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Adsorption of 2,4‐Dichlorophenoxyacetic Acid from an Aqueous Solution on Fly Ash
The adsorption of 2,4‐dichlorophenoxyacetic acid (2,4‐D) on fly ash was studied. The effects of adsorbent dose, contact time, pH, ionic strength, and temperature on the adsorption were investigated. Adsorption kinetic data were analyzed using pseudo‐first and pseudo‐second order models, and results showed that adsorption kinetics were better represented by the pseudo‐second order model. Adsorption isotherms of 2,4‐D on fly ash were analyzed using the Freundlich and Langmuir models. Thermodynamic parameters (ΔG°, ΔH°, and ΔS°) indicated that the adsorption process was spontaneous and endothermic. The negative values of ΔG° and the positive value of ΔH° indicate the spontaneous nature of 2,4‐D adsorption on fly ash, and that the adsorption process was endothermic. Results showed that fly ash is an efficient, low‐cost adsorbent for removal of 2,4‐D from water.
Adsorption of 2,4‐Dichlorophenoxyacetic Acid from an Aqueous Solution on Fly Ash
The adsorption of 2,4‐dichlorophenoxyacetic acid (2,4‐D) on fly ash was studied. The effects of adsorbent dose, contact time, pH, ionic strength, and temperature on the adsorption were investigated. Adsorption kinetic data were analyzed using pseudo‐first and pseudo‐second order models, and results showed that adsorption kinetics were better represented by the pseudo‐second order model. Adsorption isotherms of 2,4‐D on fly ash were analyzed using the Freundlich and Langmuir models. Thermodynamic parameters (ΔG°, ΔH°, and ΔS°) indicated that the adsorption process was spontaneous and endothermic. The negative values of ΔG° and the positive value of ΔH° indicate the spontaneous nature of 2,4‐D adsorption on fly ash, and that the adsorption process was endothermic. Results showed that fly ash is an efficient, low‐cost adsorbent for removal of 2,4‐D from water.
Adsorption of 2,4‐Dichlorophenoxyacetic Acid from an Aqueous Solution on Fly Ash
Kuśmierek, Krzysztof (author) / Świątkowski, Andrzej (author)
Water Environment Research ; 88 ; 231-238
2016-03-01
8 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2013
| British Library Online Contents | 2013