When looking for sustainable energy systems that are environmentally friendly, clean andrnversatile, Biogas plays a significant role. Moreover, converting food waste into Biogas helps torngenerate energy and reduce greenhouse gas emission by avoiding food waste from going tornlandfill since methane is a greenhouse gas, if it is not properly handled, can create globalrnwarming. Thus, finding an alternative energy sources that are efficient and environmentallyrnfriendly is a very challenging task. However, understanding the detail phenomena inside arnBiogas reactor helps to better use the full potential of Biogas. Thus, in this thesis, a detailedrnkinetics model has been performed. Besides, the model has been validated by usingrnexperimentally analysis. A Matlab code has also been developed to size biogas plants. Detailedrnultimate analysis and proximate of the food waste has been performed by using ultimate andrnproximate analyzer respectively. The data has been collected and measured to be 505 kg/dayrnfood waste from Ethiopian airlines different areas like food waste returned from different flightrnservices on the aircrafts, food waste from in-flight catering and food waste from the threerncafeterias. Based on the result, a total of 20.2m3/day biogas can be generated. Based on thernresult, the kinetic model has been validated by using experimental data. The result also show thatrnthe model can be used to know the real phenomena inside the reactor since the model fits withrnthe experimental data. Thus, by producing biogas from food waste, the food waste disposal canrnbe avoided and more than 119,000 Birr per month can be saved since Ethiopian airlines isrnspending this amount of money for cooking purpose. Thus, this research will solve the energyrnproblems of Ethiopian Airlines and the biogas could be upgraded to generate electricity that isrngoing to be used for various applications.rnKeywords: Kinetic Model, Experiment, Biogas, Food Waste