The goal of this study is to develop an inexpensive, environmentally friendly, and improvised air ionizer-purifier using an Arduino interface and lemon peels to lessen indoor pollution. In Qatar, air ionizers and purifiers are crucial because they aid in reducing respiratory-related ailments during the pandemic by removing airborne bacteria. Indoor air pollution still exists even in clean homes in Qatar since the country's air pollution exceeds health guidelines and harms the population. The open-source electronics platform Arduino Interface, which is built on simple hardware and software, was utilized for its boards to read inputs and convert them into outputs for the detection of air contaminants. Likewise, Lemon peels, which have cleansing properties, were employed as the primary ingredient to manufacture the activated carbon required to increase the effectiveness of the air purification process. The homemade air ionizer and purifier remove airborne impurities and produce negative ions. It, therefore, consisted of three main parts. The study's findings demonstrate the air purifier's arrestance and dust-holding capacity. The effectiveness of the air ionizer was also demonstrated by the quantity and quality of negative ions created. The sensor was also put to the test over time. The outcomes showed that the improvised air ionizer-purifier produced clean air in a manner comparable to that of a commercial air purifier, improving environmental safety through its efficiency and response time.

Keywords : Air Ionizer; Air Purifier; Arduino Interface; Indoor Air Pollution; Lemon Peels.