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  • optimization of microwave-assisted calcium chloride pretreatment of corn stover

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 622
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a 62.5% (w/w) cacl2 solution was used in the microwave pretreatment of corn stover. the central composite design (ccd) of response surface methodology (rsm) was employed to design and optimize the cacl2-assisted microwave pretreatment (cacl2-pretreatment). temperature and time were the main factors affecting the enzymatic digestibility of corn stover. after cacl2-pretreatment, hemicellulose degradation reached 85.90%, the specific surface area (ssa) increased by 168.93%, cellulose crystallinity index (cri) decreased by 13.91% compared to untreated corn stover. the optimal conditions for glucose production with the cacl2-pretreatment obtained by ccd were, 162.1 °c, 12 min and solid-to-liquid ratio 10% (w/v). under these conditions, the enzymatic hydrolysis ratio of cellulose was 90.66% and glucose recovery was 65.47%. this novel process achieved the temperature of about 160 °c necessary for lignocellulose pretreatment under atmospheric pressure using the cheap calcium chloride as the heating medium.

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