Let’s make carbon-negative hydrogen AND cement

CARBONAIR is the first carbon-negative cement – made from the carbon of hydrogen production from (renewable) natural gas.

Whiterock.industries Carbonair logo

CARBONAIR cement and hydrogen

Natural gas is far too valuable to simply burn. Let’s make hydrogen out of it. And at the same time CARBONAIR cement – for carbon-negative building materials, green buildings and green cities. Our CARBONAIR technology is linked to the hydrogen production via methane pyrolysis. Both technologies are characterised by the fact that they do not release any CO2 into the atmosphere. The Methane Pyrolysis and CARBONAIR cement technology work with both natural gas and renewable natural gas (RNG). If natural gas is used, carbon-neutral hydrogen AND carbon-neutral cement are created (scope 1). If RNG is used, the hydrogen and the CARBONAIR cement are even carbon-negative. This is very positive for our climate. Things change and so do our buildings.

  • 100 % carbon-negative cement: Carbon black from RNG pyrolysis. All other components are carbon-negative.

  • 0 % mineral cement
  • up to 3 Gt/y production potential in the cement and building materials markets
Whiterock.industries Carbonair flowchart
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Let’s make renewable natural gas from waste

HYDROGENATE is a technology to convert any kind of waste into Renewable Natural Gas (RNG). A combined hydrogenation SOEC reactor with high efficiency.

Whiterock.industries Hydrogenate logo

HYDROGENATE: Integrated hydrogenation / electrolysis solution

We have developed a reactor that combines the hydrogenation of biomass and waste to Renewable Natural Gas (RNG) with the provision of the necessary hydrogen via electrolysis. The integration is achieved by Solid Oxide Electrolysis Cells (SOEC) under uniform pressure and temperature conditions. The hydrogen is generated inline directly in the reactor so that no intermediate storage is required. The combination of exothermic hydrogenation with endothermic electrolysis is expected to achieve unprecedented efficiencies.

HYDROGENATE allows the recovery of nutrients contained in the waste, such as phosphorus, and the decomposition or separation of pollutants. The objective is to treat all kinds of waste with HYDROGENATE, such as industrial and municipal waste, sewage sludge, plastics, or used tires. Whether contaminated or not.

  • Renewable Natural Gas (RNG) of high purity, low residues or by-products, no CO2
  • < 50 % of the cost of state-of-the-art technology (methanation) expected

  • 10,000 to >200,000 tons/year waste/biomass treatment plants with modular units

  • Every kind of waste: municipal, industrial, oil & gas, sewage sludge, plastics, biomass, contaminated or not – HYDROGENATE = hydrogenate everything

  • up to 2 Gt/y production potential from waste and biomass residues
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Let’s remove CO2 from the atmosphere

The combination of HYDROGENATE and CARBONAIR makes a contribution to decarbonizing industry and reversing climate change – by removing large amounts of CO2 from the atmosphere.

Our solution for large scale carbon removal from the atmosphere

Climate scientists propose removing CO2 from the atmosphere on a gigaton scale to counteract runaway climate change. Our answer is to convert waste to Renewable Natural Gas (RNG) – instead of incinerating or dumping it. RNG is already a platform raw material for many industrial applications. Our HYDROGENATE technology is a universal enabler for this conversion. 3 gigatons of waste are produced by the world per year and a similar amount of CO2 would be prevented from re-emitting into the atmosphere if treated with hydrogenation. Since most waste is organic, hydrogenation creates a carbon-negative feedstock: RNG. CARBONAIR uses this RNG to produce carbon-negative cement for green buildings and cities. CARBONAIR cement thus opens the 3-5 gigatons per year building materials market for carbon removal.

The combination of both technologies thus enables the removal of carbon from the atmosphere and its storage as long-lasting building materials – theoretically with a potential of up to 3 gigatons per year. By recycling the CARBONAIR products using HYDROGENATE technology, unlimited carbon removal from the atmosphere is made possible.

Whiterock.industries Hydrogenate - Carbonair flowchart of the overall process


CARBONAIR and HYDROGENATE are technologies of Whiterock AG. Our business unit Whiterock.industries continues to develop the technologies for large-scale use – together with leading R&D institutions such as the Engler-Bunte-Institute of the Karlsruhe Institute of Technology (KIT) or Fraunhofer LBF.

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