This study was performed in a sanitary landfill located at the Asian side of Istanbul, Turkey. The Komurcuoda landfill is about 20 year old and represents an example of modern, welloperated
site, in which domestic solid wastes and industrial wastes are accepted into separate cells. The closed section of the landfill (cLF) is about 45 ha with >20 million tons of municipal solid waste landfilled between the years 1995–2011. The maximum waste depth at cLF and aLF is approximately 60 m and 40 m, respectively.All surface at both landfills is covered with good quality clay layer(1–3 m) to prevent additional water infiltration and oxygen intrusion
to maximize landfill gas collection efficiency. The whole cLF is subjected to active landfill gas extraction. On the other hand, 10 ha is available for gas extraction at the active landfill section (aLF) in which landfilling is still ongoing. Extracted landfill gas from both sections is used for electricity production by reciprocating engines in a plant having an installed capacity of almost 20MWe according to data from the year 2015. Waste is currently being deposited at an annual rate of 2 million tons. It is estimated that around 8 million tons solid waste is already landfilled between the years 2012–2015. Fresh waste is being separated in a sorting and recycling facility having a capacity of around 2000 t/d. Several materials such as plastic, paper and metals are recycled at this plant operated by a Turkish-Italian private company.