Sorption behaviour of <sup>137</sup>Cs and <sup>152+154</sup>Eu onto bentonite phosphate modified with nickel: kinetics, isotherms, and chromatographic column application-Reference-Cited by-同舟云学术

Sorption behaviour of ¹³⁷Cs and ^152+154Eu onto bentonite phosphate modified with nickel: kinetics, isotherms, and chromatographic column application

Published:2023-11-03 Issue:1 Volume:112 Page:13-21
ISSN:0033-8230
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Abass Mohamed R.¹^ORCID,Mahrous Sara S.²,Mansy Muhammad S.³⁴

Affiliation:

1. Nuclear Fuel Technology Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority , Cairo , Egypt

2. Environmental Radioactive Pollution Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority , Cairo , Egypt

3. Analytical Chemistry and Control Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority , Cairo , Egypt

4. Radioactive Waste Management Unit, Hot Laboratories, and Waste Management Center , Egyptian Atomic Energy Authority , Cairo , Egypt

Abstract

Abstract Using batch and column procedures, the present work investigated the sorption behaviour of 137Cs and 152+154Eu by bentonite phosphate modified with nickel (BPN) sorbent. The kinetic data obey pseudo-1st-order for 137Cs and follow pseudo-2nd-order for 152+154Eu. Various sorption isotherm models were used to analyze equilibrium data. The thermodynamic functions reflect an endothermic and spontaneous sorption process. HCl (about 95.35 %) and CaCl2 (about 98.13 %) showed the optimum eluents for the complete recovery of both 137Cs and 152+154Eu, respectively. Finally, column data show that 137Cs and 152+154Eu may be loaded on BNP sorbent and separated from an aqueous solution using a variety of HCl concentrations as eluent. The obtianed results revealed that BNP sorbent is suitable for recovering 137Cs and 152+154Eu from low-level radioactive waste effluents (LLW).

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2023-0168/pdf

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