Nowadays, we are facing a serious issue called Indoor Air Pollution. In fact, CO2 is the fourth most abundant gas in the earth's atmosphere. The increasing amount of carbon dioxide, CO2, leads to many health problems . Currently, there are three solutions that show positive results in reducing CO2 level in the closed room context: Polyethylenimine (PEI) , N-methyldiethanolamine (MDEA) , and Diethanolamine (DEA) . This study tested the effect of PEI, MDEA, and DEA in absorbing CO2 by using a Vernier sensor to measure the amount of CO2. Each chemical was absorbed at different temperatures after 600s. Experiments showed that MDEA and DEA are very effective in scrubbing CO2 from the atmosphere at optimal temperature. However, during the testing process, it is found that MDEA is more sensitive to CO2 than DEA in higher temperatures. Therefore, MDEA is an ideal substance that can be used as a CO2 absorbent in devices or ventilators designed to improve indoor air quality.
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