Alexandra Kowalczyk
Ruhr-University Bochum, Institute of Thermo and Fluid Dynamics, Bochum, Germany
Sebastian Schwede
Ruhr-University Bochum, Institute of Thermo and Fluid Dynamics, Bochum, Germany
Mandy Gerber
Ruhr-University Bochum, Institute of Thermo and Fluid Dynamics, Bochum, Germany
Roland Span
Ruhr-University Bochum, Institute of Thermo and Fluid Dynamics, Bochum, Germany
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http://dx.doi.org/10.3384/ecp1105748Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden
Linköping Electronic Conference Proceedings 57:7, s. 48-55
Publicerad: 2011-11-03
ISBN: 978-91-7393-070-3
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
Industrial biogas plants often do not operate in their optimum. To investigate limits of anaerobic digestion processes experiments are necessary. Economically it would be feasible to perform these tests at laboratory scale; if the tests could be transferred to industrial scale. This work presents a preliminary study; in which two different scales of laboratory digesters are compared and reproducibility of tests is investigated. Therefore; three identical glass digesters with a liquid volume of up to 22 liter and a steel-digester with a liquid volume of 390 liter were used. All digesters were started up with digestate from an industrial biogas plant; were fed with cow manure and corn cob mix; and were operated at the same process parameters like temperature; organic loading rate and retention time. Gas volumes were measured continuously. Twice a day the composition
of the biogas was analyzed. Dry matter and volatile solids were quantified once a week. The presented data show a good reproducibility between biogas plants of the same scale. The transferability to a bigger scale is in an acceptable range; but depending on the organic loading rate the deviation between the different scales varies.
[1] L. Brunn; C. Dornack; B. Bilitewski; Application of laboratory scale experiments to industrial scale in case of anaerobic waste treatment; Fresenius Environmental Bulletin 18 (2); 2009; pp. 196-203
[2] G. Gallert; A. Henning; J. Winter; Scale-up of anaerobic digestion of the biowaste fraction from domestic wastes; Water Research 37; 2003; pp. 1433-1441.
doi: 10.1016/S0043-1354(02)00537-7.
[3] DIN EN 12879; Characterization of sludges - Determination of the loss on ignition of dry mass; 2001
[4] DIN EN 12880; Characterization of sludges - Determination of dry residue and water content; 2001
[5] A. Aivasidis; C. Wandrey; Development and Scaleup of a high-rate biogas process for treatment of organically polluted effluents; Annals of the New York Academy of Sciences 589; 1990; pp 599-615.
doi: 10.1111/j.1749-6632.1990.tb24274.x.
