Biogas Production on Demand Regulated by Butyric Acid Addition

International Conference on Advances in Renewable Energy and Technologies 2016

Kasper, K.^1 ; Schiffels, J.^3 ; Krafft, S.^1 ; Kuperjans, I.^1 ; Elbers, G.^2 ; Selmer, T.^3

Institute NOWUM-Energy, FH Aachen - University of Applied Sciences, Heinrich-Mussmann-Str. 1, Juelich

52428, Germany^1

FH Aachen - University of Applied Sciences, Heinrich-Mussmann-Str. 1, Juelich

52428, Germany^2

Instituts of Nano- und Biotechnologies (INB), FH Aachen - University of Applied Sciences, Heinrich-Mussmann-Str. 1, Juelich

52428, Germany^3

关键词: Acid addition;    Biogas plants;    Biogas production;    Cattle manures;    Investigating effects;    Methane production;    Methane Yield;    Transient stimulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/32/1/012009/pdf
DOI  :  10.1088/1755-1315/32/1/012009

来源: IOP

【 摘 要 】

Investigating effects of volatile fatty acids on the biogas process it was observed that butyric acid can be used for transient stimulation of the methane production in biogas plants operating with low energy substrates like cattle manure. Upon addition of butyrate the methane output of the reactors doubled within 24 h and reached almost 3-times higher methane yields within 3-4 days. Butyrate was quantitatively eliminated and the reactors returned to the original productivity state within 3 days when application of butyrate was stopped. The opportunity to use butyrate feeding for increased biogas production on demand is discussed.