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Oxford Categorie:
Kopersbescherming
487,644
tCO2e validated
12
Artisan Biochar producers
9
Indian states
1,000
Years of storage
What is Biochar
When plant biomass burns or decomposes, the carbon it absorbed returns to the atmosphere within months. Pyrolysis interrupts that cycle. Heating biomass without oxygen converts roughly half of its carbon into a solid, highly aromatic material that resists microbial breakdown for centuries.
In this project, that happens in a Kon-Tiki kiln. A fire is lit in a conical metal kiln and biomass is added in thin layers. The rising pyrolysis gas is caught and burned in a flame curtain above the load, which cleanly combusts the smoke and shields the biochar below from oxidising. The process ends by quenching with water or a nutrient solution fed in from beneath. It requires no fossil fuel to start and no industrial equipment, which is what makes it viable on a smallholding.
Biochar produced this way reaches treatment temperatures above 650 degrees Celsius and an H/Corg ratio well below 0.4. Under the Global Artisan C-Sink Standard that qualifies it as 75% persistent aromatic carbon, the fraction that constitutes a carbon sink for millennia, with the remaining 25% classified as semi-persistent carbon with a mean residence time of around 50 years. Only the persistent fraction is registered as a permanent removal, and every registered sink is recorded in the Global C-Sink Registry with its feedstock, production date, application date and geolocation.
Certificeringsstandaard

Certification Standard
Carbon Standards International develops standards and system solutions for climate-positive agriculture, forestry and industry, and for the upstream and downstream sectors. Among these is the Global Artisan C-Sink Standard, which governs the production, processing and application of biochar in agriculture in low, lower-middle and higher-middle-income countries.
All aspects of the biochar's quality are monitored and documented, and C-sink credits are generated by applying that biochar for agricultural purposes. This project is certified under version 2.1A of the standard and carries project ID GCSP1019 in the Global C-Sink Registry. Validation was carried out by CERES-CERT AG, the independent third-party auditing body for Carbon Standards International, with the validation statement issued on 19 December 2024. All Artisan Producers are inspected on site annually as part of ongoing verification.
Locatie
Beoordeling door Regreener
Artisan biochar sits in an unusual position in the removals market. The technology is simple enough that a smallholder can run it with a metal cone and a day of training, yet the durability of the resulting carbon sink is measured in centuries, which is more than most nature-based projects can claim. Circonomy's Indian network shows what that combination looks like when the accounting is done conservatively. What we like most about this project is the direction of its assumptions. It counts methane from pyrolysis at 30 kg CH4 per tonne of biochar, the standard's default, when its own moisture requirements point to a figure closer to 3.6 kg. It applies a 20 kg CO2e per tonne margin of security for emissions it does not track in detail rather than arguing them away. It registers only the 75% persistent fraction as a permanent removal. Each of those choices reduces the number of credits the project can sell, which is the right signal to see in a project document. The per-load digital monitoring is the second reason we rate it. Feedstock type, moisture content, batch volume, retention sample, blending matrix and the GPS coordinates of final application are all captured in the field on a smartphone, and all Artisan Producers are inspected annually rather than sampled. For a distributed network of smallholder producers, that level of traceability is harder to achieve than it is for a single industrial facility, and it is where comparable artisan projects usually fall short. Buyers should understand two things about where this project is in its lifecycle. First, the validated figure of 487,644 tCO2e is an ex-ante projection for 2023 to 2027, and it is heavily weighted toward the later years: year one accounts for roughly 10,000 tonnes of permanent removals against more than 258,000 in year five. Delivery at that scale depends on the producer network growing substantially, and issued volume in the near term will be a fraction of the headline number. Second, the Global Artisan C-Sink Standard is not among the standards currently carrying an ICVCM Core Carbon Principles label, which matters for buyers with a procurement policy that requires one. Neither point undermines the integrity of a tonne produced by this project. Both affect how much of it you can buy today, and we will tell you exactly what is available before you commit.


















