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  • pretreatment of rice hulls by ionic liquid dissolution

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 657
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     as a highly available waste product, rice hulls could be a starting block in replacing liquid fossil fuels. however, their silica covering can make further use difficult. this preliminary study investigates effects of dissolving rice hulls in the ionic liquids 1-ethyl-3-methylimidazolium acetate (emim ac), 1-hexyl-3-methylimidazolium chloride, (hmim cl), and 1-allyl-3-methylimidazolium chloride (amim cl), and what lignocellulosic components can be precipitated from the used ionic liquid with water and ethanol. emim ac dissolution at 110 °c for 8 h was found to completely remove lignin from rice hulls, while ethanol was capable of precipitating lignin out of the used emim ac. with 8 h dissolution at 110 °c using hmim cl, approximately 20% of the cellulose in the rice hull sample can be precipitated out using water as co-solvent, while more than 60% of the hemicellulose can be precipitated with ethanol.

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