Pembuatan Gas Metana dengan Proses Fermentasi Termofilik Limbah Cair Tapioka dengan Kapasitas Bahan Baku 35.500 Ton/Tahun

Abstract

Methane is a hydrocarbon gas of mostly natural origin produced by the anaerobic decomposition of organic materials. Methane is used as a fuel source which has the same potential as LPG and has more potential than other fuels. Methane gas can be used as a heat source in the cooking process. Methane gas also has a role in the electricity generation process, where methane gas is used as fuel to drive electric motors which will produce electrical energy, so that this potential can be utilized to set up methane gas plants to meet the needs of various industries for raw materials. The main objective of this factory design is to apply the discipline of chemical engineering, so that it will provide an overview of the feasibility of establishing a methane gas factory and designing a methane gas production process directly from liquid waste. Preliminary Methane Gas using a Thermophilic Fermentation Process for Liquid Tapioca Waste with a Raw Material Capacity of 35,500 Tons/Year. The main process in this factory design consists of two stages, namely the fermentation stage and the methane gas separation stage. The plant will be planned to be established in Way Bungur District, East Lampung Regency, East Nusa Tenggara Province with a land area of 10,000 m2; the required labor is 108 people with a business entity in the form of a limited liability company led by a director with a line and staff organization system. The establishment and operation of the plant required capital investments of Rp. 119.905.291.233,00 and total production costs of Rp. 77.193.734.809,00. Based on economic analysis, the plant has a PM of 42,340%, BEP of 52,250%, ROI of 34,469%, RON of 57,448%, POT for 2,75 years, and IRR of 26,449%. From the results of economic analysis, it can be concluded that the Preliminary Methane Gas using a Thermophilic Fermentation Process for Liquid Tapioca Waste with a Raw Material Capacity of 35,500 Tons/Year is feasible.