Effects of digestate recirculation on a two-stage anaerobic digestion system, particularly focusing on metabolite correlation analysis

Chuanfu Wu, Qiqi Huang, Miao Yu, Yuanyuan Ren, Qunhui Wang, Kenji Sakai

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

Single-stage (S-N treatment) and two-stage anaerobic digestion with (T-R treatment) and without digestate recirculation (T-N treatment) for methane production using food waste (FW) were comparatively evaluated to examine the effects of digestate recirculation on anaerobic digestion (AD). Digestate recirculation positively affected the methane yield and organic loading rate (OLR). Metabolite correlation analysis revealed that a systematic hydrolysis degree of greater than 75% is crucial to achieve the complete recoverable yield of methane from FW. Digestate recirculation also markedly increased the system alkalinity, maintaining an optimum pH for methanogens. However, the ammonium accumulated by T-R treatment would destroy the metabolic balance between the hydrolytic bacteria and methanogens, especially at a critical OLR. Therefore, the appropriate control of two-stage AD systems with digestate recirculation is limited not only to OLR regulation but also to the prevention of ammonium accumulation.

元の言語英語
ページ(範囲)40-48
ページ数9
ジャーナルBioresource Technology
251
DOI
出版物ステータス出版済み - 3 1 2018

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Anaerobic digestion
Methane
Metabolites
Methanogens
metabolite
methane
Ammonium Compounds
ammonium
Alkalinity
food production
alkalinity
hydrolysis
Hydrolysis
Bacteria
bacterium
food
effect
analysis
rate
anaerobic digestion

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

これを引用

Effects of digestate recirculation on a two-stage anaerobic digestion system, particularly focusing on metabolite correlation analysis. / Wu, Chuanfu; Huang, Qiqi; Yu, Miao; Ren, Yuanyuan; Wang, Qunhui; Sakai, Kenji.

:: Bioresource Technology, 巻 251, 01.03.2018, p. 40-48.

研究成果: ジャーナルへの寄稿記事

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AU - Wang, Qunhui

AU - Sakai, Kenji

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