Aerobic biodegradation of a mixture of monosubstituted phenols in a sequencing batch reactor

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

A sequencing batch reactor (SBR) was inoculated with p-nitrophenol-degrading activated sludge to biodegrade a mixture of monosubstituted phenols: p-nitrophenol (PNP), PNP and o-cresol; and PNP, o-cresol and o-chlorophenol. Settling times were progressively decreased to promote biomass granulation. PNP was completely biodegraded. The PNP and o-cresol mixture was also biodegraded although some transitory accumulation of intermediates occurred (mainly hydroquinone and catechol). o-Chlorophenol was not biodegraded and resulted in inhibition of o-cresol and PNP biodegradation and complete failure of the SBR within a few days. The biomass had very good settling properties when a settling time of 1min was applied: sludge volume index (SVI5) below 50mLg-1, SVI5/SVI30 ratio of 1 and average particle size of 200μm. © 2013 Elsevier B.V.
Original languageEnglish
Pages (from-to)563-568
JournalJournal of Hazardous Materials
Volume260
DOIs
Publication statusPublished - 5 Sep 2013

Keywords

  • Aerobic biodegradation
  • Sequencing batch reactor
  • o-Chlorophenol
  • o-Cresol
  • p-Nitrophenol

Fingerprint

Dive into the research topics of 'Aerobic biodegradation of a mixture of monosubstituted phenols in a sequencing batch reactor'. Together they form a unique fingerprint.

Cite this