Air biofilters for a mixture of organic gaseous pollutants: an approach for industrial applications

Ferdowsi, Milad; Khabiri, Bahman; Buelna, Gerardo; Jones, J. Peter; Heitz, Michèle

doi:10.1080/07388551.2022.2100735

Cited by 9 publications

(1 citation statement)

References 107 publications

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“…In industrial applications, BTFs may encounter changes in major substrates, such as a shift from a T and EA mixture to a T and H mixture, or vice versa. Moreover, the treatment of multiple pollutants with BTFs encountered the challenge of substrate interactions, which can be antagonistic, neutral, or synergistic [ 11 ]. A number of research contributions have examined the simultaneous abatement of a binary mixture of hydrophobic and hydrophilic VOCs [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Biofiltration of toluene in the presence of ethyl acetate or n-hexane: Performance and microbial community

Xue,

Wang,

Zhai

et al. 2024

PLoS ONE

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This study describes the operation of two independent parallel laboratory-scale biotrickling filters (BTFs) to degrade different types of binary volatile organic compound (VOC) mixtures. Comparison experiments were conducted to evaluate the effects of two typical VOCs, i.e., ethyl acetate (a hydrophilic VOC) and n-hexane (a hydrophobic VOC) on the removal performance of toluene (a moderately hydrophobic VOC) in BTFs ‘‘A” and ‘‘B”, respectively. Experiments were carried out by stabilizing the toluene concentration at 1.64 g m−3 and varying the concentrations of gas-phase ethyl acetate (0.85–2.8 g m−3) and n-hexane (0.85–2.8 g m−3) at an empty bed residence time (EBRT) of 30 s. In the presence of ethyl acetate (850 ± 55 mg m-3), toluene exhibited the highest removal efficiency (95.4 ± 2.2%) in BTF “A”. However, the removal rate of toluene varied from 48.1 ± 6.9% to 70.1 ± 6.8% when 850 ± 123 mg m-3 to 2800 ± 136 mg m-3 of n-hexane was introduced into BTF “B”. The high-throughput sequencing data revealed that the genera Pseudomonas and Comamonadaceae_unclassified are the core microorganisms responsible for the degradation of toluene. The intensity of the inhibitory or synergistic effects on toluene removal was influenced by the type and concentration of the introduced VOC, as well as the number and activity of the genera Pseudomonas and Comamonadaceae_unclassified. It provides insights into the interaction between binary VOCs during biofiltration from a microscopic perspective.

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Section: Introductionmentioning

confidence: 99%