Effect of Addition of Alkali Metal on Pyrolysis Behavior and Kinetics of Mushroom Residue
To investigate the effect of metal salt on the pyrolysis process of biomass,this paper took the mushroom residue(MR)as the raw material and pretreated it with alkali metals.The thermal behavior and kinetic of the samples were analyzed using thermogravimetric analysis.The results showed that an increase in KCl concentration caused the MR pyrolysis to shift towards higher temperatures and increase pyrolysis residues.In contrast,the addition of KNO3,K2SO4,and NaCl promoted the MR pyrolysis to shift towards lower temperatures and reduce pyrolysis residues.The kinetic analysis indicated that the activation energy of MR was 34.03 kJ/mol,and an increase in KC1 concentration led to higher activation energy values for MR pyrolysis(40.53～70.46 kJ/mol).On the other hand,the addition of KNO3,K2SO4,and NaCl enhanced the decomposition of MR and effectively reduced the activation energy of the reaction.This study demonstrates that alkali metals have a significant impact on the biomass pyrolysis process.
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