کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997442 1459906 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Separation of saccharides from prehydrolysis liquor of lignocellulose to upgrade dissolving pulp mill into biorefinery platform
ترجمه فارسی عنوان
جداسازی سکچرید از مشروب پیش هیدرولیز لیگنوسلولوز برای ارتقاء پالپ حلال پالپ به پلت فرم بیورفینکینگ
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
In this work, a competitive process consisting of polyelectrolyte flocculation, active carbon absorption, and ion exchange was developed for hemicelluloses-derived saccharides (HDSs) purification from prehydrolysis liquor (PHL) of lignocellulose. Results showed that colloidal lignin counted for 20% of non-saccharide compounds (NSCs) and could be eliminated by flocculation at 500 mg/L polyaluminium chloride and 50 mg/L anionic polyacrylamide. Active carbon was very effective for decoloration of flocculation-treated PHL, but showed limited absorption selectivity toward NSCs. Lignin, the dominant component of NSCs, is characterized with phenolic hydrogen groups. Phenolic lignin could be easily captured by anion exchange resin with 80% removal. The proposed process showed great industrial potential because of the high value saccharides, but also low molecular phenolic lignin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 237, August 2017, Pages 122-125
نویسندگان
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