کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679012 1459933 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biological hydrogen and methane production from bagasse bioethanol fermentation residues using a two-stage bioprocess
ترجمه فارسی عنوان
تولید هیدروژن و متان بیولوژیکی از باقیمانده های تخمیر بیواتانول با استفاده از فرایند زیستی دو مرحله ای
کلمات کلیدی
بیو انرژی؛ تصفیه بی هوازی فاضلاب؛ نسبت B / A؛ استئوژنز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


• A two-stage bioprocess recovers H2 (0.3%) and CH4 (78.9%) from bagasse bioethanol residues.
• H2 formation from the lactate/acetate utilization accompanied with butyrate production.
• Acetogenesis may potentially reduce the B/A ratio and lead to a lower H2 production.
• The B/A ratio has a positive relationship with H2 yield.

This study investigated the recovery of H2 and CH4 from bagasse bioethanol fermentation residues (bagasse BEFR) using a two-stage bioprocess. In the hydrogen fermentation bioreactor (HFB), carbohydrate removal efficiency was maintained at 82–93% and the highest hydrogen yield was 8.24 mL/g COD at volumetric loading rate (VLR) of 80 kg COD/m3/day. The results indicated a positive correlation between hydrogen yield and butyrate-to-acetate ratio, which might be due to the mechanisms of lactate/acetate utilization for hydrogen production and acetogenesis occurring in the HFB. Remaining volatile fatty acids and alcohols in the HFB effluent were further utilized for methane production in methane fermentation bioreactor (MFB), in which the highest methane yield of 345.2 mL/g COD was attained at VLR of 2.5 kg COD/m3/day. Overall, the two-stage bioprocess achieved a maximum COD removal of 81% from bagasse BEFR, and converted 0.3% and 72.8% of COD in the forms of H2 and CH4, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 210, June 2016, Pages 49–55
نویسندگان
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