Copper-Coated cellulose-based water filters for virus retention

Gergo P. Szekeres, Zoltan Nemeth, Krisztina Schrantz, Krisztian Nemeth, Mateusz Schabikowski, Jacqueline Traber, Wouter Pronk, Klara Hernadi, Thomas Graule

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Despite recent efforts in modernization of water treatment facilities, the problem of access to healthy drinking water for hundreds of millions of people has still not been solved. A water filter based on Cu-coated nanofibrillated cellulose with controlled porosity was prepared by the “paper-making” method. We have optimized the proper mass and ratio of functionalized and pure nanofibrillated cellulose for the preparation of the filter. MS2 bacteriophages were used to model human pathogenic virions. We tested our filter material in batch experiments and the fixed filters in flow experiments. The fabricated Cu-coated nanofibrillated cellulose filters were characterized by scanning electron microscopy, X-ray diffraction, specific surface area measurement (Brunauer−Emmett−Teller), dynamic light scattering, and inductively coupled plasma mass spectroscopy. Our measurements proved that the fixation of cellulose nanofibers plays a significant role in the degree of virus retention and it greatly enhances the efficiency of the filtration. By using these functionalized water filters, we were able to achieve a virus retention of at least 5 magnitudes (5Log) at three different pH values: 5.0, 7.5, and 9.

Original languageEnglish
Pages (from-to)446-454
Number of pages9
JournalACS Omega
Volume3
Issue number1
DOIs
Publication statusPublished - Jan 1 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Szekeres, G. P., Nemeth, Z., Schrantz, K., Nemeth, K., Schabikowski, M., Traber, J., Pronk, W., Hernadi, K., & Graule, T. (2018). Copper-Coated cellulose-based water filters for virus retention. ACS Omega, 3(1), 446-454. https://doi.org/10.1021/acsomega.7b01496