Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+
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2018
Authors
Hercigonja, RadmilaVranješ-Đurić, Sanja

Mirković, Marija D.

Marković, Bojana
Maksin, Danijela

Marković, Bojana N.
Nastasović, Aleksandra

Article (Published version)

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Show full item recordAbstract
The adsorption properties of two zeolite types, faujasite (NaY, ZnY, CoY) and LTA-4A zeolite (NaA, ZnA, CoA), towards technetium were studied in batch static experiments. The Si/Al ratio, acidity, dealumination, chargebalance cations of zeolite, contact time and temperature determined the adsorption efficiency. The maximum removal efficiency of 98.8% and K (d) value (2.06 x 10(-4) cm(3) g(-1)) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2 adsorption is mainly due to the hydrogen bonds between protons of the zeolitic structural OH groups (Bronsted acid center) and oxygen from the TcO2 (-).
Keywords:
Technetium / Zeolite / Adsorption / KineticsSource:
Journal of Radioanalytical and Nuclear Chemistry, 2018, 317, 1, 215-225Publisher:
- Springer, Dordrecht
Projects:
- Magnetic and radionuclide labeled nanostructured materials for medical applications (RS-45015)
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
- Oxide-based environmentally-friendly porous materials for genotoxic substances removal (RS-172018)
DOI: 10.1007/s10967-018-5893-2
ISSN: 0236-5731