Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters

Cheng-Jui Tsai; Yin-Ru Chang; Man-Li Chen; Yu-Kuo Lo; Duu-Jong Lee

doi:10.1016/j.jtice.2018.09.028

Author(s)

Cheng-Jui Tsai
Yin-Ru Chang
Man-Li Chen
Yu-Kuo Lo
Duu-Jong Lee

Detail(s)

Original language	English
Pages (from-to)	1-10
Journal / Publication	Journal of the Taiwan Institute of Chemical Engineers
Volume	95
Publication status	Published - 1 Feb 2019
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.jtice.2018.09.028 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85056991629&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(e84481ef-9f4b-409d-8069-fd61d2734314).html

Abstract

The poly(vinyl alcohol) (PVA) granules can immobilize Prussian blue (PB) nanoparticles to form efficient cesium adsorbent. This paper for the first time produced the PVA-PB granules with shape stability at drying-re-wetting cycles by crosslinking PVA, alginate and PB drops with boric acid (PVA-B) followed by extended crosslinking of the formed granules with nucleophiles, 6 hr for phosphate (PVA-P), 12 hr for sulfate (PVA-S), and > 12 hr for nitrate (PVA-N). The q_max values for the yielded PVA granules ranged 76.8–87.6 mg/g PB. The PVA-B matrix has effective diffusivity for Cs ions at 7% of that in the bulk water. The PVA-P has similar diffusivity with PVA-B, while the PV-S and PVA-N have further reduced internal diffusivities (by 46% and 67%, respectively). Repeated washing can minimize the hexacyanoferrate release potential from the PVA granules. The present dried, nucleophile-crosslinked PVA granules can be stored for long time period and can be used directly as the “first-aid” radioactive Cs barrier for waterworks and pipeline stations when meeting urgent radioactive threats.

Research Area(s)

Cesium, Granules, Prussian blue, Stability

Bibliographic Note

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Citation Format(s)

[ RIS ] [ BibTeX ]

Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters. / Tsai, Cheng-Jui; Chang, Yin-Ru; Chen, Man-Li et al.
In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 95, 01.02.2019, p. 1-10.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Tsai, C-J, Chang, Y-R, Chen, M-L, Lo, Y-K & Lee, D-J 2019, 'Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters', Journal of the Taiwan Institute of Chemical Engineers, vol. 95, pp. 1-10. https://doi.org/10.1016/j.jtice.2018.09.028

Tsai, C.-J., Chang, Y.-R., Chen, M.-L., Lo, Y.-K., & Lee, D.-J. (2019). Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters. Journal of the Taiwan Institute of Chemical Engineers, 95, 1-10. https://doi.org/10.1016/j.jtice.2018.09.028

Tsai CJ, Chang YR, Chen ML, Lo YK, Lee DJ. Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters. Journal of the Taiwan Institute of Chemical Engineers. 2019 Feb 1;95:1-10. doi: 10.1016/j.jtice.2018.09.028

Tsai, Cheng-Jui ; Chang, Yin-Ru ; Chen, Man-Li et al. / Stable poly(vinyl alcohol) and alginate cross-linked granules with immobilized ferric hexacyanoferrate for cesium removal from waters. In: Journal of the Taiwan Institute of Chemical Engineers. 2019 ; Vol. 95. pp. 1-10.