Effect of metabolic uncouplers on the performance of toluene-degrading biotrickling filter.

Szczegóły
Abstrakt

Tytuł:: Effect of metabolic uncouplers on the performance of toluene-degrading biotrickling filter.
Autorzy:: De Vela RJ; Chemical and Process Engineering Department, University of Canterbury, Christchurch, New Zealand. .; Camarines Norte State College, F. Pimentel Avenue, 4600, Daet, Camarines Norte, Philippines. .
Wigley K; Chemical and Process Engineering Department, University of Canterbury, Christchurch, New Zealand.
Baronian K; Chemical and Process Engineering Department, University of Canterbury, Christchurch, New Zealand.
Gostomski PA; Chemical and Process Engineering Department, University of Canterbury, Christchurch, New Zealand.
Źródło:: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2021 Aug; Vol. 28 (31), pp. 41881-41895. Date of Electronic Publication: 2021 Mar 31.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Publication: <2013->: Berlin : Springer
Original Publication: Landsberg, Germany : Ecomed
MeSH Terms:: Air Pollutants*
Toluene*
Biomass ; Bioreactors ; Filtration
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Contributed Indexing:: Keywords: Biofilter; Biomass control; Carbonyl cyanide m-chlorophenylhydrazone; Carbonyl cyanide-p-trifluoromethoxyphenylhydrazone; Differential reactor; Elimination capacity; M-chlorophenol
Substance Nomenclature:: 0 (Air Pollutants)
3FPU23BG52 (Toluene)
Entry Date(s):: Date Created: 20210401 Date Completed: 20210812 Latest Revision: 20210812
Update Code:: 20240104
DOI:: 10.1007/s11356-021-13708-w
PMID:: 33791957
: Czasopismo naukowe

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The biomass control potential of three metabolic uncouplers (carbonyl cyanide-p-trifluoromethoxyphenylhydrazone (FCCP), carbonyl cyanide m-chlorophenylhydrazone (CCCP), and m-chlorophenol (m-CP)) was tested in biotrickling filters (BTFs) degrading toluene. The experiments employed two types of reactors: a traditional column design and a novel differential BTF (DBTF) reactor developed by De Vela and Gostomski (J Environ Eng 147:04020159, 2021). Uncouplers caused the toluene elimination capacity (EC) (~33 g/m 3 h for column reactors and ~600 g/m 3 h for DBTF) to decrease by 15-97% in a dose-dependent fashion. The EC completely recovered in the column reactor in 3 to 13 days, while only partial recovery happened in the DBTF. Short-term (1 to 3 days) true uncoupling was indicated by the 20-160% increase in %CO 2 recovery, depending on concentration. FCCP and CCCP increased the pressure drop due to increased extracellular polymeric substances (EPS) production for protection against the uncouplers. The 4.0-mM m-CP weakened the biofilm in the BTF bed, as evidenced by the 130-500% increase in the total organic carbon in the liquid sump of the column and DBTF reactors. Moreover, a microbial shift led to the proliferation of genera that degrade uncouplers, further demonstrating that the uncouplers tested were not a sustainable biomass control strategy in BTFs.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

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