کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7080272 | 1459995 | 2013 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High pressure assist-alkali pretreatment of cotton stalk and physiochemical characterization of biomass
ترجمه فارسی عنوان
پیشگیری از فشار آلکالین با فشار بالا از ساقه پنبه و خصوصیات فیزیکی شیمیایی زیست توده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Ground cotton stalks were pretreated with sodium hydroxide (NaOH) at concentrations of 1-4% (w/v), pressures of 30-130Â kPa, durations of 15-75Â min, and liquid/solid ratios of 10:1-30:1. Modeling of the high pressure assist-alkali pretreatment (HPAP) of cotton stalk was attempted. The levels of NaOH concentration, pressure, and duration were optimized using a Box-Behnken design to enhance the cellulose content of treated solid residue. The optimum pretreatment conditions were as follows: liquid/solid ratio, 20:1; pressure, 130Â kPa; NaOH concentration, 3.0%; duration, 40Â min. During the conditions, cellulose content of pretreated cotton stalk residue was 64.07%. The maximum cellulose conversion of 45.82% and reducing sugar yield of 0.293Â g/g upon hydrolysis were obtained. Significant differences were observed in biomass composition and physiochemical characteristics between native and alkali-treated biomass. High NaOH concentration and pressure were conducive to lignin dissolution and resulted in increased cellulose content and conversion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 148, November 2013, Pages 494-500
Journal: Bioresource Technology - Volume 148, November 2013, Pages 494-500
نویسندگان
Shuang-kui Du, Xinna Zhu, Hua Wang, Dayun Zhou, Weihua Yang, Hongxia Xu,