Thermophilic waste air treatment of n-alkanes in a two-phase bubble column reactor: the effect of silicone oil addition
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F21%3A43922906" target="_blank" >RIV/60461373:22330/21:43922906 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/https://doi.org/10.1002/jctb.6693" target="_blank" >https://doi.org/https://doi.org/10.1002/jctb.6693</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/jctb.6693" target="_blank" >10.1002/jctb.6693</a>
Alternative languages
Result language
angličtina
Original language name
Thermophilic waste air treatment of n-alkanes in a two-phase bubble column reactor: the effect of silicone oil addition
Original language description
BACKGROUND: Thermophilic waste air biofiltration was developed to overcome the often observed drop in pollutant removal efficiency caused by classical reactor overheating above the mesophilic temperature range. To date, only a few studies have been reported on thermophilic biofiltration of airborne hydrophobic pollutants. In this work, a bubble column reactor (BCR) operated at 50 °C was used to treat waste air contaminated by a mixture of gasoline/kerosene range n-alkanes with a microbial consortium acquired from burning coal dumps. RESULTS: Several strategies were used to increase the low pollutant removal efficiency initially observed. Of these, only the addition of NAP (silicone oil) to the reactor led to increased removal efficiency, due to formation of water-in-oil emulsion. Analysis of the microbial consortium revealed bacteria from the Paenibacilaceae family (FN667384) and unidentified thermophilic fungi (HQ693517.1) to be the dominant organisms within the analyzed category, with 48% and 99% abundance, respectively. In the presence of NAP, longer-chain n-alkanes (C10–C12) were degraded efficiently, unlike their shorter-chain homologs. After 7–10 days, the degradation of shorter-chain C7–C8 n-alkanes was observed at the expense of their longer-chain homologs. CONCLUSION: A two-phase thermophilic BCR proved successful in treating an airborne n-alkane mixture. With the NAP addition, the apparent mass transfer limitations were overcome, creating a suitable environment for thermophilic hydrocarbon biodegradation. As a result, efficient degradation of longer-chain n-alkanes was enabled upon emulsification, whereas the removal of shorter-chain C7–C8 hydrocarbons occurred later, most likely as a consequence of the biomass adaptation. © 2021 Society of Chemical Industry. © 2021 Society of Chemical Industry
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20801 - Environmental biotechnology
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Chemical Technology and Biotechnology
ISSN
0268-2575
e-ISSN
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Volume of the periodical
96
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
1682-1690
UT code for WoS article
000620253800001
EID of the result in the Scopus database
2-s2.0-85101277525