کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
678634 888659 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Using trifluoroacetic acid to pretreat lignocellulosic biomass
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Using trifluoroacetic acid to pretreat lignocellulosic biomass
چکیده انگلیسی

Biomass pretreatment is one of major bottlenecks to convert biomass to bioethanol at present. We found that cereal straw could be completely dissolved in a 10-fold volume excess of trifluoroacetic acid (≥99%) (TFA). Pretreatment with TFA completely disrupted the dense cellulose crystallinity of the biomass. Further research showed that the TFA dissolved, but did not degrade, the cellulose in the straw. TFA did, however, degrade 65.65% of xylan in the straw, as well as reduce 20.0–23.3% of the acid-insoluble lignin. Isopropanol could precipitate 92.7% of the material dissolved in the TFA solution. These results led us to design a procedure for pretreatment of cellulosic biomass involving a dissolving step with TFA and a precipitation step with isopropanol. Experiments show that the procedure is technically feasible. Moreover, TFA and isopropanol could be completely evaporated off the supernatant and precipitate, and recycled back into the process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 33, Issue 12, December 2009, Pages 1719–1723
نویسندگان
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