Title
Enhanced biomethanation of kitchen waste by different pre-treatments Enhanced biomethanation of kitchen waste by different pre-treatments
Author
Faculty/Department
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Barking ,
Subject
Biology
Engineering sciences. Technology
Source (journal)
Bioresource technology. - Barking
Volume/pages
102(2011) :2 , p. 592-599
ISSN
0960-8524
ISI
000286782700022
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Five different pre-treatments were investigated to enhance the solubilisation and anaerobic biodegradability of kitchen waste (KW) in thermophilic batch and continuous tests. In the batch solubilisation tests, the highest and the lowest solubilisation efficiency were achieved with the thermo-acid and the pressuredepressure pre-treatments, respectively. However, in the batch biodegradability tests, the highest cumulative biogas production was obtained with the pressuredepressure method. In the continuous tests, the best performance in terms of an acceptable biogas production efficiency of 60% and stable in-reactor CODs and VFA concentrations corresponded to the pressuredepressure reactor, followed by freezethaw, acid, thermo-acid, thermo and control. The maximum OLR (5 g COD L−1 d−1) applied in the pressuredepressure and freezethaw reactors almost doubled the control reactor. From the overall analysis, the freezethaw pre-treatment was the most profitable process with a net potential profit of around 11.5 ton−1 KW.
E-info
https://repository.uantwerpen.be/docman/iruaauth/a573ea/b8a063a77e7.pdf
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Handle