A review of bio filtration process and its use in removing air pollutants and biotrickling filters to remove odors and volatile organic compounds (VOCs)

Air pollution is a key issue that industry faces during the production process. Controlling this pollution is vital to the environment and living organisms as it has harmful effects. Biofiltration is a current anti-pollution strategy that involves removing odors, volatile organic compounds (VOCs), and other pollutants from the air. Recently, this approach has gained popularity worldwide due to its cheap and uncomplicated technique, effortless function, high reduction efficiency, lower energy requirement, and residual consequences that do not require additional treatment. In this paper, we have discussed a general introduction based on biofiltration and classification of air pollutants from different sources. The history of biofiltration and other mechanisms used in biofiltration techniques has been discussed. In addition, the crucial factors of biofilters affecting the performance of biofiltration techniques have been discussed in detail. Finally, we closed the topic with current challenges and future prospects.