Bota, Gaudentius Indra Ardhanu (2026) Sistem Monitoring Konsentrasi Gas Metana (CH4) dan Karbon Dioksida (CO2) di Wonorejo Kompos Center. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The management of organic waste through composting is an important strategy to reduce the amount of waste sent to final disposal sites. However, the decomposition process of organic materials can generate greenhouse gas emissions, particularly methane (CH₄) and carbon dioxide (CO₂), which may pose environmental and health risks if not properly monitored. Therefore, a reliable and continuous gas monitoring system is required to support environmentally sustainable waste management. This study aims to design and implement an Internet of Things (IoT)based monitoring system to measure methane (CH₄) and carbon dioxide (CO₂) concentrations at the Wonorejo Compost Center. The developed system utilizes an ESP32 microcontroller as the main control unit, an MQ-4 sensor for methane detection, and an MQ-135 sensor for carbon dioxide detection. Measurement results are displayed in real time on an LCD screen and transmitted automatically to Google Sheets via a WiFi connection as a cloud-based data storage platform. Data collection was conducted over a two-week period with a four-hour measurement interval throughout a 24-hour cycle. To evaluate system accuracy, sensor readings were compared with laboratory test results obtained using Gas Chromatography (GC) and standard gas analysis. The results indicate that the proposed monitoring system operates reliably and consistently in detecting CH₄ and CO₂ concentrations. The observed CO₂ levels showed variations influenced by microbial decomposition activity, while CH₄ concentrations remained relatively low, indicating that the composting process predominantly occurred under aerobic conditions. The developed system is considered effective as a real-time monitoring tool for greenhouse gas emissions in organic waste processing facilities.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | Gaudentius Indra Ardhanu Bota | ||||||||
| Date Deposited: | 27 Feb 2026 02:42 | ||||||||
| Last Modified: | 27 Feb 2026 05:42 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/49928 |
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