publication . Conference object . 2013

Foaming in manure based digesters: Effect of overloading and foam suppression using antifoam agents

Kougias, Panagiotis; Tsapekos, Panagiotis; Boe, Kanokwan; Angelidaki, Irini;
Open Access English
  • Published: 01 Jan 2013
  • Country: Denmark
Anaerobic digestion foaming is one of the major problems that occasionally occur in full-scale biogas plants, affecting negatively the overall digestion process. The foam is typically created either in the main biogas reactor or/and in the pre-storage tank and the entrapped solids in the foam cause severe operational problems, such as blockage of mixing devices and collapse of pumps. Furthermore, the foaming problem is linked with economic consequences for biogas plants, due to income losses derived from the reduced biogas production, extra labour work and additional maintenance costs. Moreover, foaming presents adverse environmental impacts owing to the overflo...
free text keywords: Foaming, Anaerobic digestion, Antifoam agents, Oeganis overloading
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