Biosorption of Pb II and Cd II from aqueous solution using green alga Ulva lactuca biomass
Yazarlar (2)
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Prof. Dr. Mustafa TÜZEN
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | Journal of Hazardous Materials |
| Dergi ISSN | 0304-3894 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI |
| Dergi Grubu | Q4 |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2008 |
| Cilt No | 152 |
| Sayı | 1 |
| Sayfalar | 302 / 308 |
| DOI Numarası | 10.1016/j.jhazmat.2007.06.097 |
| Özet |
| The biosorption characteristics of Pb(II) and Cd(II) ions from aqueous solution using the green alga (Ulva lactuca) biomass were investigated as a function of pH, biomass dosage, contact time, and temperature. Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models were applied to describe the biosorption isotherm of the metal ions by U. lactuca biomass. Langmuir model fitted the equilibrium data better than the Freundlich isotherm. The monolayer biosorption capacity of U. lactuca biomass for Pb(II) and Cd(II) ions was found to be 34.7 mg/g and 29.2 mg/g, respectively. From the D-R isotherm model, the mean free energy was calculated as 10.4 kJ/mol for Pb(II) biosorption and 9.6 kJ/mol for Cd(II) biosorption, indicating that the biosorption of both metal ions was taken place by chemisorption. The calculated thermodynamic parameters (ΔG°, ΔH° and ΔS°) showed that the biosorption of Pb(II) and Cd(II) ions onto U. lactuca biomass was feasible, spontaneous and exothermic under examined conditions. Experimental data were also tested in terms of biosorption kinetics using pseudo-first-order and pseudo-second-order kinetic models. The results showed that the biosorption processes of both metal ions followed well pseudo-second-order kinetics. © 2007 Elsevier B.V. All rights reserved. |
| Anahtar Kelimeler |
| Biosorption | Cadmium(II) | Green alga | Isotherm | Kinetics | Lead(II) | Thermodynamics | Ulva lactuca |
Science Direct
Biosorption of Pb II and Cd II from aqueous solution using green alga Ulva lactuca biomass
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| WoS | 266 |
| SCOPUS | 307 |
| Google Scholar | 437 |