Foam suppression in overloaded manure-based biogas reactors using antifoaming agents

Panagiotis Kougias, Kanokwan Boe, Panagiotis Tsapekos, Irini Angelidaki

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

Foam control is an imperative need in biogas plants, as foaming is a major operational problem. In the present study, the effect of oils (rapeseed oil, oleic acid, and octanoic acid) and tributylphosphate on foam reduction and process performance in batch and continuous manure-based biogas reactors was investigated. The compounds were tested in dosages of 0.05%, 0.1% and 0.5% v/vfeed. The results showed that rapeseed oil was most efficient to suppress foam at the dosage of 0.05% and 0.1% v/vfeed, while octanoic acid was most efficient to suppress foam at dosage of 0.5% v/vfeed. Moreover, the addition of rapeseed oil also increased methane yield. In contrast, tributylphosphate, which was very efficient antifoam, was found to be inhibitory to the biogas process. © 2013 Elsevier Ltd.
Original languageEnglish
JournalBioresource Technology
Volume153
Issue number4
Pages (from-to)198-205
ISSN0960-8524
DOIs
Publication statusPublished - 2014

Keywords

  • Anaerobic digestion
  • Batch reactors
  • Foam control
  • Manures
  • Methane
  • Runway foaming
  • Saturated fatty acids
  • Vegetable oils
  • Biogas

Fingerprint

Dive into the research topics of 'Foam suppression in overloaded manure-based biogas reactors using antifoaming agents'. Together they form a unique fingerprint.

Cite this