کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
300036 512465 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced ethanol production by simultaneous saccharification and fermentation of pretreated olive stones
ترجمه فارسی عنوان
افزایش تولید اتانول به وسیله واکسیناسیون همزمان و تخمیر سنگ های زیتون پیش پردازش شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Ethanol-based organosolv treatment was assayed for first time on olive stones.
• High lignin and xylan removal from biomass was obtained.
• The effect of particle size on fuel-ethanol production was assessed.
• Complete conversion of pretreated cellulose to ethanol was achieved.

Olive stones are an agro-industrial by-product in Mediterranean countries that can be regarded as a potential source of bio-fuels and bioactive compounds. In this work, olive stones were pretreated with liquid hot water (LHW), dilute sulphuric acid (DSA) and organosolv delignification at temperatures in the range 190 °C–230 °C. The resulting solids from pretreatments were subjected to simultaneous saccharification and fermentation (SSF) with the yeast Saccharomyces cerevisiae IR2-9a for fuel-ethanol production. The composition of prehydrolysates from LHW and DSA pretreatments were strongly dependent of reactor temperature. The highest yields of d-xylose (0.21 kg kg−1) and d-glucose (0.11 kg kg−1) were achieved in DSA assays at 200 °C and 230 °C, respectively, while LHW processes provided the maximum oligosaccharide recovery (0.17 kg kg−1) at 210 °C. The addition of sulphuric acid in organosolv pretreatments was particularly effective to increase the cellulose content of the pretreated solids till percentages close to 83%. Finally, the maximum ethanol concentration achieved by SSF was 47.1 kg m−3, and 13 kg ethanol were obtained from 100 kg of raw material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 74, February 2015, Pages 839–847
نویسندگان
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