Using plants to improve indoor air quality is recognized as an effective, eco-friendly, and low-cost approach. Many plant species have demonstrated high efficiency in removing volatile organic compounds (VOCs) and particulate matter (PM). In our laboratory, several plant species were found to effectively remove pollutants such as formaldehyde, benzene, and trimethylamine. Their removal efficiency, pollutant uptake, and transformation mechanisms have been thoroughly investigated.

To further enhance performance, engineering designs such as botanical biofilters have been developed. These systems were tested at pilot scale and later applied in real contaminated sites, showing strong potential for practical use.

In addition, a comprehensive database of plant species for pollution reduction has been developed, along with innovative solutions such as green walls and landscape design programs aimed at reducing dust and air pollution. These technologies have already been implemented in more than four public areas in Bangkok, Thailand, demonstrating clear benefits for public use.

The approach has also gained strong interest from both private and government sectors, leading to collaborations with multiple organizations to monitor and evaluate the impact of these technologies. The results indicate that strategically designed green spaces can reduce pollution significantly more effectively than conventional tree planting, highlighting the importance of proper planning in urban greening. (more info)