Lead removal from aqueous solution by natural and pretreated clinoptilolite: Adsorption equilibrium and kinetics
| Autor: | Ahmet Günay, Ertan Arslankaya, İsmail Tosun |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Langmuir
Environmental Engineering Thermodynamic equilibrium Health Toxicology and Mutagenesis Thermodynamics Sodium Chloride Water Purification symbols.namesake Adsorption Environmental Chemistry Freundlich equation Waste Management and Disposal Equilibrium constant Clinoptilolite Aqueous solution Chemistry Pollution Gibbs free energy Ion Exchange Solutions Kinetics Lead Zeolites symbols Water Pollutants Chemical |
| Zdroj: | Journal of Hazardous Materials. 146:362-371 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2006.12.034 |
| Popis: | Adsorption of Pb(II) ions from aqueous solution onto clinoptilolite has been investigated to evaluate the effects of contact time, initial concentration and pretreatment of clinoptilolite on the removal of Pb(II). Experimental data obtained from batch equilibrium tests have been analyzed by four two-parameter (Freundlich, Langmuir, Temkin and Dubinin-Radushkevich), four three-parameter (Redlich-Peterson, Sips, Toth and Khan) isotherm models, and kinetic models including the pseudo-first order, the pseudo-second order and Elovich equations using nonlinear regression technique. Of the two-parameter isotherms, Temkin isotherm was the best to describe the experimental data. Three-parameter isotherms have higher regression coefficients (>0.99) and lower relative errors ( |
| Databáze: | OpenAIRE |
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