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Related Concept Videos

Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...

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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
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Efficient PFAS Removal Using Reusable and Non-Toxic 3D Printed Porous Trianglamine Hydrogels.

Arnaud Chaix1, Chaimaa Gomri1, Belkacem Tarek Benkhaled1

  • 1Institut Européen des Membranes (IEM), Univ Montpellier, CNRS, ENSCM, Montpellier, 34090, France.

Advanced Materials (Deerfield Beach, Fla.)
|November 22, 2024
PubMed
Summary
This summary is machine-generated.

Advanced 3D printed hydrogels effectively capture per- and polyfluoroalkyl substances (PFAS) from water. These novel materials demonstrate high efficiency and stability, offering a promising solution for PFAS water remediation.

Keywords:
3D printingHydrogelsPFASPolymer networkPorous SorbentsStereolithographyTrianglamine

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemical Engineering

Background:

  • Per- and polyfluoroalkyl substances (PFAS) pose a significant environmental and health risk, necessitating advanced water remediation technologies.
  • Current methods for PFAS removal are often limited in efficiency or scope, driving the need for innovative solutions.

Purpose of the Study:

  • To design and fabricate a functional 3D printed hydrogel capable of trapping a broad spectrum of PFAS contaminants.
  • To investigate the efficacy of tailored hydrogels, including porous and quaternized variants, for PFAS removal from aqueous sources.

Main Methods:

  • Fabrication of hydrogels using stereolithography (SLA) with photo-crosslinked dimethacrylate-ureido-trianglamine (DMU-Δ) and Pluronic P123 dimethacrylate (PDM).
  • Preparation of porous (3D-PSHΔ), nonporous (3D-SHΔ), and quaternized (3D-PSHΔQ+) hydrogels.
  • Comparative analysis of PFAS removal efficiency against P123 hydrogels without trianglamine (3D-SH).
  • Utilized metadynamic simulations to confirm the interaction mechanism between the hydrogel and PFAS.

Main Results:

  • The trianglamine component (Δ) is crucial for PFAS sorption, as demonstrated by the lack of affinity in 3D-SH hydrogels.
  • Porous hydrogel matrices (3D-PSHΔ) exhibited the fastest and highest PFAS uptake capacity, removing approximately 91% of PFAS within 5 hours from both deionized and river water.
  • Quaternization of porous hydrogels (3D-PSHΔQ+) further enhanced sorption kinetics for various PFAS chain lengths and polar heads.
  • The developed hydrogels are non-toxic and possess excellent chemical and thermal stability.

Conclusions:

  • Tailored 3D printed hydrogels, particularly porous and quaternized variants, are highly effective for rapid and efficient PFAS removal.
  • The specific chemical structure, featuring trianglamine, is key to the hydrogel's high affinity for PFAS.
  • These stable, non-toxic hydrogels represent a promising technology for large-scale PFAS water remediation applications.