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

  • Department of Land, Environment, Agriculture and Forestry, University of Padua

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
JournalPolym.
Volume11
Issue number5
DOIs
Publication statusPublished - 20 May 2019

Keywords

  • Anionic surfactants
  • Bio-based foams
  • Cationic dyes
  • Pollutant adsorbents
  • Tannin polymer
  • Tannin-furanic foam
  • Wastewater treatments
  • Cationic surfactants
  • Dyes
  • Flavonoids
  • Pollution
  • Polymers
  • Porous materials
  • Powders
  • Sulfur compounds
  • Tannins
  • Wastewater treatment
  • Absorption capacity
  • Absorption mechanisms
  • Absorption recovery
  • Bio-based
  • Fire-resistant properties
  • Industrial communities
  • Polyphenolic polymers
  • Sodium dodecyl sulfate
  • Anionic Compounds
  • Cationic Compounds

Classification according to Österreichische Systematik der Wissenschaftszweige (ÖFOS 2012)

  • 205019 Material sciences

Applied Research Level (ARL)

  • ARL Level 3 - Proof of the functionality of a principle

Research focus/foci

  • Sustainable Materials and Technologies

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