Design of air quality measurement system

Electricity production from geothermal energy sources in Turkey has increased significantly in recent years. Especially in the Aegean Region, Aydın is in a leading position in this subject. Geothermal energy has positive environmental effects compared to fossil fuels however some negative environmental effects are observed during the installation and energy production processes. Gases such as Hydrogen sulfide(H2S), Carbon dioxide(CO2), Ammonia, Argon(Ar) and Radon(Rn) released into the atmosphere from geothermal sources are among the important parameters affecting air quality. This study which was conducted in Aydın' s Efeler district involved the measurement of climate variables like temperature, humidity, pressure, rainfall, and carbon monoxide by using sensors and the design of an air quality measurement system facilitated daily data collection generating forty-eight data sets per day. The measurements performed are uploaded to Google tables in the cloud environment by using ESP32. The measurements were averaged daily for the analyses. In this study, the air quality measured from February 2023 to September 2023 between climate variables affecting quality and hydrogen sulfide (H₂S) concentration relationships were examined. The effects of these variables on hydrogen sulfide were analyzed by Pearson correlation measures and multiple linear regression methods. As a result of the analysis, there was a negative correlation between H2S and temperature and a significant relationship, while the humidity variable has a positive correlation and a significant relationship is detected. But there was not a significant relationship between H2S data with pressure and carbon monoxide with rainfall data. Key words: Air quality, Geothermal Energy, Hydrogen Sulfide (H₂S)