Research Progress on the Effect of Acid Treatment on Biomass Pyrolysis Bio-oil
With the rapid increase of global energy demand and the increasing prominence of environmental and sustainable development issues,biomass resources have received extensive attention as a supplement to fossil energy.The conversion of biomass resources into liquid bio-oil with both economic and environmental benefits through rapid pyrolysis technology has attracted much attention.However,the bio-oil obtained by direct pyrolysis has problems such as a wide variety of chemical components,low yield and poor quality.Acid treatment of biomass before rapid pyrolysis can effectively reduce the content of alkali/alkaline earth metal elements(AAEMs)in biomass,significantly change the morphology of biomass,greatly improve the component distribution of bio-oil products,increase the yield of high value-added compounds such as L-dextran,effectively improve the quality of bio-oil,and be more conducive to the separation and purification of bio-oil and high-value utilization in the later stage.This paper analyzes the research status of pyrolysis of biomass after different acid treatment d,discusses the effects of acid treatment and combined acid treatment on the morphology,AAEMs content,pyrolysis process and pyrolysis bio-oil of biomass,provides ideas for the utilization and transformation of biomass resources,and provides a reference for the research and improvement of biomass pyrolysis acid treatment technology.
acid treatmentresearch progress on bio-oilsAAEMsfast pyrolysis
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