LIVED EXPERIENCES OF THE SELECTED RESIDENTS IN BELGRADE, SERBIA IN LIQUID 3 AS AN AIR PURIFIER TO REDUCE AIR POLLUTION

Abstract

Liquid 3 is an urban photo-bioreactor that utilizes microalgae to efficiently remove carbon dioxide (CO₂) and produce oxygen (O₂) and biomass. It functions similarly to a tree by converting CO₂ into oxygen and also serves additional purposes such as a bench, a phone-charging station, and a solar-powered unit at night (Bojic, 2021). Many countries are currently facing the problem of tree loss, often due to limited space available for tree planting. This challenge led scientists in Serbia to develop Liquid 3. However, there is a lack of studies focusing on the experiences of residents living in Serbia regarding the use of Liquid 3. Hence, this study aimed to explore the lived experiences of selected residents in Belgrade, Serbia in using Liquid 3 as an alternative air purifier to reduce air pollution. This study employed a qualitative research approach, specifically a phenomenological research design, to determine the lived experiences of selected residents in Belgrade, Serbia. Participants were selected using non-probability sampling techniques, including snowball sampling and purposive sampling. Data were collected through online semi-structured interviews supported by audio recordings. The gathered data were thoroughly analyzed and interpreted. The findings revealed that selected residents in Belgrade, Serbia had physically encountered Liquid 3 and reported experiencing a refreshing sensation due to its air-purifying effects. The study further found that Liquid 3 is beneficial in reducing and mitigating air pollution and improving air quality. Additionally, participants suggested that Liquid 3 could be improved by increasing its quantity, placing it in areas without trees, enhancing its design and appearance, incorporating more renewable energy sources, and reducing its cost. The results demonstrate that Liquid 3 can serve as an alternative air purifier to reduce air pollution. This innovative technology introduced in Belgrade, Serbia contributes to air purification and pollution mitigation. To maximize its benefits, Liquid 3 may be further developed by increasing its availability, improving cost efficiency, and enhancing its effectiveness in terms of location placement, design, and energy utilization.