Formaldehyde is a carcinogenic pollutants indoors everywhere. Formaldehyde treatment have attracted increasing attention of social. Over the past few decades, an increasing number of publications have reported the approach to remove indoor formaldehyde. Potential strategies include physical adsorption, chemical catalysis, and biodegradability.
Although the physical adsorption is widely used, it does not completely remove the pollution. highly efficient chemical catalysis but added the risk of introducing secondary pollutants. biological elimination strategy has attracted more attention to the research of the first two methods, because it is more efficient, clean, and economical.
Plants and bacteria are organisms commonly used in the removal of formaldehyde. However, both have limitations and drawbacks when used alone. This review discusses the mechanism, application and improvement of existing biological methods to eliminate indoor formaldehyde gas. A combination strategy of relying on plants, bacteria, and physical adsorbents exhibit best ability to remove formaldehyde efficient, economical, and safe. When this combined system is integrated with the heating, ventilation, air conditioning and cooling systems (HVAC) systems, practical combination can be established in the elimination of formaldehyde.
Multivariate interactions of biological and non-biological necessary for the future development of the elimination of indoor formaldehyde. KEY POINTS: • Indoor elimination of formaldehyde gas is needed especially for the new dwellings. • biological elimination strategy has been attracting increasing attention research. • Combined systems of plants, bacteria, and physical adsorbent exhibits the best efficiency. • Integrated Device biological and non-biological potential practical.
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