IMPROVEMENT OF INDOOR AIR QUALITY IN REDUCING THE AMOUNT OF CO2 (CARBON DIOXIDE) USING INDOOR FLOATING GARDEN

Abstract

This study aims to evaluate the effectiveness of an Indoor Floating Garden (IFG) system in improving indoor air quality by reducing carbon dioxide (CO₂) concentration, in alignment with the principles of green engineering in the field of Mechanical Engineering. The IFG system was designed as a modular, water-based floating plant installation with existing aquarium placed in a indoor space measuring 20 m². CO₂ concentrations were monitored over a 7-day period using anemometer, with measurements recorded every 3 hours within 8:00 am to 5:00pm respectively. A control room without the IFG system was used for comparative analysis. The results showed that the IFG system successfully reduced average CO₂ concentrations by 23.4% compared to the control room, with a maximum daily reduction of up to 227 ppm. Plants such as Epipremnum aureum was identified as key contributors to CO₂ absorption through active photosynthesis on the water surface. Overall, the use of IFG as a passive approach to indoor CO₂ control presents significant potential in green engineering applications. This innovation not only contributes to the sustainable enhancement of indoor air quality but also offers integration possibilities in modern building designs to reduce reliance on energy intensive mechanical ventilation systems.