Hydrothermal conversion of Cs-polluted soil into pollucite for Cs immobilization

Hydrothermal conversion of Cs-polluted soil into pollucite for Cs immobilization Chemical Engineering Journal 336 (2018) 503–509 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.elsevier.com/locate/cej Hydrothermal conversion of Cs-polluted soil into pollucite for Cs immobilization Yuqian Chen, Zhenzi Jing , Kunchuan Cai, Jian Li Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, School of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: To deal with the treatment of huge amounts of Cs-polluted soil from the first nuclear power plant in Fukushima Hydrothermal synthesis (Japan), a low temperature hydrothermal technology has been developed to convert polluted soil into pollucite Soil for the in-situ immobilization of Cs. The results show that pollucite could be synthesized with a wide range of Cs Immobilization content using a short curing time (2 h) or low curing temperature (160 °C). However, a higher curing tem- Cesium perature or a longer curing time seems to favor the formation of more pollucite. With the addition of Ca(OH) ,a Pollucite tough pollucite body could be synthesized, and the strength enhancement is mainly due to calcium silicate hydrate (C-S-H) formation. This also suggests that the hydrothermal technology has great potential for the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemical Engineering Journal Elsevier

Hydrothermal conversion of Cs-polluted soil into pollucite for Cs immobilization

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
1385-8947
eISSN
1873-3212
D.O.I.
10.1016/j.cej.2017.11.187
Publisher site
See Article on Publisher Site

Abstract

Chemical Engineering Journal 336 (2018) 503–509 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.elsevier.com/locate/cej Hydrothermal conversion of Cs-polluted soil into pollucite for Cs immobilization Yuqian Chen, Zhenzi Jing , Kunchuan Cai, Jian Li Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, School of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: To deal with the treatment of huge amounts of Cs-polluted soil from the first nuclear power plant in Fukushima Hydrothermal synthesis (Japan), a low temperature hydrothermal technology has been developed to convert polluted soil into pollucite Soil for the in-situ immobilization of Cs. The results show that pollucite could be synthesized with a wide range of Cs Immobilization content using a short curing time (2 h) or low curing temperature (160 °C). However, a higher curing tem- Cesium perature or a longer curing time seems to favor the formation of more pollucite. With the addition of Ca(OH) ,a Pollucite tough pollucite body could be synthesized, and the strength enhancement is mainly due to calcium silicate hydrate (C-S-H) formation. This also suggests that the hydrothermal technology has great potential for the

Journal

Chemical Engineering JournalElsevier

Published: Mar 15, 2018

References

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