Skip to main content
Log in

Iron (III) oxyhydroxide powders with TEMPO-oxidized cellulose nanofibrils: effective adsorbents for removal of fluoride ion in water

  • Original Research
  • Published:
Cellulose Aims and scope Submit manuscript

Abstract

Fluoride ions are toxic, and F in groundwater for drinking should be sufficiently reduced to be less than the regulated concentration. In this study, cellulose nanofibril-containing iron oxyhydroxide (FeOOH) powders were synthesized, and their F adsorption behaviors were studied under various conditions. 2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (CNFs) were added to 0.1 M FeCl3, and 1 M NaOH was added to the FeCl3/TEMPO–CNF mixture to prepare FeOOH precipitates at various FeOOH/TEMPO–CNF mass ratios. When TEMPO–CNFs were present in the FeCl3 solution, the FeOOH/TEMPO–CNF precipitates were quantitatively obtained by straightforward filtration with filter paper; enabled by the larger size (> 300 µm) of the FeOOH/TEMPO–CNF precipitates than the FeOOH precipitates (< 100 µm) prepared without TEMPO–CNFs. The oven-dried FeOOH/TEMPO–CNF powder (87/13 by mass) showed the highest F adsorption ratio in water compared with the synthesized FeOOH/TEMPO–CNF powders with FeOOH/TEMPO–CNF mass ratios of 100/0, 79/21, and 73/27. The F adsorption ratios of the FeOOH/TEMPO–CNF powders were stable over the pH range 4‒10. Scanning electron microscopy and energy-dispersive spectroscopy analyses of the powder surfaces before and after F adsorption indicate that the F in water adsorbed onto the FeOOH/TEMPO–CNF powder (87/13 by mass) and partially replaced the Cl that was originally present in the powder. Thus, the FeOOH/TEMPO–CNF powder prepared in this study can be used as efficient, cost-effective F adsorbents for drinking water and industrially polluted wastewater.

Graphical abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

Download references

Acknowledgments

The authors thank Edanz for editing a draft of this manuscript.

Funding

The authors have not disclosed any funding.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Akira Isogai.

Ethics declarations

Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The manuscript was approved by all authors for publication.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 5805 kb)

Rights and permissions

Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Umehara, M., Kumamoto, Y., Mukai, K. et al. Iron (III) oxyhydroxide powders with TEMPO-oxidized cellulose nanofibrils: effective adsorbents for removal of fluoride ion in water. Cellulose 29, 9283–9295 (2022). https://doi.org/10.1007/s10570-022-04842-w

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-022-04842-w

Keywords

Navigation