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Related Experiment Video

Updated: Jun 10, 2026

Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
09:46

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Published on: August 26, 2018

Virus removal by biogenic cerium.

Bart De Gusseme1, Gijs Du Laing, Tom Hennebel

  • 1Laboratory of Microbial Ecology and Technology, Ghent University, Coupure Links 653, B-9000 Gent, Belgium.

Environmental Science & Technology
|August 14, 2010
PubMed
Summary

This study developed biogenic cerium (bio-Ce) using bacteria to remove viruses from drinking water. Bio-Ce demonstrated significant antiviral properties, outperforming simple cerium(III) nitrate.

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Area of Science:

  • Environmental Science
  • Microbiology
  • Water Treatment

Background:

  • Cerium (Ce) exhibits antimicrobial properties in +III and +IV oxidation states.
  • Developing effective virus removal strategies for drinking water is crucial.

Purpose of the Study:

  • To investigate the efficacy of biogenic cerium (bio-Ce) for virus removal in drinking water.
  • To evaluate the role of a bacterial carrier matrix in enhancing cerium's antiviral activity.

Main Methods:

  • Biogenic cerium (bio-Ce) was synthesized by combining aqueous Ce(III) with freshwater manganese-oxidizing bacteria (MOB) or Pseudomonas putida MnB29.
  • X-ray absorption spectroscopy confirmed Ce(III) remained on the bacterial surface, associated with phosphoryl groups.
  • Antiviral disinfection assays were performed using a bacteriophage as a model organism.

Main Results:

  • Bio-Ce demonstrated significant antiviral properties against a model bacteriophage.
  • A 4.4 log decrease in phage was achieved after 2 hours with 50 mg L(-1) bio-Ce.
  • Virus removal was significantly enhanced by the bacterial carrier matrix compared to Ce(III) nitrate alone.

Conclusions:

  • Biogenic cerium (bio-Ce) is an effective agent for virus removal in water treatment.
  • The bacterial carrier matrix is essential for maximizing the antiviral efficacy of cerium.
  • This approach offers an innovative strategy for ensuring safe drinking water.