Study on the Hydrolysis of Fir Chips in Dilute Acid under Microwave Irradiation

The production of fuel ethanol from lignocellulose is the frontline in biomass-based energy fields.In this experiment,fir chips was used as biomass raw materials,and dilute hydrochloric acid,dilute sulphuric acid,or dilute phosphoric acid used as hydrolysis catalyst,and the hydrolysis of fir chips in dilute acid under microwave irradiation was studied.The effects of four main factors including acid concentration,total solids content,reaction time and reaction pressure on the hydrolysis of fir chips were investigated through orthogonal experiments.The yield of reducing sugar was used as the indicator to optimize the technical conditions,and parallel experiments under the optimized conditions were carried out to investigate the effects of microwave irradiation on the hydrolysis of fir chips.