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Swiss startup opens plant that permanently stores CO2 in waste concrete


Neustark, a spin-off from Switzerland’s ETH Zurich university, has inaugurated its first commercial-scale carbon capture plant in the EU, located at a construction waste recycling facility on the outskirts of Berlin.  The plant, built in partnership with building and recycling company Heim, has the capacity to permanently store over 1,000 tons of CO₂ per year by injecting the gas into granules of demolition concrete. The CO₂, which is captured at nearby biogas plants and would otherwise have entered the atmosphere, binds with the concrete through a process called mineralisation. This chemical reaction turns the CO₂ into limestone, binding it to…

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