کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8869649 | 1622610 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen and methane production in a two-stage anaerobic digestion system by co-digestion of food waste, sewage sludge and glycerol
ترجمه فارسی عنوان
تولید هیدروژن و متان در یک سیستم هضم بی هوازی دو مرحله ای با هضم مواد غذایی، لجن فاضلاب و گلیسرول
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کلمات کلیدی
هیدروژن، متان، هموگلوبین ضایعات طبیعی، لجن فاضلاب، گلیسرول،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
In this study, hydrogen and methane production from co-digestion of food waste (FW), sewage sludge (SS) and raw glycerol (GL) was evaluated in a two-stage acidogenesis-methanogenesis anaerobic system under mesophilic conditions (35â¯Â°C). The effect of glycerol addition (1 and 3% v/v) as co-substrate was assessed in ternary mixtures (FWâ¯+â¯SSâ¯+â¯GL), with the concentration of all substrates kept at 10â¯g VS/L. Besides contributing to reduce the lag phase of the acidogenic bacterial culture, the presence of GL increased the hydrogen production in all tested conditions and the maximum hydrogen yield was obtained for the FWâ¯+â¯SSâ¯+â¯3%GL mixture (179.3â¯mLâ¯H2/gâ¯VS). On the other hand, the highest methane production (342â¯mL CH4/gâ¯VS) was achieved in the test supplemented with 1% GL. At 3% GL, abrupt reductions in the biogas CH4 content and pH values resulting from instability in methanogenesis process were noticed over the experiment. By taking into account the hydrogen and methane production stages, the highest energy yield (i.e., 15.5â¯kJ/gâ¯VS) was obtained with the ternary mixture containing 1% GL. Overall, the results of this study demonstrate the feasibility of using glycerol as co-substrate to increase the H2 and CH4 production efficiency in a two-stage anaerobic co-digestion process, allowing simultaneous treatment of three residues (FW, SS and GL) and energy production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 76, June 2018, Pages 339-349
Journal: Waste Management - Volume 76, June 2018, Pages 339-349
نویسندگان
FabrÃcia M.S. Silva, Claudio F. Mahler, Luciano B. Oliveira, João P. Bassin,