Removal of Eu3+ from simulated aqueous solutions by synthesis of a new composite adsorbent material.
Appl Radiat Isot
; 191: 110543, 2023 Jan.
Article
em En
| MEDLINE
| ID: mdl-36370470
ABSTRACT
The goal of this research is to separate and purify 152+154Eu generated from nuclear waste and/or research laboratories using synthesized composite material. Fourier infrared (FTIR), thermal gravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) surface area measurements were used to characterize the composite material. On the 152+154Eu sorption process, the impacts of pH, contact time, and initial feed concentration were also examined. The best 152+154Eu removal efficiency was 86.4% achieved at pH 4.5 and 180 min. The sorption data of 152+154Eu ions were investigated using kinetic modeling and sorption isotherm models, and it was clear that the pseudo second-order kinetics and the Langmuir isotherm are the best matches for the sorption process. The produced adsorbent capacity was 11.48 mg g-1. Application study demonstrated that the removal efficiency (%) reached 92.4, 92.2 and 95.2% of 152+154Eu (carrier free) from river, tab and groundwater, respectively. According to the findings of this investigation, the proposed polymer composite is a strong candidate for recovering radioactive 152+154Eu ions from liquid waste.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article