Knowra Biochar Biochar Biochar is a carbon-rich solid made by heating biomass with limited oxygen. Its porous structure and resistance to decomposition make it useful in soils and carbon storage.
Pyrolysis : Thermal decomposition of material in the absence or near-absence of oxygen. Biochar is the solid product of biomass pyrolysis under oxygen-limited conditions.
Soil amendment : Material added to soil to alter its physical, chemical, or biological properties. Biochar is incorporated into soils to influence water retention, nutrients, and habitat.
Biomass : Organic material from plants, animals, or microorganisms that can serve as a renewable resource. Biochar’s carbon and mineral constituents originate in its biomass feedstock.
Life-cycle assessment : A method for estimating the environmental impacts of a product across its life cycle. It accounts for feedstock sourcing, production energy, transport, and biochar use.
Biochar stability : The persistence of biochar carbon against chemical, physical, and biological breakdown. Long-term carbon claims depend on how stability is measured under real conditions.
Slow pyrolysis : A pyrolysis process using relatively slow heating and long residence times to favor solid char production. This route typically maximizes the biochar fraction of biomass products.
Carbon sequestration : The capture and long-term storage of carbon dioxide or other carbon-containing material. Stable biochar can keep biomass-derived carbon out of the atmosphere for extended periods.
Porosity : The fraction of a material’s volume made up of pores or void spaces. Biochar pores affect surface area, water movement, and interactions with soil organisms.
Greenhouse gas emissions : Gases released into the atmosphere that contribute to the greenhouse effect. Net climate benefit depends on emissions from production and changes after application.
Biochar field trials : Experiments that test biochar effects in agricultural or ecological settings over time. Field results reveal how laboratory properties translate into variable soil outcomes.
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