Measuring Inorganics in Biomass fast Pyrolysis Oils

Charles-Philippe Lienemann (1) , Alain Quignard (1) , Nathalie Texier (1) , Nadège Charon (1)

1 IFPEN - IFP Energies nouvelles

Measurement of inorganics present in biomass fast pyrolysis liquids has been scarcely investigated in the literature. In this work several analytical methods based on different sample preparations were investigated and applied on a set of nine biomass fast pyrolysis liquids covering a wide range of inorganics contents that have been measured using an ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer) analyser. Several required mineralisation first steps were studied to completely dissolve the samples. Our results show that the ISO 16967 method, initially developed for solid biomasses and adapted here for bio-oils, was the most interesting one to quantify three major inorganics (i.e. potassium, magnesium and sodium), measurement of calcium contents remaining a challenge when applied to bio-oils, while good results were obtained for reference materials.

Mots clés: Analysis; ICP; Inorganics; Pyrolysis; Bio-oil; Lignocellulosic biomass; Metals

Domaines: Chimie; Sciences de l'environnement

Charles-Philippe Lienemann, Alain Quignard, Nathalie Texier, Nadège Charon. Measuring Inorganics in Biomass fast Pyrolysis Oils. Journal of Analytical and Applied Pyrolysis, 2021, 159, pp.105313. ⟨10.1016/j.jaap.2021.105313⟩. ⟨hal-03432756⟩