Bioresource Technology
Bioresource Technology
5 years ago

Renewable platform chemicals from directional microwave-assisted liquefaction coupling stepwise extraction of waste biomass

Renewable platform chemicals from directional microwave-assisted liquefaction coupling stepwise extraction of waste biomass
Directional microwave-assisted liquefaction and stepwise extraction are introduced for producing platform chemicals: aromatics and monosaccharides. When sulfuric acid was used as a catalyst, a 45% monosaccharides yield and a 29% aromatics yield were obtained from bamboo with 0.3g catalyst per 18g methanol and 2g bamboo at 160°C with 10min. Approximately 78–86wt% of the six biomass materials were converted into liquid products. After the stepwise extraction and precipitation process, the yields of monosaccharide derivatives and three phenolic compound fractions were 39–45% and 28–32%, respectively. Monosaccharides from holocellulose collected with a high purity of methyl glycosides were higher than 90%. Aromatic derivatives with different weight-molecular distributions were separated into three fractions with more than 80% phenolics. As their similar chemical properties within each fraction, platform chemicals have great commercial potential for producing high-quality chemicals and biofuels using mild upgrading conditions.

Publisher URL: www.sciencedirect.com/science

DOI: S0960852417312981

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