کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
146074 456362 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combined production of bioethanol and biogas from peels of wild cassava Manihot glaziovii
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Combined production of bioethanol and biogas from peels of wild cassava Manihot glaziovii
چکیده انگلیسی


• Wild cassava peels fermented to ethanol at high yield (95% of theoretical).
• Biogas endeavour system was adapted for ethanol production and on-line measurement.
• Alkali pre-treatment of cassava peels improved methane yield by 56%.
• Combined ethanol–biogas production resulted in up to 3–4-fold energy yield compared to only ethanol production.

Cassava peels were pre-treated with alkali, enzyme and in sequential combination of alkali and enzyme, and used for production of bioethanol or biogas, or both (in sequence, bioethanol followed by biogas). The Biogas Endeavour and Automatic Methane Potential Test Systems were used for production of bioethanol and biogas, respectively. The bioethanol yield and volumetric productivity achieved with alkali pre-treatment combined in sequence with enzyme pre-treatment were 1.9 mol/mol and 1.3 g/L/h which was higher than the yield (1.6 mol/mol) and volumetric productivity (0.5 g/L/h) obtained from only enzyme pre-treated peels. Alkali combined in sequence with enzyme was proven to be the best treatment showing a 56% improvement in methane yield compared to the yield from untreated sample. Combined ethanol and methane production resulted in 1.2–1.3-fold fuel energy yield compared to only methane and 3–4-fold compared to only ethanol production. This study therefore provides practical data on the scenario best suited for the harnessing of energy from cassava peels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 279, 1 November 2015, Pages 297–306
نویسندگان
, , , , , , ,