Determination of Household Green Waste Fractions to Methane and its Economic Value

Abstract

The methane gas produced at the landfills has become one of the main causes of the global warming. On the other hand, solid waste has potentials as a new energy. One of the well-known methods in processing solid waste into a new energy is methanation or anaerobic fermentation process. This paper considers calculation of the solid waste fraction of green waste that can be released as methane from traditional market. The gas volume is measured by using U-pipe filled with water. The difference of water height in the U-pipe is used to calculate the formed biogas volume used to calculate the weight fraction of the methane and amount of profit which can be generated from the solid waste processing by using anaerobic fermentation. The profits are obtained from the use of methane as the source of electricity energy and the profit of selling compost from the fermented trash residue. The results of this research show that the solid waste fraction which can be released as methane has the value range 0.11% - 0.18%, the benefits that can be generated from anaerobic process for organic solid waste are 300,899,290.00 IDR annually for electricity energy and 24,432,222,254.00 IDR annually for compost.