Title: Peracetic acid oxidation as an alternative pre-treatment for the anaerobic digestion of waste activated sludge
Authors: Appels, Lise ×
Van Assche, Ado
Willems, Kris
Degrève, Jan
Van Impe, Jan
Dewil, Raf #
Issue Date: 2011
Publisher: Elsevier Applied Science
Series Title: Bioresource Technology vol:102 issue:5 pages:4124-4130
Abstract: Anaerobic digestion is generally considered to be an economic and environmentally friendly technology
for treating waste activated sludge, but has some limitations, such as the time it takes for the sludge to be
digested and also the ineffectiveness of degrading the solids. Various pre-treatment technologies have
been suggested to overcome these limitations and to improve the biogas production rate by enhancing
the hydrolysis of organic matter. This paper studies the use of peracetic acid for disintegrating sludge
as a pre-treatment of anaerobic digestion. It has been proved that this treatment effectively leads to a
solubilisation of organic material. A maximum increase in biogas production by 21% is achieved. High
dosages of PAA lead to a decrease in biogas production. This is due to the inhibition of the anaerobic
micro-organisms by the high VFA-concentrations. The evolution of the various VFAs during digestion
is studied and the observed trends support this hypothesis.
ISSN: 0960-8524
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Microbial and Molecular Systems - miscellaneous
Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section
Bioengineering Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
Technologiecluster Bioengineering Technologie
Sustainable Chemical Process Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
Sustainable Chemical Process Technology TC
× corresponding author
# (joint) last author

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