Hydrotreatment of biocrudes derived from hydrothermal liquefaction and lipid extraction of the high-lipid Scenedesmus

Abstract

Biocrudes derived from hydrothermal liquefaction (HTL) and lipid extraction (EXT) of the high-lipid Scenedesmus were hydrotreated to investigate the influences of the feedstock on the profiles of the hydrotreating biofuels.

Extended Catalyst Lifetime Testing for HTL Biocrude Hydrotreating to Produce Fuel Blendstocks from Wet Wastes

“…Consistent with other HTL wet-waste feedstocks, the upgraded product from biocrude derived from sewage sludge and food waste is rich in C 16 and C 18 nalkanes. 29,30 Most biological processes produce molecules, such as free fatty acids, which can be converted to n-C 16 and n-C 18 molecules through HTL and hydrotreating. Interestingly, both upgraded biocrudes derived from food waste had a higher ratio of C 18 n-alkanes to C 16 n-alkanes than HTL biocrude derived from sewage sludge.…”

Energy valorization of integrating lipid extraction and hydrothermal liquefaction of lipid-extracted sewage sludge

“…HTL of palmitic acid (PA) at three different temperatures was conducted to support the above made hypotheses. PA was selected as model fatty acid as it has been widely confirmed as the major fatty acid in sewage sludge (Olkiewicz et al, 2012(Olkiewicz et al, , 2014Tang et al, 2019;Zhu et al, 2014), also identified from FAME as shown in Fig. 1.…”

The influence of lipids on the fate of nitrogen during hydrothermal liquefaction of protein-containing biomass

“…The investigation of ternary mixtures can be used to evaluate their potential bio-oil production via co-liquefaction. Furthermore, lipid extraction from waste biomass to be used for biodiesel increasingly becomes the focus of research [28,29]. How to effectively deal with the residues after extraction will most likely become a new challenge.…”