| Yazarlar |
Mehmet Doğan
Balıkesir Üniversitesi, Türkiye |
Doç. Dr. Aydın TÜRKYILMAZ
Kastamonu Üniversitesi, Türkiye |
|
Mahir Alkan
Balıkesir Üniversitesi, Türkiye |
|
Özkan Demirbaş
Balıkesir Üniversitesi, Türkiye |
| Özet |
| We investigated the electrokinetic properties of sepiolite suspensions using the microelectrophoresis technique as a function of pH in the presence of various electrolytes such as, LiCl, NaCl, KCl, Cu(NO3)2, CaCl2, Pb(NO3)2, AlCl3 and Fe(NO3)3 and then, the adsorption of Cu(II) ion onto sepiolite from aqueous solutions as a function of pH, ionic strength and temperature. We found that (1) zeta potential of sepiolite suspensions increased with increasing ionic strength, (2) zeta potential values of sepiolite suspensions in different valence electrolyte solutions in the studied pH ranges increased with increase in electrolyte valence, (3) sepiolite had an isoelectrical point at pH 6.6, (4) the monovalent electrolytes showed similar behavior in the studied pH ranges but di- and trivalence electrolytes different behaviour, (5) Cu(II) ion adsorption increased with increase in pH and temperature, and decrease in ionic strength. Furthermore, experimental data were correlated reasonably well by the Langmuir adsorption isotherm. Adsorption enthalpy was calculated as 24 kJ/mol. The interaction between the sepiolite surface and Cu(II) ions was concluded to be a physical process. © 2009 Elsevier B.V. All rights reserved. |
| Anahtar Kelimeler |
| Adsorption | Adsorption isotherm | Copper | Electrolyte | Sepiolite | Zeta potential |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | DESALINATION |
| Dergi ISSN | 0011-9164 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2009 |
| Cilt No | 238 |
| Sayı | 1 |
| Sayfalar | 257 / 270 |
| Doi Numarası | 10.1016/j.desal.2008.02.017 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S0011916408007583 |
| Atıf Sayıları | |
| WoS | 59 |
| SCOPUS | 61 |
| Google Scholar | 81 |
