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doi:10.22028/D291-43669
Titel: | Optimizing the Composition of Bioactive Coatings to Support Toluene Removal |
VerfasserIn: | González-Martín, Javier del Campo Bécares, Aránzazu Munoz, Raul Lebrero, Raquel |
Sprache: | Englisch |
Verlag/Plattform: | Social Science Research Network |
Erscheinungsjahr: | 2024 |
Freie Schlagwörter: | Bioactive coating biofilm Gas treatment HNT Latex VOCs |
DDC-Sachgruppe: | 540 Chemie |
Dokumenttyp: | Sonstiges |
Abstract: | The potential of bioactive coatings as an innovative biotechnology to overcome the mass-transfer limitations of conventional technologies when treating indoor air pollutants, especially hydrophobic volatile organic compounds (VOCs), was herein assessed. Bioactive coatings consist of active microorganisms entrapped in a polymer matrix, which needs to be porous to facilitate effective gas pollutant and nutrient exchange. To increase porosity, two additives, sucrose and glycerol mixtures (Suc/Gly) and halloysite nanotubes (HNTs), were included in the bioactive coatings at two concentration levels. The toluene removal performance of the different bioactive coatings was studied in batch mode at low (~300 mg m-3) and high (~3000 mg m-3) toluene concentrations. Overall, low HNTs concentration coatings supported optimum toluene removals, comparable to biofilm controls at both toluene concentrations. High HNTs concentration coatings and low Suc/Gly concentration coatings achieved good toluene removals, especially when supplemented at 300 mg m-3, eventually outperforming biofilm controls at the end of high toluene concentration experiments. High Suc/Gly concentration supported a limited toluene removal in both experiments, which was attributed to a preferential consumption of sucrose over toluene. These findings were corroborated by ESEM/conventional SEM imaging, revealing a certain degree of porosity in the HNTs bioactive coatings, visible at both the surface and internal levels. On the contrary, more homogeneous surfaces were observed in the Suc/Gly bioactive coatings, where total polymer coalescence was partially hindered by the addition of Suc/Gly. These results paved the way towards the implementation of bioactive coating in larger bioreactors for real-life indoor air purification. |
DOI der Erstveröffentlichung: | 10.2139/ssrn.4988634 |
URL der Erstveröffentlichung: | https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4988634 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-436696 hdl:20.500.11880/39131 http://dx.doi.org/10.22028/D291-43669 |
Datum des Eintrags: | 6-Dez-2024 |
Bemerkung/Hinweis: | Preprint |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie |
Professur: | NT - Prof. Dr. Aránzazu del Campo |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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