Fabrication of ultrafiltration membranes by repurposing dental zirconia waste: Fabrication of ultrafiltration membranes by repurposing dental zirconia waste
Translated title
Fabrication of ultrafiltration membranes by repurposing dental zirconia waste
Author
Wang, Zijian
Term
4. Term
Education
Publication year
2025
Abstract
This thesis examines how zirconia waste from dental applications can be combined with commercial zirconia to make zirconia membranes on silicon carbide supports for ultrafiltration, a process that separates very small particles from liquids. To optimize the subsequent coating procedure and heat treatment, the behavior of the zirconia powders at different acidity levels (pH) and temperatures was analyzed using dynamic light scattering (DLS) to assess particle size and stability, and differential scanning calorimetry (DSC) to track thermal changes. In addition, X-ray diffraction (XRD) was used to characterize the crystalline structure of the zirconia powders before and after calcination (high-temperature heating).
Denne afhandling undersøger, hvordan zirkoniaaffald fra dentalområdet kan kombineres med kommerciel zirkonia for at fremstille zirkoniamembraner på siliciumcarbid-underlag til ultrafiltrering, en proces der adskiller meget små partikler fra væsker. For at optimere den efterfølgende belægningsprocedure og varmebehandling blev zirkoniapulvernes opførsel ved forskellige surhedsgrader (pH) og temperaturer analyseret med dynamisk lysspredning (DLS), som giver viden om partikelstørrelse og stabilitet, og differentiel scanningskalorimetri (DSC), som registrerer termiske ændringer. Derudover blev røntgendiffraktion (XRD) anvendt til at karakterisere pulvernes krystallinske struktur før og efter kalcinering (opvarmning ved høj temperatur).
[This apstract has been rewritten with the help of AI based on the project's original abstract]