کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5148364 1497369 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Methane production characteristics and microbial community dynamics of mono-digestion and co-digestion using corn stalk and pig manure
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Methane production characteristics and microbial community dynamics of mono-digestion and co-digestion using corn stalk and pig manure
چکیده انگلیسی
This study investigated methane productions and the microbial communities in the batch anaerobic digestion process with the mono-digestion of corn stalk (CS) and pig manure (PM), and the co-digestion of them. Co-digestion showed the best methane performance, the cumulative methane yield, 256.57 mL·gVS−1; methane production potential, 281.55 mL·gVS−1; maximum methane production rate, 10.17 mL·d−1·gVS−1; and lag phase, 4.24 d. Moreover, co-digestion achieved a more suitable microenvironment including pH, FA and FVFA compared to mono-digestions. Results of high-throughput sequencing indicated that in co-digestion the dynamic changes of relative abundances of phyla and predominant genera were very small and community structure presented a stable status. Acetoclastic pathway was the main biochemical pathway of methanogenesis in co-digestion and mono-digestion of PM, and the growth rate of Methanosaeta in co-digestion was higher. So suitable microenvironment in co-digestion resulted in high growth rate of methanogens and stable microbial community, and leaded to the high methane production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 8, 23 February 2017, Pages 4893-4901
نویسندگان
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