محسن نصرتی - Biotechnology Group, Department of Chemical Engineering, Tarbiat Modarres University, Tehran, Iran
Sreekrishnan - Department of Biochemical Engineering and Biotechnology Indian Institute of Technology, Delhi
Shojosadati - Biotechnology Group, Department of Chemical Engineering, Tarbiat Modarres University, Tehran, Iran

Anaerobic digestion of waste food (discarded food) was studied under thermophilic temperature conditions. Samples were prepared with and without the overlying layer of fat derived from the waste food. At solids concentrations less than 20 g/l no significant difference was observed, in terms of volatile fatty acids concentrations and methane production, between samples containing the fat and samples without it. Biogas released from a 50 g/l fat excluded sample was 100% more than the gas generated from the fat included sample with the same initial solids concentration.

Thermophilic anaerobic digestion, waste food, volatile fatty acids, Biogas production