کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7070523 | 1459925 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Methane production from formate, acetate and H2/CO2; focusing on kinetics and microbial characterization
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
For evaluating the methanogenesis from typical methanogenic precursors (formate, acetate and H2/CO2), CH4 production kinetics were investigated at 37 ± 1 °C in batch anaerobic digestion tests and stimulated by modified Gompertz model. The results showed that maximum methanation rate from formate, acetate and H2/CO2 were 19.58 ± 0.49, 42.65 ± 1.17 and 314.64 ± 3.58 N mL/gVS/d in digested manure system and 6.53 ± 0.31, 132.04 ± 3.96 and 640.16 ± 19.92 N mL/gVS/d in sewage sludge system during second generation incubation. Meanwhile the model could not fit well in granular sludge system, while the rate of formate methanation was faster than from H2/CO2 and acetate. Considering both the kinetic results and microbial assay we could conclude that H2/CO2 methanation was the fastest methanogenic step in digested manure and sewage sludge system with Methanomicrobiales as dominant methanogens, while granular sludge with Methanobacteriales as dominant methanogens contributed to the fastest formate methanation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 218, October 2016, Pages 796-806
Journal: Bioresource Technology - Volume 218, October 2016, Pages 796-806
نویسندگان
Xiaofang Pan, Irini Angelidaki, Merlin Alvarado-Morales, Houguang Liu, Yuhong Liu, Xu Huang, Gefu Zhu,