کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4925896 | 1431589 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of methane yield using acidogenic effluent of NaOH pretreated corn stover in anaerobic digestion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
This study explored the role of VFAs and ethanol production on daily biogas and methane yield of sodium hydroxide (NaOH) pretreated corn stover (CS) in acidogenic and methanogenic phases during anaerobic digestion. The results from batch experiments revealed that the average methane and CO2 contents produced from NaOH pretreated CS were 53% and 38%, respectively. The concentration of VFAs and ethanol were over 17 g Lâ1 in the acidogenic phase, which were further converted into biogas in methanogenic phase. More specifically, the initially formed acetic, butyric and propionic acids were transformed into methane and CO2 in two different stages of methanogenic phase. On the other hand, two pretreatment regimes (NaOH pretreated CS and acidogenic effluent of NaOH pretreated CS) at the same organic loading rate were studied in continuously stirred tank reactors (CSTR). The methane and biogas yields obtained from acidogenic effluent of NaOH pretreated CS were 335 ml g·VSâ1 and 548 ml g·VSâ1; these values were 63.4% and 37.4%, respectively higher than the yields from NaOH pretreated CS sample. The results showed that sample from acidogenic effluent of NaOH pretreated CS improved methane production and maintained good system operation stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 116, Part A, February 2018, Pages 224-233
Journal: Renewable Energy - Volume 116, Part A, February 2018, Pages 224-233
نویسندگان
Chun Mei Liu, Akiber Chufo Wachemo, Hai Rong Yuan, De Xun Zou, Yan Ping Liu, Liang Zhang, Yun Zhi Pang, Xiu Jin Li,