کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
677164 1459847 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of gamma irradiation and steam explosion pretreatment for ethanol production from agricultural residues
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Comparison of gamma irradiation and steam explosion pretreatment for ethanol production from agricultural residues
چکیده انگلیسی

It was evaluated the influence of gamma irradiation and steam explosion pretreatment on the components and the water-soluble sugars of rice straw. Compared with the steam explosion pretreated rice straw, cellucose, hemicellucose and lignin for irradiation pretreated rice sample were much more greatly degraded and the relative content of glucose was significantly enhanced from 6.58% to 47.44%. Interestingly, no glucuronide acid was detected in irradiation pretreated rice straw, while glucuronide acid with the content from 8.5 mg/g to 9.2 mg/g was obtained in steam explosion pretreated sample. Followed by enzymatic hydrolysis, higher concentration of reducing sugars (including glucose and xylose) of irradiation pretreated rice sample (90.3 mg/g) was obtained, which was approximately 2.4- and 1.1- fold higher of the unpretreated (37.2 mg/g) and of steam explosion pretreated sample (85.4 mg/g). To further verify the effectiveness of irradiation pretreatment, characterizations of rice straw, corn stalk and bagasse by an integrated process of dilute acid/enzymatic hydrolysis and irradiation pretreatment were also investigated.


► We compare irradiation and steam explosion pretreatments for bioethanol production.
► We examine changes in compositions of the components and the water-soluble sugars.
► No glucuronide acid was detected in gamma irradiation pretreated rice straw.
►  We evaluate an integrated method of acid/enzyme-hydrolyzed irradiation pretreatment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 46, November 2012, Pages 301–308
نویسندگان
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