Nanocrystalline Ce(OH)<sub>4</sub>-based materials: ruthenium selective adsorbent for highly alkaline radioactive liquid waste-Reference-Cited by-同舟云学术

Nanocrystalline Ce(OH)₄-based materials: ruthenium selective adsorbent for highly alkaline radioactive liquid waste

Published:2024-02-14 Issue:7-8 Volume:112 Page:529-538
ISSN:0033-8230
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Selvakumar Jayaprakasam¹²^ORCID,Anshul Kumari¹²,Nishad Padala A.³,Anupkumar Bhaskarapillai³²,Srinivasan Subramanian¹,Jawahar Nethapakkam R.¹,Rufus Appadurai L.³²,Gayen Jayantha K.¹,Krishna Mohan Tulasi V.³

Affiliation:

1. Integrated Nuclear Recycle Plant, Nuclear Recycle Board , BARC , Kalpakkam 603102 , Tamil Nadu , India

2. Homi Bhabha National Institute , Anushakthi Nagar , Mumbai 400085 , Maharastra , India

3. Water and Steam Chemistry Division, Chemistry Group , BARC , Kalpakkam 603102 , Tamil Nadu , India

Abstract

Abstract Cerium hydroxide, Ce(OH)4 (Ce), has been synthesised and assessed as a Ru-selective adsorbent for treating alkaline radioactive liquid waste. Infrared spectroscopy, thermal analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy investigations confirmed the successful formation of nanocrystalline Ce from Ce(NO3)3·6H2O. Selective removal of 106Ru from the ion-exchange effluent of intermediate-level liquid waste (ILW) by Ce was assessed using a high-pure germanium (HPGe) gamma-ray spectrometer. The calculated average distribution coefficient (k D) was ∼200 mL/g. The percentage removal of 106Ru using Ce by varying time, [106Ru] and [Ce] was calculated. The adsorption of 106Ru on Ce follows pseudo-second-order and Freundlich isotherms. The calculated Q max was 93,584 Bq/g. Accelerated leaching studies of the Ru-laden Ce cement product were carried out and found suitable for transport and disposal. Further, Ce-Polyether sulphone (Ce-PES) and Ce-Chitosan (CeC) composites were prepared and assessed for their Ru-uptake capacity for engineering scale application.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/ract-2023-0194/pdf

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