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Volume no. 5 | 2025/10
Issue no. 1


Title
GAS’EM: SMALL-SCALE BIOGAS DIGESTER WITH MONITORING AND REGULATING SYSTEM
Author
Regeena Cazandra M. Buan, Carl Jeff Gabriel J. Fabregas, Lance Benedict F. Salazar, Christian Jermhel S. Solis, Mrs. Joylyn D. Lumbera, LPT
Views: 398 Cited: 1
Downloads: 3
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Abstract
This study addresses the growing challenge of organic waste management driven by rapid urbanization and population growth. Many existing biogas digester systems, which offer a sustainable solution to the global organic waste problem, lack proper monitoring and regulating mechanisms, leading to inefficiencies and abandonment, especially in rural areas. This study proposes a small-scale biogas digester with integrated monitoring and regulating systems. It incorporates the Adafruit LPS35HW and DS18B20 Digital Sensors to track changes within the digester and an ESP8266 module, which connects to a Sigfox cloud server to provide real-time updates displayed on the user’s device about the anaerobic status. The present study uses a descriptive-comparative, quantitative design, wherein the researchers distributed online questionnaires to 45 engineers from Batangas City. To test the hypothesis, various statistical methods were used, including ranking, weighted mean, composite mean, and ANOVA. Results showed that the perceptions of the selected respondents are not statistically different from one another regarding the Biogas Digester design in terms of maintenance, mechanism, and functionality. The respondents valued the protection of electronic components from pressure fluctuations, easy accessibility for cleaning and repairs, and use of durable materials to minimize maintenance costs. In terms of mechanism, they strongly agreed that the systems could measure key parameters, handle common organic waste, and adapt to various environmental conditions. For functionality, they highlighted precise monitoring enabled by sensor integration, ease of use with minimal user intervention, and the clarity of indicators alongside the design's cost-effectiveness. By addressing critical design flaws and initiating monitoring solutions, this study enhances organic waste management and biogas production. The proposed design aligns with the Sustainable Development Goals (SDGs) 7, 12, and 13, promoting clean energy, responsible consumption, and climate action.
Keywords
Organic Waste, Biogas, Digester, Anaerobic Digestion, Internet of Things (IoT), Monitoring System, Regulating System, Energy Production
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