Phosphoric Acid Catalysed Hydrolysis Impact on the Cellulose Content in the Wood Residue after Furfural Production
Brazdausks, P., Rizhikovs, J., Brazdauska, E.
To improve the system outcome of lignocellulosic biorefineries, a new pretreatment method for biomass pentosans conversion into furfural and preservation ofa high amount of the initial cellulose content in the solid residue was developed.In this pretreatment, phosphoric acid was used as a catalyst. Experiments were organized based on the three-factor central composite face-centered design. The variable parameters were treatment temperature (160-180°C), time (30-90 min) and catalyst amount (3-7 wt.%). At the goal where cellulose losses do not exceed 10% of the initial amount, the maximum furfural yield from the birch wood chips (10.2% of oven-dried mass) was reached at hydrolysis temperature of 175°C, catalyst amount of 3 wt.%, treatment time of 90 min while from the aspen wood chips (8.3% of oven-dried mass) – 173°C, 3.9 wt.%, 89 min. It allows to conclude, that using phosphoric catalyzed hydrolysis it is possible to produce an equivalent amount of furfural from deciduous wood compared with today's furfural production technologies. Moreover, these results suggest that the developed furfural production technology can be integrated into a biorefinery system where cellulose is used as a feedstock.
catalysis, wood, pretreatment, hydrolysis, lignocellulosic sources, biobased products
Biomass Conversion to Intermediate Bioenergy Carriers, Sustainable Biofuels and Bio-Based Products
29th European Biomass Conference and Exhibition
929 - 933
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