Title: Effects of ultrasonic pre-treatment on the sludge characteristics and anaerobic digestion
Authors: Appels, Lise ×
Houtmeyers, Sofie
Van Mechelen, Floriaan
Degrève, Jan
Van Impe, Jan
Dewil, Raf #
Issue Date: 2012
Publisher: Pergamon Press
Series Title: Water Science and Technology vol:66 issue:11 pages:2284-2290
Abstract: In this work, the influence of ultrasonic pre-treatment on anaerobic digestion is studied. Attention is paid to the solubilisation of the main organic (proteins, carbohydrates) and inorganic (heavy metals) sludge components during ultrasonic treatment and the influence of the dry matter content on the degree of solubilisation. The second part of the paper focuses on the relationship between the applied specific energy of the ultrasonic treatment and methane production. In general, a higher specific energy and a higher dry matter content are beneficial for the release of organic matter, resulting in an increased methane production. The efficiency of the subsequent anaerobic digestion is similar for both sludge types (2.1 and 3.2 % DM). However, at lower DM contents (2.1%), the methane production increase was more significant.
ISSN: 0273-1223
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section
Department of Health and Technology - UC Leuven
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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