Removal of Indoor Air Pollutant Formaldehyde, by Plant-Microbes Combined System

IJEP 43(8): 726-734 : Vol. 43 Issue. 8 (August 2023)

Siddesh V. Siddalingegowda1, R. Sindhu1, N.S. Raju2 and M. Supreeth1*

1. JSS Academy of Higher Education and Research, Department of Microbiology, School of Life Sciences, Mysuru, Karnataka – 570 015, India
2. University of Mysore Manasagangothri, Department of Environmental Science, Mysuru, Karnataka – 570 006, India


Air pollution is a major global health issue in developing countries. Nowadays, indoor air pollution has become a significant concern rather than outdoor air pollution due to its known harmful effects on human health. The primary indoor air pollutant is volatile organic compounds (VOCs) due to their adverse effects on human health. Among different hazardous VOCs, formaldehyde, colourless and odourous gas that irritates and causes nasopharyngeal cancer, is a significant pollutant seeking attention. Several studies have reported formaldehyde concentrations in the indoor air of homes and offices in different countries. Hence, it is essential to consider removing formaldehyde from the air. Many physical and chemical methods for formaldehyde removal from indoor air have already been commercially applied in developed countries, but they are expensive and not eco-friendly. Alternatively, plants can remove formaldehyde from polluted air, but they show low efficiency if used alone. However, with high efficiency, plant-microbes can be combined to remove formaldehyde from indoor air pollutants. Compared to physical and chemical methods, the plant-microbes combination system is a promising emerging technique with the advantages of high efficiency, easy operation, low-cost and promotes the social-economic condition of the nation. In this review, we report on plant-microbes combination in removal of formaldehyde efficiently and discuss on possibility of commercialization of dual system and its challenges.


Formaldehyde, Pollution, Indoor air


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