Air purification from TCE and PCE contamination in a hybrid bioreactors and biofilter integrated system

Tabernacka, Agnieszka; Zborowska, E.; Wojtkowska, Małgorzata; Borawski, Maciej

doi:10.1016/j.jhazmat.2013.11.013

Cited by 19 publications

(2 citation statements)

References 33 publications

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“…Operational advantages may be obtained as a result of integrating two bioreactors, e.g., biofilter-biofilter, [6][7][8][9] TBR-biofilter(s), [10][11][12][13][14] biofilter-TBR, [15] mixing reactor-TBR, [16] and bioscrubber-biofilter. [17] In such integrated reactors, the expected TBR positioning is in front of BF, due to the high water usage in the TBR. For example, methanol was removed predominantly from a mixture of methanolCa¡pineneCH 2 S in a tricklebed reactor compared to other, more hydrophobic mixture components.…”

Section: Introductionmentioning

confidence: 99%

A two-stage combined trickle bed reactor/biofilter for treatment of styrene/acetone vapor mixtures

Vaněk

Halecky

Páca

et al. 2015

Journal of Environmental Science and Health, Part A

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Performance of a two-stage biofiltration system was investigated for removal of styrene-acetone mixtures. High steady-state acetone loadings (above C(in)(Ac) = 0.5 g.m(-3) corresponding to the loadings > 34.5 g.m(-3).h(-1)) resulted in a significant inhibition of the system's performance in both acetone and styrene removal. This inhibition was shown to result from the acetone accumulation within the upstream trickle-bed bioreactor (TBR) circulating mineral medium, which was observed by direct chromatographic measurements. Placing a biofilter (BF) downstream to this TBR overcomes the inhibition as long as the biofilter has a sufficient bed height. A different kind of inhibition of styrene biodegradation was observed within the biofilter at very high acetone loadings (above C(in)(Ac) = 1.1 g.m(-3) or 76 g.m(-3).h(-1) loading). In addition to steady-state measurements, dynamic tests confirmed that the reactor overloading can be readily overcome, once the accumulated acetone in the TBR fluids is degraded. No sizable metabolite accumulation in the medium was observed for either TBR or BF. Analyses of the biodegradation activities of microbial isolates from the biofilm corroborated the trends observed for the two-stage biofiltration system, particularly the occurrence of an inhibition threshold by excess acetone.

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Section: Introductionmentioning

confidence: 99%

A two-stage combined trickle bed reactor/biofilter for treatment of styrene/acetone vapor mixtures

Vaněk

Halecky

Páca

et al. 2015

Journal of Environmental Science and Health, Part A

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“…Several biological treatment technologies have shown promise in the removal of halogenated compounds. These technologies include bioscrubbers (e.g., trichloroethylene [TCE] and 1,2-dichloroethylene [1,2-DCE]) [ 5 , 6 , 7 ], biotrickling filters (e.g., o-chlorotoluene and m-dichlorobenzene) [ 8 , 9 ], biofilters (e.g., chlorobenzene and TCE) [ 10 , 11 ] and biodegradation.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Genomic Analysis of 3-Chlorobenzoate-Degrading Bacteria from Soil

et al. 2023

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The compound 3-chlorobenzoate (3-CBA) is a hazardous industrial waste product that can harm human health and the environment. This study investigates the physiological and genetic potential for 3-chlorobenzoate (3-CBA) degradation. Six 3-CBA Gram-negative degraders with different degradation properties belonging to the genera Caballeronia, Paraburkholderia and Cupriavidus were isolated from the soil. The representative strains Caballeronia 19CS4-2 and Paraburkholderia 19CS9-1 showed higher maximum specific growth rates (µmax, h−1) than Cupriavidus 19C6 and degraded 5 mM 3-CBA within 20–28 h. Two degradation products, chloro-cis,cis-muconate and maleylacetate, were detected in all isolates using high-performance liquid chromatography and mass spectrometry. Genomic analyses revealed the presence of cbe and tfd gene clusters in strains 19CS4-2 and 19CS9-1, indicating that they probably metabolized the 3-CBA via the chlorocatechol ortho-cleavage pathway. Strain 19C6 possessed cbe genes, but not tfd genes, suggesting it might have a different chlorocatechol degradation pathway. Putative genes for the metabolism of 3-hydroxybenzoate via gentisate were found only in 19C6, which utilized the compound as a sole carbon source. 19C6 exhibited distinct characteristics from strains 19CS4-2 and 19CS9-1. The results confirm that bacteria can degrade 3-CBA and improve our understanding of how they contribute to environmental 3-CBA biodegradation.

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Effect of a Ternary Mixture of Volatile Organic Compounds on Degradation of TCE in Biotrickling Filter Systems

Chheda

Sorial

2016

Water Air Soil Pollut

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Air purification from TCE and PCE contamination in a hybrid bioreactors and biofilter integrated system

Cited by 19 publications

References 33 publications

A two-stage combined trickle bed reactor/biofilter for treatment of styrene/acetone vapor mixtures

A two-stage combined trickle bed reactor/biofilter for treatment of styrene/acetone vapor mixtures

Isolation and Genomic Analysis of 3-Chlorobenzoate-Degrading Bacteria from Soil

Effect of a Ternary Mixture of Volatile Organic Compounds on Degradation of TCE in Biotrickling Filter Systems

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