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Updated: Jun 13, 2026

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Comparative Evaluation of Synthetic Zeolites for Radium and Barium Removal from Contaminated Water: From Ideal

Krzysztof Samolej1, Rafał Panek2, Damian Stefański1

  • 1Silesian Centre for Environmental Radioactivity, Central Mining Institute-National Research Institute, Pl. Gwarków 1, 40-166 Katowice, Poland.

Materials (Basel, Switzerland)
|June 12, 2026
PubMed
Summary
This summary is machine-generated.

Synthesized zeolite NaP1 effectively removes radium from saline mine water, outperforming commercial zeolites. Other zeolites showed high barium removal but lower radium selectivity, highlighting real-world water treatment challenges.

Keywords:
NORMadsorptionheavy metalsion exchangemolecular sieves

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Published on: July 13, 2018

Area of Science:

  • Environmental Science
  • Materials Science
  • Chemical Engineering

Background:

  • Radium and barium are hazardous wastewater contaminants.
  • Effective removal strategies are crucial for environmental and human health protection.

Purpose of the Study:

  • To comparatively evaluate five synthetic zeolites (3A, 4A, 5A, 13X, NaP1) for radium and barium removal.
  • To assess zeolite performance in real saline mine water and synthetic water under varying conditions.

Main Methods:

  • Zeolite characterization using XRD, SEM-EDS, and N2 adsorption.
  • Sequential batch adsorption experiments with granular and fine-powder zeolites.
  • Testing with real saline mine water (radium) and synthetic water (barium).

Main Results:

  • Zeolite NaP1 demonstrated superior radium removal (<1 Bq/L effluent activity) from mine water.
  • Commercial zeolites (3A, 4A, 5A, 13X) showed poor radium selectivity.
  • All zeolites achieved >95% barium removal at 100 mg/L; zeolites 3A, 4A, and 13X had highest capacity at 2000 mg/L.

Conclusions:

  • Zeolite NaP1 is a promising adsorbent for radium removal from contaminated mine water.
  • Laboratory conditions may overestimate sorbent performance in real-world water treatment scenarios.
  • Zeolite framework type and physical form influence contaminant removal efficiency.