Effect of influent COD/SO42- ratios on biodegradation behaviors of starch wastewater in an upflow anaerobic sludge blanket (UASB) reactor

Xueqin Lu, Guangyin Zhen, Jialing Ni, Toshimasa Hojo, Kengo Kubota, Yu You Li

研究成果: Article査読

59 被引用数 (Scopus)

抄録

A lab-scale upflow anaerobic sludge blanket (UASB) has been run for 250 days to investigate the influence of influent COD/SO42- ratios on the biodegradation behavior of starch wastewater and process performance. Stepwise decreasing COD/SO42- ratio enhanced sulfidogenesis, complicating starch degradation routes and improving process stability. The reactor exhibited satisfactory performance at a wide COD/SO42- range ≥2, attaining stable biogas production of 1.15-1.17 L L-1 d-1 with efficient simultaneous removal of total COD (73.5-80.3%) and sulfate (82.6 ± 6.4%). Adding sulfate favored sulfidogenesis process and diversified microbial community, invoking hydrolysis-acidification of starch and propionate degradation and subsequent acetoclastic methanogenesis; whereas excessively enhanced sulfidogenesis (COD/SO42- ratios <2) would suppress methanogenesis through electrons competition and sulfide inhibition, deteriorating methane conversion. This research in-depth elucidated the role of sulfidogenesis in bioenergy recovery and sulfate removal, advancing the applications of UASB technology in water industry from basic science.

本文言語English
ページ(範囲)175-183
ページ数9
ジャーナルBioresource Technology
214
DOI
出版ステータスPublished - 2016 8 1

ASJC Scopus subject areas

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

フィンガープリント 「Effect of influent COD/SO<sub>4</sub><sup>2-</sup> ratios on biodegradation behaviors of starch wastewater in an upflow anaerobic sludge blanket (UASB) reactor」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