Phosphate recovery from aqueous phase using novel zirconium-based adsorbent
Yugo Uematsu1, Fumihiko Ogata1, Riko Okamoto1
1Faculty of Pharmacy, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
Heliyon
|April 26, 2024
Summary
A new zirconium-based adsorbent effectively removes phosphate ions (PO4^3-) through monolayer adsorption. This reusable material demonstrates significant potential for industrial phosphate removal applications.
Area of Science:
- Materials Science
- Environmental Chemistry
- Adsorption Science
Background:
- Phosphate ion (PO4^3-) contamination poses environmental challenges.
- Development of efficient adsorbents is crucial for water remediation.
- Zirconium-based materials show promise for ion adsorption.
Purpose of the Study:
- To investigate the phosphate ion (PO4^3-) adsorption capacity of a novel zirconium-based adsorbent.
- To characterize the physicochemical properties influencing adsorption.
- To evaluate the adsorbent's reusability and adsorption mechanism.
Main Methods:
- Characterization using electron microscopy, X-ray diffraction, thermal analysis, BET surface area, pore volume, pH point of zero charge (pHpzc), and surface hydroxyl groups.
- Phosphate ion (PO4^3-) adsorption capacity determined via batch experiments.
- Adsorption/desorption cycles conducted to assess reusability.
Main Results:
- The adsorbent exhibits significant PO4^3- adsorption capacity.
- Adsorption follows internal diffusion and monolayer adsorption kinetics.
- Solution pH critically influences PO4^3- adsorption efficiency.
- The adsorbent demonstrated effective PO4^3- adsorption and desorption over at least five cycles.
Conclusions:
- The novel zirconium-based adsorbent is highly effective for phosphate ion (PO4^3-) removal.
- The material's properties and adsorption mechanism support its potential for industrial applications.
- The adsorbent's reusability makes it a sustainable option for wastewater treatment.
