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Waste to energy now become one of the technology solution that is in many developed Â countries, in an effort to reduce greenhouse gas emissions from waste. Urban organicÂ waste is a potential source of greenhouse gases. Methane gas is an energy sourceÂ that can be used as fuel. It is difficult to find land for Landfill alocation in the major citiesÂ and often becomes a difficult social problem. Structured Landfill Cell is used to treat theÂ waste at the landfill, with the aim to use land more scalable, easier waste managementÂ and control, better sanitation, better water control leachate and gas produced can be
managed optimally and compost can be utilized with the production and quality control.This new system was first used in Indonesia by PT Navigats Organics Energy Indonesia inÂ landfill Suwung, Denpasar, Bali. There are 5 cells already built in Suwung and two of cellsÂ have been filled with garbage. Each cell contains 12,000 m3 soliswaste. ObservationsÂ carried out on gas productivity of two cells that have been filled, with a dry treatment onÂ cell 1 (dry cell) and a wet treatment in cell 2 (wet cell). The observed gas is CH4, CO2,
and O2 as the main parameters, with the addition parameters are CO and H2S. TheÂ instrument used is the GA 2000 Plus. Observations of two cells made for 4 months, withÂ the content of CH4 around 40 to 50% in the first month and gradually decreased to reachÂ 18 to 25% in the fourth month. Carbondioxyde going up and down following condition ofÂ CH4 and its value ranges between 16 and 28%. Oxygen consentration around 2 to 14%.For keeping engine performance the consentration of methane should more than 28%
and O2 content lower than 6%. Cell with watering will temporarily reduce CH4 and CO2Â and O2 increase, but it is slowly rising again. Carbonmonoside values tend to increaseÂ with age garbage (10 sd 350 ppm), whereas irregular H2S values ranging 0 up to 24Â ppm, allegedly associated with the low protein content in the trash. Sewage treatmentÂ system is proven to increase CH4 gas, yet still needed modifications of structure andÂ the gas collector pipe system so that productivity can be improved.
Key Words : Solidwaste, Metana, Cell System
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