Determination of landfill gas by using methematical models

In the year of 2012, the landfilling is the most common solid waste disposal method both in the world and in Turkey. Developed and improved waste processing techniques such as composting, gasification, and incineration has started to be used after 1980s, especially in developed countries, but still not widespread. Because landfilling is the simplest and the most economically available method among the others with its low initial investment and operational costs.In the content of the thesis, as initial steps; the properties of MSW are introduced followed by the presentation of landfilling techniques, reactions occur in the waste body, and leachate production. Then, LFG generation and kinetics are given followed by LFG mathematical modeling. Four different LFG generation models are introduced in this part of the study.A case study is included to the thesis; the determination of LFG capacity of the Harmandali landfill site in Izmir-Turkey. This landfill has 90 ha of area and has been operated since 1992. The site will be closed by the end of 2014. For this purpose, the composition and characteristics of Izmir MSW is obtained, and used for the calculation of the model variables of k and L0. The studied LFG models were operated with obtained variables and the results are compared and discussed.