TINJAUAN TERMODINAMIKA PROSES PEMBENTUKAN METANA HIDRAT DALAM MEDIA KARBON BERPORI

• Main Authors: , Wibiana Wulan Nandari, Ir. Imam Prasetyo M.Eng., Ph.D.
• Format: Thesis
• Language: unknown
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD; Methane hydrate
• Online Access: https://repository.ugm.ac.id/126038/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=66228

Methane is a potential alternative energy source which is abundant and produces lower CO2 emissions when it is used as fuel due to the content of C in the methane molecule is much lesser than its H content. Besides in a form of gas, methane in nature can also be in the form of methane hydrates. The formation process of methane hydrates in nature can be adopted as a method of storage of methane. In this study, a thermodynamics review will be studied related to temperature and pressure in a phase equilibrium system of methane hydrate . Thermodynamic model aims to predict the stability of methane hydrates for effective storage of methane. Each volume of methane hydrate contains as 164 volumes of methane gas under standard conditions ( STP ) . The study was conducted by adsorbing methane on a wet porous carbon with the method of static volumetric. Adsorption system was conditioned at the temperature of 274 K , 275 K , 276 K and 277 K. Methane gas is injected into the clean vacuum system, at various pressures . the adsorption equilibrium was Indicated by stable pressure in the adsorption system . Moles of methane adsorbed was calculated from the difference of mole before and after adsorption.The Pressure when methane hydrate formed can be seen from the point where the number of moles of methane adsorbed increased significantly . The experimental results show that at the temperature of 274 K methane hydrates was formed at a pressure of 2.75 MPa