Thermochemical Transformation of Agro-biomass into Biochar: Simultaneous Carbon Sequestration and Soil Amendment

摘要: The gradual rise in average global temperature over the last few decades is evidence of adversities climate change. Therefore, research and development efforts to investigate materialize innovative economically viable methods mitigate carbon emission have received unprecedented priority. One plausible sequester a sustainable manner could be fix carbonaceous materials on very long-term basis by thermochemical transformation agricultural biomass residues into biochar. It has been reported literature that pyrolysis organic can yield up 50–70 % (w/w) biochar as value-added product. Furthermore, composition ≥60–80 %, which equivalent ≥2.20–2.94 ton CO2 sequestered/ton even after conservative estimation (e.g., 20 liberation from land application) kinetics biochar-bound loss, substantial amount sequestered soil for long term (≥100 s 1,000 years or more). On other hand, amendment with found enhance physicochemical well biological characteristics soil. Biochar act buffering agent acidic soils; water retention capacity, favorable matrix formation beneficial microbial flora, degradation toxic compounds; provide bioavailable nutrients plants consortia. present cost commercially available ≅100–500 $/ton (without any credit basis), considerably higher than chemicals, such lime (≅50 $/ton), main deterrent its marketability. However, under one more conditions government subsidies/carbon gains, mass scale production (demand–supply dynamics), data benefits correlated techno-economics make successful. This will positive impact mitigation emission.