Carbon footprint analysis of bamboo waste pyrolysis
This study addresses the scenario of bamboo waste pyrolysis and the resource utilization of its pyrolysis products,employing a methodology grounded in life cycle assessment and sensitivity analysis.It establishes a comprehensive life cycle carbon emission inventory and calculation approach.The primary sources of carbon emissions and reductions within the pyrolysis system are identified,and the sensitivity of carbon reduction capacity to various parameters is assessed.Results indicate that the carbon emissions from pyrolyzing 1 ton of bamboo waste amount to-838.684 kg,resulting in an annual reduction of 38.3 million t of carbon emissions and an annual electricity generation of 2.1×1010 kW·h in China.The predominant contributors to carbon emissions in the system are the combustion for power generation of bio-oil and syngas(34.8%),while carbon reduction is primarily driven by the application of bamboo charcoal to soil(34.0%).The system's carbon reduction capacity exhibits high sensitivity to bamboo waste proportion,annual harvest volume,and pyrolysis product yield,with sensitivity coefficients of 1.297,1.000,and 0.702.Notably,the soil carbon sequestration effect resulting from bamboo charcoal application presents significant carbon reduction potential,estimated at 13 million t annually for an 8.9%bamboo charcoal application rate.This study concludes that bamboo waste pyrolysis holds substantial carbon reduction potential,providing a novel avenue for China to leverage bamboo waste for renewable energy production and effectively mitigate climate change towards achieving"dual-carbon goals".
国家科技期刊平台
NSTL
万方数据
