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Waste Management & Research, Vol. 25, No. 6, 524-537 (2007)
DOI: 10.1177/0734242X07079148

Compartment model of aerobic and anaerobic biodegradation in a municipal solid waste landfil

Sang-Yul Kim

Division of Solid Waste, Resources and Geoenvironmental Engineering, Graduate School of Engineering Hokkaido University, Sapporo, Hokkaido, Japan

Yasumasa Tojo

Division of Solid Waste, Resources and Geoenvironmental Engineering, Graduate School of Engineering Hokkaido University, Sapporo, Hokkaido, Japan, tojo{at}eng.hokudai.ac.jp

Toshihiko Matsuto

Division of Solid Waste, Resources and Geoenvironmental Engineering, Graduate School of Engineering Hokkaido University, Sapporo, Hokkaido, Japan

The mathematical formulations in a one-dimensional compartment model of the biodegradation of organic landfill components are described. The model is designed to switch between anaerobic and aerobic conditions, depending on the local oxygen concentration. The model also includes the effect of environmental factors, such as moisture content, pH, and temperature, on reaction rates. The model includes not only biodegradation processes for carbon compounds (acetate, CO2, CH4), but also for nitrogen compounds involved in nitrification and denitrification due to their significance in landfills. Two example runs to simulate anaerobic and aerobic waste were conducted for a single landfill unit cell by changing the organic content and diffusion coefficient.

Key Words: Biodegradation • gas and leachate • pH • simulation model • solid waste landfill • transport • wmr 1013—2


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