Nurfarikha, Elza Dianis (2025) Analisis Persebaran Gas SO₂ dalam Ruangan di Industri Pupuk dan Pestisida menggunakan Sensor MQ-136 Berbasis IoT dan Simulasi CFD. Undergraduate thesis, UPN "Veteran" Jawa Timur.
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Abstract
The fertilizer and pesticide industry has the potential to produce sulfur dioxide (SO₂) emissions that can harm the health of workers and the environment. This study aims to analyze SO₂ gas levels periodically every hour using an IoT -based MQ-136 sensor, analyze the spatial distribution of SO₂ gas using the Computational Fluid Dynamics (CFD) approach, and evaluate the suitability of SO₂ levels with the quality standards of Permenaker No. 5 of 2018. Measurements were taken continuously for 24 hours at 1-hour intervals in an industrial fertilizer production room in Bojonegoro. SO₂ concentration data along with meteorological parameters (temperature, humidity, wind speed and direction) were recorded in real time via the Blynk platform. The data were then converted into mass emission rates and simulated using SimScale with the k-ω SST turbulence model to produce a heatmap visualization of spatial distribution. The results of the study show temporal fluctuations with the highest concentration of 1.056 ppm at 11:00 a.m. and the lowest of 0.238 ppm at 3:00 a.m. The CFD heatmap visualization identified the highest SO₂ in the area of the production with limited ventilation. All measurement data showed that the SO₂ level was still below the quality standard of Permenaker No. 5 of 2018 (2 ppm for 8-hour exposure), with the highest concentration reaching 52.8% of the permitted NAB. This study emphasizes the importance of real-time monitoring systems, ventilation system optimization, and temporal-based control strategies to minimize SO₂ exposure in enclosed industrial environments. Keywords: sulfur dioxide, CFD, IoT, MQ-136 sensor, spatial distribution, fertilizer industry, air quality standards
| 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: | Elza Dianis Nurfarikha | ||||||||
| Date Deposited: | 04 Dec 2025 04:26 | ||||||||
| Last Modified: | 04 Dec 2025 05:42 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/47719 |
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