کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7064408 | 1459825 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Downscaled method using glass microfiber filters for the determination of Klason lignin and structural carbohydrates
ترجمه فارسی عنوان
روش پیش رونده با استفاده از فیلتر میکروفیبر شیشه ای برای تعیین لیگنین کلاسان و کربوهیدرات های ساختاری
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کلمات کلیدی
کلاسون لیگنین، تجزیه و تحلیل ترکیبات زیست توده، سلولز، همی سلولوز، سوخت های زیستی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The analysis results of Klason lignin and structural carbohydrates determined by downscaled analysis methods using 50Â mg and 5Â mg biomass and glass microfiber filters for the filtration of acid-insoluble lignin, were compared to a conventional method using 300Â mg biomass and ceramic crucibles. The usage of microfiber filters reduces space requirement in oven and furnace to a minimum and speeds up the filtration of Klason lignin about three-fold. Furthermore, tedious cleaning of crucibles is unnecessary which additionally increases the number of samples that can be analyzed in a given time frame. The analysis of 5 feedstocks comprising herbaceous, hard- and softwood, revealed no significant differences of hemicellulosic sugars between the 50Â mg microfiber and the 300Â mg crucible method. The 50Â mg microfiber method resulted in Klason lignin values in the range of â6.1% to +4.0% (relative) and glucan values in the range of â0.8% to +3.7% (relative) of the values obtained with the 300Â mg crucible method. The 50Â mg microfiber method was highly reproducible with relative standard deviations (RSD%) of 0.27-0.56% (average 0.38%) for Klason lignin and 0.54%-1.46% (average 1.01%) for glucan. Compared to the 50Â mg microfiber method, the 5Â mg microfiber method resulted in similar deviations of Klason lignin and glucan from the 300Â mg method values. However, the reproducibility was slightly lower. Overall, the 50Â mg and 5Â mg microfiber method reflected the actual biomass composition with sufficient accuracy and are therefore recommended as alternative methods or when downscaling of the analysis is required.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 68, September 2014, Pages 75-81
Journal: Biomass and Bioenergy - Volume 68, September 2014, Pages 75-81
نویسندگان
Ana B. Ibáñez, Stefan Bauer,