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Concrete is the most widely used manmade material in the world.
It comes with two big environmental challenges:
The production of concrete is responsible for 6% of global CO₂ emissions.
If it was ranked as a country, the concrete industry would be the 3rd largest emitter in the world.
With over 1 billion tons/year, concrete from construction & demolition is the
world’s single largest waste stream.
This number is set to double decade after decade.
A scalable containerized technology
Setting up a
capture carbon emissions from concrete production
from the atmosphere.
The CO₂ is permanently turned into calcite stone inside the pores of the demolished concrete aggregate.
The CO₂ treatment positively alters the properties of the demolished concrete.
This carbonated aggregate is used instead of mined aggregates for fresh concrete.
Through the carbonated aggregate, less cement is used in concrete production.
Start of technology development at ETH Zurich
Founding team complete
Successful reactor test at pre-commercial scale
Commercial scale reactor deployment in Bern, Switzerland
CO₂ is captured from biogas upgrading facility of the bern wastewater treatment plant (arabern).
CO₂ is turned into stone inside the pores of the demolished concrete which is recycled at the Kästli concrete plant close to Bern, Switzerland.
The carbonated aggregate is used as a replacement for mined gravel for the production of fresh concrete.
Johannes Tiefenthaler and Valentin Gutknecht founded Neustark with a vision. Whilst building up a restorative business and proving the world that sustainable impact needs a business case, people working at Neustark strive at helping all colleagues and stakeholder to unfold their full potential.
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