| Literature DB >> 22705526 |
Norio Nagao1, Nobuyuki Tajima, Minako Kawai, Chiaki Niwa, Norio Kurosawa, Tatsushi Matsuyama, Fatimah Md Yusoff, Tatsuki Toda.
Abstract
Anaerobic digestion of food waste was conducted at high OLR from 3.7 to 12.9 kg-VS m(-3) day(-1) for 225 days. Periods without organic loading were arranged between the each loading period. Stable operation at an OLR of 9.2 kg-VS (15.0 kg-COD) m(-3) day(-1) was achieved with a high VS reduction (91.8%) and high methane yield (455 mL g-VS-1). The cell density increased in the periods without organic loading, and reached to 10.9×10(10) cells mL(-1) on day 187, which was around 15 times higher than that of the seed sludge. There was a significant correlation between OLR and saturated TSS in the sludge (y=17.3e(0.1679×), r(2)=0.996, P<0.05). A theoretical maximum OLR of 10.5 kg-VS (17.0 kg-COD) m(-3) day(-1) was obtained for mesophilic single-stage wet anaerobic digestion that is able to maintain a stable operation with high methane yield and VS reduction.Entities:
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Year: 2012 PMID： 22705526 DOI： 10.1016/j.biortech.2012.05.045
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642