Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+
No Thumbnail
Authors
Hercigonja, Radmila V.Vranješ-Đurić, Sanja

Mirković, Marija D.

Marković, Bojana M.
Maksin, Danijela D.

Marković, Bojana N.
Nastasović, Aleksandra B.
Article (Published version)

© 2018, Akadémiai Kiadó, Budapest, Hungary
Metadata
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 Kdvalue (2.06 × 10−4 cm3 g−1) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2adsorption 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, 215-225Projects:
- 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; 1588-2780
WoS: 000435823100022
Scopus: 2-s2.0-85048894765
URI
http://link.springer.com/10.1007/s10967-018-5893-2http://vinar.vin.bg.ac.rs/handle/123456789/7729