Alkaline Technologies
Recycling metals
Mineralize CO2
Building sustainably
Accelerating the ecological transition
Combining advanced metal recovery with CO2 mineralization in alkali waste opens an innovative path to accelerate the ecological transition. By valorizing solid residues from incineration, metallurgy, or construction, we permanently sequester CO2 in mineral form and give these materials a second life.
Recovery of strategic, critical and precious metals
Production of inert materials for construction
Permanent carbon dioxide sequestration
Our technological expertise
Alkaline technologies offers specialized expertise services in geochemistry, characterization and CO2 mineralization.
Our technology aims to treat alkaline industrial waste (bottom ash and slag) to maximize environmental benefit and value creation.
What is accelerated CO2 mineralization?
Accelerated CO2 mineralization involves replicating and optimizing a natural process: CO2 reacts chemically with calcium- or magnesium-rich minerals to form stable carbonates. This reaction permanently fixes the CO2, without the need for long-term monitoring, as it is trapped in solid form.
The ASHES program
A research program to develop technological building blocks for bottom ash and other alkaline industrial waste
Recycling strategic metals
Mineralize CO2 sustainably
Strengthening our sovereignty
Capture in stable form
Stabilize pollutants
Promoting a local resource
Reduce environmental risks
Circular economy opportunity
Reduce landfilling
Create new materials
​Limit the use of landfills
Construction aggregates
The mineralization of carbon dioxide (CO2) in steelmaking slag and bottom ash represents an innovative and promising avenue for combating climate change. These alkaline wastes contain rare and precious metals. By valorizing the solid residues from waste incineration, we sustainably capture CO2 in the form of stable minerals, while simultaneously giving these materials a second life.
Most waste carbonation solutions lock CO2 into materials, leaving contaminants and valuable metals embedded in low-value aggregates and limiting environmental and economic performance. We take the opposite approach: first recover metals, then carbonate the cleaned mineral fraction under controlled conditions. Our integrated process turns complex wastes into resources and makes carbon removal a profitable co-benefit of advanced waste management.
OUR TEAM
Fabien MICHEL
CEO, Co-founder
Tel: +33 6 32 08 02 81
Quentin WEHRUNG
CTO, Co-founder
Tel: +33 6 63 28 17 62
Scientific Committee
Prof. Linda PASTERO
DST, NIS, UniTo,
Turin, Italy
Geologist | Carbonate mineralogy, crystal growth & CCUS
Dr. Davide Bernasconi
CER,
Hatfield, United Kingdom
Chemist | Sustainable binders for cements & geopolymers
They support us
CONTACT US
OUR ADDRESS
Offices
44700 Orvault, France
Email: hello@alkalinetech.com
Laboratory
Earth Sciences Department
University of Turin, Italy
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