PABRIK BIOMETHANE DARI SAMPAH KOTA KAPASITAS BAHAN BAKU 90.000 TON/TAHUN

• Main Authors: , NANDA PRAWIRA A., , Ir. Siti Syamsiah Ph.D.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2010
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/127617/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=67881
• Institution: Universitas Gadjah Mada

Biomethane plants from municipal solid waste was designed with capacity 90,000 tons solid waste per year and operate for 330 days a year. Biomethane as the main product can be used as fuel gas for vehicles as well as fuel for electricity generation. The manufacturing process by following these steps: separation processes municipal solid waste into organic and inorganic waste, and then organic waste went through anaerobic digestion process inside the reactor to produce biogas and biogas upgrading process using water scrubbing process (absorption by water) to produce biomethane . Degradation process in the reactor takes place in an anaerobic environment or no oxygen exist. The temperature inside the reactor is maintained at 40 o C which is still classified at mesophilic temperature range (30-40 o C), because the exothermic reaction takes place in the reactor cooling coil is added by using cooling water. Factory is planned to be located in areas Piyungan, Yogyakarta, on the land of 15,000 m 2 (1.5 ha). Utilities required are as much as 64066.90 kg / hr water, 1649.50 kVA electricity and 431.03 m 3 /hr of compressed air. From the calculation of economic evaluation results obtained by fixed capital investment, FCI = US $ 4,447,840.91 + Rp 22.860.029.406,72, working capital, WC = US $ 1,913,663.48 + Rp 9,446,911,588.44, profit before tax of Rp 20,199,495,131.07 per year , profit after tax of Rp 10,099,747,565.54 per year, return on investment before taxes = 32.12%, return on investment after taxes = 16.06%, payout time before taxes = 2.49 year, pay out time after taxes = 4.16 years, break even point, the BEP = 48.57%, shut down point, SDP = 29.82%, discounted cash flow rate of return, DCFRR = 28.1%. Based on the calculation above, the biomethane plant with a capacity of 90,000 tons of raw material / year should be studied further.