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Cited 13 time in webofscience Cited 15 time in scopus
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Selective strontium adsorption using synthesized sodium titanate in aqueous solutionopen access

Authors
Kim, GyuhyeonLee, Dae SungEccles, HarryKim, Su MinCho, Hyun UkPark, Jong Moon
Issue Date
22-Jun-2022
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.12, no.29, pp.18936 - 18944
Indexed
SCIE
SCOPUS
Journal Title
RSC ADVANCES
Volume
12
Number
29
Start Page
18936
End Page
18944
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/1155
DOI
10.1039/d2ra02494b
ISSN
2046-2069
Abstract
Amorphous sodium titanates were synthesized using a mid-temperature sol-gel method for evaluation as selective adsorbents of strontium in the presence of cesium or metal cations (Al3+, Mg2+, Ca2+, and Mn2+) from aqueous solution. Synthesized sodium titanate showed high adsorption capacity and selectivity for strontium. The maximum adsorption capacity of strontium by sodium titanate was 193.93 mg g(-1) in aqueous solution containing an initial concentration of 5 mM (438.60 mg L-1) strontium and 5 mM (666.67 mg L-1) cesium, and this sodium titanate removed 99.9% of the strontium and 40.67% of cesium from an aqueous solution that had an initial concentration of 1.14 mM (100 mg L-1) strontium and 0.75 mM (100 mg L-1) cesium. Strontium adsorption by synthesized sodium titanate followed pseudo-second-order kinetics and a generalized Langmuir isotherm model, and reached an adsorption equilibrium within 1 h with high adsorption capacity at equilibrium. Adsorbed strontium onto synthesized sodium titanate showed the behavior of forming a strontium titanate structure with a titanate frame via surface precipitation.
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해양과학대학 (해양환경공학과)
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