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Article

Pollutant Absorption as a Possible End-Of-Life Solution for Polyphenolic Polymers

Forest Products Technology & Timber Constructions Department, Salzburg University of Applied Sciences, Marktstraße 136a, 5431 Kuchl, Austria
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Polymers 2019, 11(5), 911; https://doi.org/10.3390/polym11050911
Received: 16 April 2019 / Revised: 14 May 2019 / Accepted: 17 May 2019 / Published: 20 May 2019
(This article belongs to the Special Issue Bio-Based Polymers for Engineered Green Materials)
Tannin- and lignin-furanic foams are natural porous materials that have attracted high interest in the scientific and industrial communities for their high thermal and fire-resistant properties. However, no interesting solutions have been proposed for the management of their end-life as yet. In this study, the phenolic-furanic powders derived from the foams were analyzed for their capacity to remove different pollutants like neutral, cationic, and anionic organic molecules from wastewater. It was observed that the macromolecules produced from initially bigger fractions were more suitable to remove methylene blue and sodium dodecyl sulfate (SDS) while contained absorptions were observed for riboflavin. Acidified tannin powders were also prepared to understand the role of the flavonoid in the absorption mechanism. The latter showed outstanding absorption capacity against all of the tested pollutants, highlighting the key-role of the flavonoid fraction and suggesting the limited contribution of the furanic part. All adsorbents were investigated through FT-IR and solid state 13C-NMR. Finally, the powders were successfully regenerated by simple ethanol washing, showing almost complete absorption recovery. View Full-Text
Keywords: Bio-based foams; wastewater treatments; cationic dyes; anionic surfactants; pollutant adsorbents; tannin polymer; tannin-furanic foam Bio-based foams; wastewater treatments; cationic dyes; anionic surfactants; pollutant adsorbents; tannin polymer; tannin-furanic foam
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MDPI and ACS Style

Sepperer, T.; Neubauer, J.; Eckardt, J.; Schnabel, T.; Petutschnigg, A.; Tondi, G. Pollutant Absorption as a Possible End-Of-Life Solution for Polyphenolic Polymers. Polymers 2019, 11, 911. https://doi.org/10.3390/polym11050911

AMA Style

Sepperer T, Neubauer J, Eckardt J, Schnabel T, Petutschnigg A, Tondi G. Pollutant Absorption as a Possible End-Of-Life Solution for Polyphenolic Polymers. Polymers. 2019; 11(5):911. https://doi.org/10.3390/polym11050911

Chicago/Turabian Style

Sepperer, Thomas, Jonas Neubauer, Jonas Eckardt, Thomas Schnabel, Alexander Petutschnigg, and Gianluca Tondi. 2019. "Pollutant Absorption as a Possible End-Of-Life Solution for Polyphenolic Polymers" Polymers 11, no. 5: 911. https://doi.org/10.3390/polym11050911

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