Sorption of selected radionuclides from liquid radioactive waste by sorbents of biological origin: The alkaline earth alginates

Fuks, L.; Oszczak-Nowińska, Agata

doi:10.2478/nuka-2021-0023

Cited by 3 publications

(1 citation statement)

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“…Alginate has hydroxyl and carboxyl groups on its surface, and these groups have a great attraction for radionuclides [ 14 ] as well as heavy metal ions [ 15 , 16 ]. However, occasionally, their insufficient physical characteristics, as well as water solubility, limit their potential usage.…”

Section: Introductionmentioning

confidence: 99%

Fixed-Bed Column Adsorption Studies: Comparison of Alginate-Based Adsorbents for La(III) Ions Recovery

Fila

Kołodyńska

2023

Materials

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The paper investigated the adsorption of the packed-bed column with the alginate-based adsorbents (ALG-based adsorbents) such as alginate-biochar, alginate-clinoptilolite, alginate-lignin, and alginate-cellulose for La(III) ions’ removal. Fixed-bed adsorption studies with various alginate-based adsorbents were carried out and compared to the La(III) ions adsorption. The columns were filled with ALG-based adsorbent beads of approximately 1.1 ± 0.005 mm spherical shapes. The effects of the inlet concentrations on the breakthrough curves were studied in terms of the adsorption performance of the ALG-based adsorbents. The experimental data were correlated with the Adams-Bohart, Yoon-Nelson, Thomas, and Wolborska models to determine the best operational parameters. Based on the comparison of R2 values, the Thomas and Yoon-Nelson models were found to be more suitable than the Adams–Bohart and Wolborska models. In the desorption study, the ALG-based adsorbents packed columns showed the maximum desorption of La(III) just after passing 100 cm3 of 1 mol/dm3 HCl. Overall, the results show that ALG-based adsorbents could be used for continuous recovery of La(III) ions from aqueous solutions and were not only cost-effective but also environmentally friendly.

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Section: Introductionmentioning

confidence: 99%