immo!nvest – Die Plattform für Standorte und Immobilien

Tag: CO₂-Speicherung

  • New technology permanently stores CO₂ in recycled concrete

    New technology permanently stores CO₂ in recycled concrete

    Neustark and the joint venture RECULAR of the Oettinger Group and peterbeton are joining forces for the permanent storage of CO2 in recycled concrete. RECULAR, based in Baden-Baden, has tested Neustark’s technology for binding CO2 in granulate from demolition concrete in a pilot plant in the Karlsruhe region over the past few months, Neustark announced in a press release. On 26 February, the partners presented the technology and the initial results from the pilot plant at an event.

    The pilot project forms the basis for further collaboration between Neustark, the Oettinger Group and peterbeton. “We can store an average of 10 kilograms of CO2 per tonne of demolition material, making it a CO2 sink,” Thomas Karcher, Managing Director of peterbeton, is quoted as saying in the press release. His company is responsible for processing and distributing the CO2-enriched recycled concrete in the project. The Oettinger Group is responsible for procuring and processing the demolition concrete.

    “We are delighted to be working with our partners Oettinger and peterbeton to open the first CO2 storage facility of its kind in Karlsruhe and the third in Germany,” explains Valentin Gutknecht, co-founder and co-CEO of Neustark. “This project shows how innovative technologies and local collaboration can shape the future.” There are currently 29 systems with Neustark technology in operation in Europe. Neustark is also involved in the planning or construction of a further 30 plants.

  • Aargau forest currently stores 40 million tons of CO2

    Aargau forest currently stores 40 million tons of CO2

    The Forest Division of the Aargau Department of Construction, Transport and Environment has examined the contribution of the Aargau forest to the canton’s CO2 balance. “The forest is already making a non-negligible contribution to achieving the goal of net-zero greenhouse gas emissions by 2050, but the potential has not yet been exhausted,” writes the department in a press release on the corresponding study. The study identified the forestry sector, wood processing and the construction industry as key players for improvement.

    The forestry sector is of the greatest importance. The Aargau forest currently stores 40 million tons of CO2, according to the press release. This corresponds “almost exactly to today’s total annual domestic emissions”. According to the authors of the study, this long-term storage of CO2 must be supported by near-natural management, soil protection and long-term adaptation of the forests to climate change.

    Wood processing and the construction industry can contribute to improvements to a lesser extent. The modelling of a CO2-optimized scenario has shown that increased cascading use of wood as a resource can store or avoid up to an additional 11.1 tonnes of CO2 by 2100. This corresponds to an annual reduction in emissions in the canton of Aargau of up to 3.7 percent. Cascade use refers to the repeated use of the raw material wood in a circular economy. However, if the same amount of wood is used directly for energy production, the contribution is reduced to 6.5 million tons or a maximum of 2.2 percent CO2 reduction.

  • New plant for the mineralisation of CO2 in Germany

    New plant for the mineralisation of CO2 in Germany

    Together with its partner Heinrich Feess GmbH & Co. KG,Neustark has commissioned a plant for the permanent storage of CO2 in demolition concrete in Kirchheim unter Teck. The plant at the construction waste recycler in Baden-Württemberg is already the second plant realised by neustark in Germany, ClimateTech from Bern announced in a press release. Around 1000 tonnes of CO2 can be bound in demolition concrete here every year.

    Neustark’s technology works with CO2 generated during local biomethane production. It is captured directly and liquefied for transport. At the plant near Stuttgart, the CO2 is fed into the demolition concrete in an airtight silo. In a short time, it combines there in the form of limestone in the aggregate, writes neustark. The technology shortens the mineralisation process, which takes several decades in nature, to just a few hours.

    “We decided in favour of this innovative technology because it integrates perfectly into our concrete recycling and production process on site,” Walter Feess, Senior Director of the construction waste recycler, is quoted as saying in the press release. For Valentin Gutknecht, co-founder and co-CEO of neustark, the new plant is a further step towards ClimateTech’s goal of being able to permanently bind around 1 million tonnes of CO2 per year by 2030. “What we urgently need now is demand from the public sector for carbonated construction materials in building and road construction and corresponding legal regulations to support efforts towards greater sustainability,” says Gutknecht.