Effect of Potassium Salts on Biochar Pyrolysis

Alkali pretreatment is one of the chemical technologies that has been examined on various types lignocellulosic biomass. To gain a better insight into effects potassium-based catalyst pyrolysis behavior with different materials, potassium bicarbonate (KHCO3) and nitrate (KNO3) were used as additives in this study. The experimental parameters which included particle size, heating rate, additive loading investigated. results showed adding for both KHCO3 KNO3 to feedstocks led increase biochar. A model-free method, Flynn–Wall–Ozawa (FWO), was implemented study determine activation energy values untreated potassium-treated feedstocks. reduction apparent treated biomass observed. This indicates salt influenced structures main components promoted catalytic effect pyrolysis. Activation energies pine range from 250 308 kJ/mol, wheat straw 277 402 kJ/mol.