Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO4-) from aqueous solutions

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Lönnrot , S , Paajanen , J , Suorsa , V , Zhang , W , Ritala , M & Koivula , R 2020 , ' Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO4-) from aqueous solutions ' , Separation science and technology , vol. 56 , no. 14 , pp. 2338-2350 . https://doi.org/10.1080/01496395.2020.1826967

Title: Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO4-) from aqueous solutions
Author: Lönnrot, Satu; Paajanen, Johanna; Suorsa, Valtteri; Zhang, Wenzhong; Ritala, Mikko; Koivula, Risto
Other contributor: University of Helsinki, Ion exchange for nuclear waste treatment and for recycling
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Ion exchange for nuclear waste treatment and for recycling
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry


Date: 2020-10-07
Language: eng
Number of pages: 13
Belongs to series: Separation science and technology
ISSN: 0149-6395
DOI: https://doi.org/10.1080/01496395.2020.1826967
URI: http://hdl.handle.net/10138/333271
Abstract: Submicron ZrO(2)fibers with three different Sb-doping levels (5, 10 and 15 cation%) were produced with an electroblowing synthesis for removal of(99)TcO(4)(-). The Sb-doped ZrO(2)fibers showed high selectivity toward(99)TcO(4)(-), which was not interfered by ClO4-, NO(3)(-)or Cl(-)ions and showed no selectivity toward ReO4-. The optimal pH range for the(99)Tc separation was 2-6 but the Sb-doped fibers maintained very high uptake level throughout the studied pH range of 1-10. According to the uptake experiments, Sb(III) is assumed to reduce Tc(VII) to Tc(IV) that is then adsorbed by the zirconia surface.
Subject: Technetium
ZrO2
electroblowing
reduction
antimony doping
OXIDE
ADSORPTION
TC-99
ZRO2
GROUNDWATER
EFFICIENT
116 Chemical sciences
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