高級脂肪酸の嫌気的分解過程における硫酸塩還元細菌とメタン生成細菌の基質競合

• 山口 隆司

  呉工業高等専門学校環境都市工学科

• 原田 秀樹

  長岡技術科学大学環境システム系

• 山崎 慎一

  高知工業高等専門学校建設システム工学科

• 曽 怡禎

  国立成功大学生物系

書誌事項

タイトル別名

• Competitive Interaction between Sulfate-Reducing Bacteria and Methane-Producing Bacteria in Anaerobic Degradation of a Long-Chain Fatty Acid.
• コウキュウ シボウサン ノ イヤケテキ ブンカイ カテイ ニ オケル リュウサンエン カンゲン サイキン ト メタン セイセイ サイキン ノ キシツ キョウゴウ

抄録

Competitive interaction between sulfate-reducing bacteria (SRB) and methane producing bacteria (MPB) for hydrogen and for acetate in anaerobic degradation of long chain fatty acids (LFAs) was investigated using two different sludge consortia: the one (referred to as R1) grown in a sulfate-free medium and the other (R2) in a sulfate-rich medium. Both sludges were cultivated in parallel for six months in a fill-and-draw mode on palmitate (C 16, saturated LFA).<br>R1 sludge finally reached a very low sulfate-reducing activity (SRA, 0.019 gCOD·gVSS^-1·d^-1) and a very high methaneproducing activity (MPA, 10.1 gCOD·gVSS^-1·d^-1) for hydrogen-fed vial test: the ratio of SRA/MPA (both on the basis of COD equivalent) was only 0.0019. On the contrary, R2 sludge was characterized by a high hydrogen-fed SRA (1.15 gCOD·gVSS^-1·d^-1) and by a low hydrogen-fed MPA (0.0093 gCOD·gVSS^-1·d^-1): the SRA/MPA ratio was 123. The results of hydrogen-trophic MPN enumeration showed a similar tendency: the SRB/MPB ratios were 1/10^3.6 and 10^2.0 for R1 and R2 sludge, respectively. Therefore, degradation of palmitate into acetate was performed by a symbiosis between proton-reducing acetogenic bacteria (PRB) and MPB in R1 sludge, whereas by a syntrophic association between PRB and SRB in R2 sludge.

収録刊行物

• 水環境学会誌

  水環境学会誌 22 (9), 755-762, 1999

  公益社団法人 日本水環境学会

キーワード

• anaerobic digestion
• long-chain fatty acid
• methane-producing bacteria
• substrate competition
• sulfatereducing bacteria

詳細情報

• CRID: 1390282680057680640
• NII論文ID: 10004453175
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.22.755
• COI: 1:CAS:528:DyaK1MXntlCgsLc%3D
• ISSN: 18813690
• ISSN: 09168958
• NDL書誌ID: 4854533
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4854533
• Web Site: https://www.jstage.jst.go.jp/article/jswe/22/9/22_9_755/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可