Affinity of Clinoptilolite‐based Zeolites towards Removal of Cd from Aqueous Solutions
Year: 2008
Type: article
Abstract: Cd removal from aqueous solutions using as‐received and pretreated forms of two different clinoptilolite samples (denoted GC and BC) was investigated and dissimilar sorption affinities were revealed. Equilibrium behavior of systems were modeled using six different adsorption isotherms. The maximum sorption capacities, as obtained from the solubility‐normalized Dubinin‐Astakhov model for as‐received samples, were determined as 0.18 meq/g and 0.12 meq/g for GC and BC, whereas 0.72 meq/g and 0.41 meq Cd/g was determined for their pretreated forms, respectively. Examination of the release of exchangeable cations into the solution at equilibrium and the change of pH were discussed in terms of varying prevalence of ion exchange, dissolution of the sorbent and adsorption.
Authors: K. Gedik, I. Imamoglu
Institution: Middle East Technical University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2032942567