Direct hydrothermal liquefaction of undried macroalgae Enteromorpha prolifera using acid catalysts

Add time:08/22/2019    Source:sciencedirect.com

Direct liquefaction of macroalgae Enteromorpha prolifera without predrying treatment was performed in a batch reactor. Effects of temperature, reaction time, biomass-to-water ratio and acid catalysts (sulfuric acid and acetic acid) on liquefaction products were investigated. Raw material and liquefaction products were analyzed by elemental analysis, Fourier transform infrared (FT-IR) and gas chromatography–mass spectrometry (GC–MS). Results showed that liquefaction at 290 °C for 20 min with 1:3 biomass-to-water ratio produced the highest bio-oil yield of 28.4 wt%, and high heating value (HHV) was 29.5 MJ/kg. Main components of bio-oil were fatty acids, ketones, alkenes and 5-methyl furfural, and main components of water soluble organics (WSOs) were pyridines, carboxylic acids and glycerol. In the bio-oil obtained with acid catalysts, content of ketones significantly increased while alkenes disappeared. Content of 5-methyl furfural also increased. Flow property of bio-oils was improved in the presence of acid catalysts. Moreover, esters were formed when adding sulfuric acid.

We also recommend Trading Suppliers and Manufacturers of 3-Hydroxypyridine-4-carboxylic acid ethyl ester (cas 18342-97-7). Pls Click Website Link as below: cas 18342-97-7 suppliers

Prev:ArticleSynthesis of optically active 1,4-benzoxazinones and 1,5-benzoxazepinones by regiocontrolled ring transformations of oxirane carboxylic acids and esters with aromatic o-hydroxyarylamines
Next:(R)-N-Methyl-3-(3-125I-pyridin-2-yloxy)-3-phenylpropan-1-amine: a novel probe for norepinephrine transporters)