HIGH PRESSURE PHASE EQUILIBRIA PREDICTION OF RENEWABLE LIGNING DERIVED AROMATIC COMPOUNDS WITH CO2

FRANCISCO S.; HEGEL, P.; PEREDA, S.

Coimbra

Conferencia; Second Iberian Meeting on Supercritical Fluids; 2022

Universidad de Coimbra

Biomass fractionation into its individual building blocks is a major challenge, inparticular, for the valorization of low-cost raw biomass or subproducts/residues from thebiomass processing industry, like gums or kraft lignin from oil and pulp plants. Aromaticrings are present in biomass as part of lignin structure and as linking compounds ofcarbohydrate polymers. There are several pathways to fractionate these natural polymers,among thermal treatments pyrolysis and hydrolysis are both relevant, also base catalyzeddepolymerization or oxidative cleavage [1]. In fast pyrolysis, the bio-oil is a promisingalternative to fossil fuels and is currently entering the heating oil market. [dahmen] Inaddition, it can be further processed to synthesis gas, from which synthetic fuels andchemicals can be obtained. Nonetheless, to boost the whole process economy, it isimportant to recover as much valuable compounds as possible, prior to either burning orgasifying the bio-oil. Similarly, lignin hydrolysates also comprise aromatic compounds.