Abstract
An Al(III)-loaded and Al(OH)3-coated chelating resin Lewatit TP 260 was utilized for the removal of F− from aqueous solutions. Both forms of resin showed superior properties in the removal of F−. Removal performances of such resins were investigated extensively by adsorption isotherms and kinetic tests. It was revealed that maximum adsorption capacity of Al(OH)3-coated resin (0.55 mg/g) was higher than Al(III)-loaded resin (0.40 mg/g). The adsorption kinetics of both resins fitted well with the pseudo-second-order equation. The initial adsorption rate of Al(OH)3-coated resin was approximately seven times greater than Al(III)-loaded resin. The equilibrium isotherms have been investigated by using Langmuir and Freundlich isotherm equations and the obtained experimental data were best described by Langmuir model. The removal of F− by both forms of resin was accomplished by an anion-exchange mechanism. In the presence of Cl− and SO42-, removal performances of resins did not vary however, when the Al(III)-loaded resin was used, the presence of NO3- species reduced the removal efficiency of such resin.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
