碳背景下钢铁与生物炭土壤碳汇及其稳定性

Biochar soil carbon sink and its stability under the background of iron and steel carbon neutralization

钢铁低碳需要减排与增汇。生物炭具有较高的稳定性,可在土壤中稳定存在数百年,生物炭土壤碳汇技术的应用对于实现碳封存具有重要意义。基于3060碳背景钢铁行业低碳发展,结合生物炭的稳定性评价,分析了生物炭土壤碳汇的碳封存过程及其潜力,并提出了基于钢铁余热利用的钢铁工业协同生物质能碳汇构想,为钢铁行业实施碳汇提供参考。

Iron&steel industry low carbon needs carbon dioxide emission reduction and increasing carbon sink technologies.Biochar has high stability and can exist in soil for hundreds of years.The application of biochar soil carbon sink technology is of great significance for achieving carbon storage.Based on the 3060 carbon background of low carbon development of iron and steel industry,this paper analyzed the process and potential of biochar soil carbon sink and carbon storage combined with the stability evaluation of biochar,and proposed the conception of synergy between iron&steel industry and biomass energy carbon sink based on steel waste heat utilization,which can provide a reference for implementing carbon sink in iron&steel industry.