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نویسندگان مقالات پربازدید :
فناوری منابع زیستی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • kinetic modeling of xylan hydrolysis in co- and countercurrent liquid hot water flow-through pretreatments

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 522
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a kinetic model for xylan hydrolysis in liquid hot water flow-through pretreatment was developed. the model utilized a declining xylan hydrolysis rate constant with increasing conversion in combination with direct xylooligomer degradation. the model was able to describe experimental results from flow-through pretreatment of corn stover and triticale straw at various pretreatment temperatures, and was applied to predict and compare the performance of xylan hydrolysis in co- and countercurrent flow-through pretreatments. countercurrent pretreatment resulted in higher concentration of solubilized xylan and 3–6-fold less degradation. maintaining a temperature gradient along the reactor axis reduced degradation compared to a fixed reactor temperature. biomass bed shrinking during pretreatment increased the final concentration of solubilized xylan by about 10%. model predictions were sensitive to the packing density of biomass bed. the model is useful for evaluating biomass flow-through pretreatments and has utility in design of flow-through reactors.

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