Characterization of methanogenesis, acidogenesis and hydrolysis in thermophilic methane fermentation of chicken manure

Qigui Niu, Toshimasa Hojo, Wei Qiao, Hong Qiang, Yu You Li

研究成果: Article査読

65 被引用数 (Scopus)

抄録

The thermophilic methane fermentation of chicken manure (CM) with a total solids (TS) of approximately 10% was investigated with regard to ammonia inhibition. A gradual increase in total ammonia nitrogen to 6000mg/L was observed in the case of raw CM fermentation. A distinct rise in VFA accumulation combined with a low methane production of 0.29L/gVS occurred at a TAN of 4000~5000mg/L. Biogas production completely ceased when TAN reached 8000mg/L after the addition of NH4HCO3. The high sensitivity of methanogenesis to TAN and free ammonia (FA) was quantitatively confirmed. The IC50 of TAN for methanogenesis, acidogenesis and hydrolysis was 5058, 5305 and 5707mg/L at a pH value of 8.1±0.2. Similar results but with a lower IC50 were obtained for FA inhibition during fermentation. The microbial community analysis revealed significant differences in hydrogenotrophic methanogens and aceticlastic methanogens before and after inhibition.

本文言語English
ページ(範囲)587-596
ページ数10
ジャーナルChemical Engineering Journal
244
DOI
出版ステータスPublished - 2014 5 15

ASJC Scopus subject areas

  • 化学 (全般)
  • 環境化学
  • 化学工学(全般)
  • 産業および生産工学

フィンガープリント

「Characterization of methanogenesis, acidogenesis and hydrolysis in thermophilic methane fermentation of chicken manure」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル