How it works
How KisanKiln turns residue into biochar
In short: crop residue is heated in a low-oxygen kiln (pyrolysis, roughly 300–700 °C) so it chars instead of burning — producing biochar near where the residue is grown.
The science
What is pyrolysis?
Pyrolysis is heating biomass with very little oxygen. Without enough oxygen to fully combust, the residue breaks down into a stable, carbon-rich solid — biochar — instead of burning away to ash and smoke.
Low oxygen
Limiting oxygen is what separates charring from open burning.
~300–700 °C
Controlled heat in this approximate range drives the conversion.
Stable carbon out
The result is biochar — porous, carbon-rich, and durable.
The model
Why portable and decentralised
KisanKiln is built around bringing the kiln to the residue, not hauling residue to a distant plant.
Less transport
Processing residue close to the field cuts the cost and emissions of moving bulky biomass.
Works at village scale
Decentralised units suit farms, custom-hiring centres, and FPO clusters rather than only large facilities.
Biochar stays local
The biochar produced can go straight back into nearby fields.
Scales by adding units
Capacity grows by deploying more kilns where they're needed.
Step by step
The kiln → biochar → credit pathway
The same four steps that connect a burning problem to soil health and carbon revenue.
- 01
Collect & prepare crop residue
Gather paddy straw and other surplus residue and let it dry, instead of burning it in the field.
Residue that would otherwise be burned is collected and prepared near the farm or aggregation point, keeping transport short in a decentralised model.
- 02
Pyrolyse in the kiln
Heat the residue in a low-oxygen kiln (pyrolysis, roughly 300–700 °C) so it chars instead of combusting.
With limited oxygen the biomass doesn't burn to ash — it converts into biochar, locking much of its carbon into a stable form rather than releasing it as smoke.
- 03
Produce carbon-rich biochar
The kiln yields biochar — a stable, porous carbon that improves soil and stores carbon for the long term.
Biochar can be returned to fields to support soil health and water retention, while the carbon it contains resists breaking back down into CO₂ for a long time.
- 04
Measure, verify & earn carbon credits
MRV quantifies the carbon durably removed, which registries can certify as carbon-removal credits.
Measurement, reporting, and verification (MRV) underpins durable carbon-dioxide-removal credits. Revenue is estimated, not guaranteed, and shared fairly with the people doing the work.
The char output
Each run yields biochar — a stable, porous carbon that can be returned to soil or used in other applications. Exact yield and throughput depend on the device and feedstock.
No invented specs
Find out if biochar works for your residue
Get a project-specific feasibility assessment — residue, biochar, and an honest carbon-revenue estimate.