Our Process
1. Residual Biomass
Slíglas can utilise residual woody biomass from invasive species clearance, forestry, sawmills or industry for biochar production. Once chipped, woody residues are an ideal feedstock as they have high availability and are a uniform product with proven pyrolysis performance. If not for their conversion to biochar, these residues would quickly break down and allow carbon to make its way back into the atmosphere.
2. Pyrolysis
Slíglas prioritises streamlined carbon removal over energy generation or mixed waste processing. This clear aim significantly lowers capital and operational costs while reducing technological risks often associated with more complex systems. The company is designing continuous pyrolysis reactors to align with this philosophy. The reactor’s modular nature allows for rapid scaling and flexible deployment close to residue sources.
3. Sequestration
Slíglas partners with local farmers to store biochar on agricultural land, safely returning carbon to the earth. Biochar is a hugely beneficial addition to soil, improving nutrient retention and crop yields. This helps farmers to reduce reliance on chemical fertiliser. Biochar also provides a suitable habitat for beneficial microbes and fungi to thrive, improves drainage / aeration and increases resilience to extreme weather events.
Certification
Measurement, Reporting and Verification (MRV) and certification are critical in CDR to establish trust, transparency, and credibility in reported carbon removal outcomes. MRV provides a standardised, rigorous framework to accurately measure and track the amount of CO₂ sequestered, ensuring that carbon credits represent genuine climate impact and are not overstated or misrepresented. Certification is a formal recognition that a project meets a specified standard based on MRV data.
Slíglas is working with Rainbow as certification partner. Rainbow is endorsed by the International Carbon Reduction and Offset Alliance (ICROA) and requires all carbon credits to deliver measurable and verifiable impact. Slíglas has collaborated with Rainbow on pilot facility pre-certification. More information and the Project Design Document (PDD) can be found at the Slíglas project page on the Rainbow registry.
Removals with Biochar
In the natural carbon cycle, plants and trees capture carbon dioxide continuously through photosynthesis. In turn, animals and microbes consume biomass, releasing carbon dioxide through respiration. Pyrolysing biomass at high temperatures causes it to transform into biochar, a stable form of carbon that cannot easily be broken down. Once sequestered in soil, it will remain there for thousands of years.
