img
A novel Turkish natural zeolite clinoptilolite treated with hydrogen peroxide for Ni ions removal from aqueous solutions      
Yazarlar
Doç. Dr. Murat ÇANLI Doç. Dr. Murat ÇANLI
Ahi Evran Üniversitesi, Türkiye
Yüksel Abalı
Celâl Bayar Üniversitesi, Türkiye
Özet
The removal of Ni(II) from aqueous solution by batch adsorption technique using a novel Turkish zeolite from Akdere region was investigated. Activation of the zeolite was achieved with hydrogen peroxide. After elementary characterization of the adsorbent, the influence of contact time, pH, adsorbent amount, initial Ni(II) concentration, and temperature on the selectivity of the removal process was investigated. Results showed that increase in adsorbent dosage led to increase in Ni(II) adsorption due to increased number of adsorption sites. Freundlich model fitted the experimental data better than Langmuir model. Adsorption process was found to be highly pH dependent. The optimum pH for adsorption of Ni(II) was found to be 7. Adsorption equilibrium attained within 1 h time. The sorption of Ni(II) increased with rise of temperature. The adsorption process was spontaneous (Delta G degrees ads <0) and endothermic (Delta H degrees ads >0), supporting also the chemisorption is the rate-determining step.
Anahtar Kelimeler
Isotherms | Kinetics | Ni(II) removal | Thermodynamic values | Zeolite
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı DESALINATION AND WATER TREATMENT
Dergi ISSN 1944-3994
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 01-2016
Cilt No 57
Sayı 15
Sayfalar 6925 / 6935
Doi Numarası 10.1080/19443994.2015.1011707
Makale Linki http://www.tandfonline.com/doi/full/10.1080/19443994.2015.1011707