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Effect of organic loading rate and feedstock composition on foaming in manure-based biogas reactors

Authors
Publisher
Elsevier BV
Publication Date
Keywords
  • Foaming Is One Of The Major Problems That Occasionally Occur In Biogas Plants
  • Affecting Negatively The Overall Digestion Process
  • In The Present Study
  • The Effect Of Organic Loading Rate (Olr) And Feedstock Composition On Foaming Was Elucidated In Cont
  • By Stepwise Increasing The Olr And The Concentration Of Proteins Or Lipids In The Substrate
  • Foaming In Biogas Reactors Was Investigated
  • No Foam Formation Was Observed At The Olr Of 3
  • 5
  • G Volatile Solids/(L-Reactor·Day)
  • Organic Loading Was The Main Factor Affecting Foam Formation In Manure Digester
  • While The Organic Composition
  • Such As Content Of Proteins Or Lipids Were Factors That In Combination With The Organic Loading Were
  • More Specifically
  • Gelatine Could Initiate Foam Formation At A Lower Olr Than Sodium Oleate
  • Moreover
  • The Volume Of Foam Produced By Gelatine Was Relatively Stable And Was Not Increased When Further Inc
  • © 2013 Elsevier Ltd
Disciplines
  • Biology

Abstract

Effect of organic loading rate and feedstock composition on foaming in manure-based biogas reactors - DTU Orbit (23/05/14) Effect of organic loading rate and feedstock composition on foaming in manure-based biogas reactors - DTU Orbit (23/05/14) Effect of organic loading rate and feedstock composition on foaming in manure-based biogas reactors Foaming is one of the major problems that occasionally occur in biogas plants, affecting negatively the overall digestion process. In the present study, the effect of organic loading rate (OLR) and feedstock composition on foaming was elucidated in continuous reactor experiments. By stepwise increasing the OLR and the concentration of proteins or lipids in the substrate, foaming in biogas reactors was investigated. No foam formation was observed at the OLR of 3.5. g volatile solids/(L-reactor·day). Organic loading was the main factor affecting foam formation in manure digester, while the organic composition, such as content of proteins or lipids were factors that in combination with the organic loading were triggering foaming. More specifically, gelatine could initiate foam formation at a lower OLR than sodium oleate. Moreover, the volume of foam produced by gelatine was relatively stable and was not increased when further increasing either OLR or gelatine concentration in the feed. © 2013 Elsevier Ltd. General information State: Published Organisations: Department of Environmental Engineering Authors: Kougias, P. (Intern), Boe, K. (Intern), Angelidaki, I. (Intern) Keywords: (Anaerobic digestion, Biogas, Feedstocks, Lipids, Proteins, Runway foaming, Loading) Pages: 1-7 Publication date: 2013 Main Research Area: Technical/natural sciences Publication information Journal: Bioresource Technology Volume: 144 ISSN (Print): 0960-8524 Ratings: FI (2012): 2 ISI indexed (2012): yes FI (2011): 2 ISI indexed (2011): yes FI (2010): 2 FI (2009): 2 FI (2008): 2 Original language: English DOIs: 10.1016/j.biortech.2013.06.028 Source: dtu Source-ID: n:

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