Date

8-22-2018

Project

Energize New Mexico

Component

Bioalgal Energy

Award Number

IIA-1301346

Document Type

Dataset

Abstract

Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is utilized for the direct comparison of the chemical composition of biocrudes generated from the hydrothermal liquefaction of 100% pine, 100% algae, 75:25 pine:algae, and 50:50 pine:algae feedstocks. Analysis reveals that the heteroatom class composition within the 72:25 and 50:50 pine:algae biocrudes is a composite of the two parent feeds (i.e., pine and algae) with a lower relative abundance of Ox species and a higher relative abundance of nitrogen-containing species than the pine biocrude. Alternatively, the biocrude blends have a lower relative abundance of nitrogen-containing species where N>2 than the algae biocrude. The 75:25 pine:algae biocrude has more elemental formulae in common with the pine biocrude than the 50:50 blend does; however, both blends have more elemental formulae in common with the algae biocrude. Interestingly, >20% of the elemental formulae assigned to monoisotopic peaks within the 75:25 and 50:50 biocrude blends are new species not present in either the pine or algae biocrudes. The highest relative abundance of these new species belong to the N2O4-6 classes, which correspond to heteroatom classes with a moderate number of nitrogen atoms and higher number of oxygen atoms per molecules than the species within the pure algae biocrude. Compositionally, the novel species have the same structural motif but are of higher DBE and carbon numbers than the species within the algae biocrude. These original species are most likely generated from molecules from both feeds, thus having higher oxygen contents than typically seen in the algae biocrude but also higher nitrogen contents than seen in the pine biocrude.

Download

Share

Article Location

 
COinS