Multiple effects of trace elements on methanogenesis in a two-phase anaerobic membrane bioreactor treating starch wastewater.

Research output: Contribution to journalArticle

Abstract

For enhancing anaerobic membrane bioreactor (AnMBR) treating food processing wastewater due to speed-limited methanogenesis step, multiple effects of trace element (TE) supplementation on methanogenesis of a two-phase AnMBR were firstly investigated in batch tests. TE supplementation included individual element, combination and recovery of Fe, Ni, Co, Cu and Zn supplementation. Multiple effects of TE supplementation were highest stimulated by 22.4 ± 5.6 % (TE313) for chemical oxygen demand (COD) removal, 43.1 ± 12.5 % (TE303) for specific methanogenic activity (SMA) and 13.9 ± 3.7 % (TE405) for biomass growth, respectively, although only 7.5 ± 0.6 % (TE106) for methane production. Dosage of TEs played a critical role in methane production, COD removal and biomass growth of the AnMBR's methanogenesis. Low dosages of TE supplementation improved the COD removal and slightly stimulated the COD bioconverting to methane and biomass, but their specific methanation activities were inhibited in the initial rapid methanogenesis stage. Several methanation functional species were increased in abundance like Methanosarcina and Methanoculleus.

Details

Authors
  • Dawei Yu
  • Chao Li
  • Lina Wang
  • Junya Zhang
  • Jing Liu
  • Yuansong Wei
Organisations
External organisations
  • Chinese Academy of Sciences
  • Beijing Normal University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Water Treatment
Original languageEnglish
Pages (from-to)6631–6642
JournalApplied Microbiology and Biotechnology
Volume100
Issue number15
Publication statusPublished - 2016
Publication categoryResearch
Peer-reviewedYes