ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Simulation of aerobic landfill in laboratory scale lysimeters — effect of aeration rate
Radoslaw Slezak, Liliana Krzystek, and Stanisław Ledakowicz
Department of Bioprocess Engineering, Technical University of Lodz, Faculty of Process and Environmental Engineering, Wolczanska 213, 90-924 Lodz, Poland
Received: 8 June 2009 Revised: 2 November 2009 Accepted: 10 November 2009
Abstract: Aeration of municipal landfills contributes to the acceleration of organic matter degradation and to the decrease of pollutant
emission into air, water, and soil. Biodegradation of organic matter present in municipal waste, deposited in a landfill,
by microorganisms under anaerobic conditions is a slow process. The aim of the study was to carry out simulations of an aerobic
landfill in lysimeters, to determine the influence of aeration rate on the degradation of organic matter present in landfills,
and to formulate a mathematical model defining the changes of carbon content in leachate and in gas produced. In this work,
simulation of aerobic landfill leachate degradation was carried out in laboratory scale lysimeters with the working volume
of 15 L. The changes of BOD5, COD, and ammonium nitrogen concentration during aeration were similar for all aeration rates.
During aeration, the BOD5 index decreased by 99.9 %, COD decreased by 95.1 %, and ammonium nitrogen concentration by 93 %.
The proposed kinetic model defines the processes of organic carbon content changes in simulated leachate and the quantity
of carbon dioxide for aerobic landfill simulation quite well.
Keywords: aeration - lysimeter - leachate - waste - aerobic landfill
Full paper is available at www.springerlink.com.
Chemical Papers 64 (2) 223–229 (2010)