Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 53, Issue 7, Pages 1058-1064Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2017.1304961
Keywords
Adsorption; chitosan; cobalt; strontium
Funding
- Institute of Chemistry Timisoara of Romanian Academy [2]
- Romanian National Authority for Scientific Research, CNCS - UEFISCDI [PN-II-RU-TE-2014-4-1398]
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We briefly describe the adsorbent performance of the chitosan complex with aminophosphonic groups and cobalt in the removal process of Sr2+ ions from aqueous solutions. The strontium adsorption was studied as a function of pH, contact time, and initial strontium concentration. Adsorption isotherms such as Langmuir, Freundlich, Dubinin-Radushkevich, and Temkin were used to analyze the equilibrium data at different concentrations. The kinetics of the Sr2+ sorption was analyzed using the pseudo-first-order and pseudo-second-order kinetic models. The results clearly indicate that the chitosan complex with aminophosphonic groups and cobalt is an efficient adsorbent with respect to its capacity to absorb Sr2+ ions from aqueous solutions.
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