter established supply chains in dry ice markets.
Dry ice is used across cold chain logistics, food processing, life sciences and for cleaning and surface preparation through dry ice blasting.
There is also a consistent shortfall of CO₂ availability in some regions, increasing interest in localised production.
Cold Jet, which has a large global installed base of equipment, also provides support in identifying off-take opportunities for both liquid CO₂ and dry ice.
The company says it can assist RNG plant operators in assessing local demand and establishing commercial partnerships.
The approach represents an additional income stream for biogas plant owners while supporting decarbonisation goals by capturing and utilising CO₂ that would otherwise be emitted.