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Abstract

Understanding the densities of individual waste materials in landfills as a function of landfill overburden pressure can provide a means to estimate the space occupied by these materials when they are landfilled. A compression device was used to simulate the overburden pressures in a landfill to determine the densities associated with 14 material categories. The materials with the greatest density were food waste, yard waste, and glass, ranging from 1302 to 1865 kg m⁻³. The lowest density was associated with aluminum and steel/tin cans at 206 and 389 kg m⁻³, respectively. Some materials did not exhibit a large variation in density when the load increased, indicating that their density was mostly independent of the overburden pressure. The data gathered from this research can be used as lifecycle assessment impact categories, where the functional unit of interest is 1 tonne of a material and the impact is measured as m³ of landfill space occupied.

Keywords

Environmental impact factor municipal solid waste compaction landfill space density overburden pressure sustainable materials management

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Characterizing municipal solid waste component densities for use in landfill air space estimates

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