SENDY JONATHAN, - Utilization of Biogas from Rice Straw Waste into Electrical Energy to Drive Rice Grain Machines. PROtek : Jurnal Ilmiah Teknik Elektro. ISSN e-ISSN: 2527-9572 / ISSN: 2354-8924

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Abstract

Rice plants are a significant contributor to rice production and serve as the primary source of food in Indonesia. With the increase in rice harvests, the issue of rice plant waste, specifically rice straw, becomes prominent. Rice straw waste is frequently burned after the rice harvest, leading to the release of toxic gases and particles into the air, causing air pollution and posing public health problems. Additionally, most grain processing processes still rely on diesel engines fueled by oil. This research aims to harness the potential of biogas from rice straw waste through anaerobic fermentation, utilizing mathematical calculations. Subsequently, an analysis of the potential electrical energy that can be generated is conducted, along with an examination of the costs associated with various components of biogas utilization. The research results show that 4,800,000 kg of rice straw waste per year can produce a biogas potential of 576,000 m³/year. The electrical energy potential of 3,513,600 kWh/year is sufficient to operate a biogas plant as an electrical energy generator for grain processing operations in Koto Laweh Village, running 12 hours every day and producing a total of 240 kWh of electrical energy. This process involves using 960 kg of rice straw waste and an additional 6.5 kg of urea. The estimated cost of components for utilizing rice straw waste reaches Rp. 112,318,925, demonstrating a significant potential for cost savings compared to conventional fuel sources. Keywords: anaerobes, rice straw, biogas, electricity

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