img
Removal of Phosphate from Aqueous Solution Using Anion Exchange Resin: Equilibrium Isotherms and Kinetics       
Yazarlar
Cennet Korkmaz
Dr. Öğr. Üyesi Gökçe Didar DEĞERMENCİ
Türkiye
Doç. Dr. Nejdet DEĞERMENCİ
Türkiye
Özet
Phosphate removal before discharging wastewater into the receiving environment is important since eutrophication has become an environmental problem on a global scale. In this study, phosphate ion removal from aqueous solutions was investigated using a strong anion exchange resin, Purolite A200E. The effects of initial phosphate ion concentration, initial pH value of the solution, resin dosage, stirring speed, presence of some anions in solution, and temperature on the ion exchange process were researched. Resin dosage, stirring speed, and temperature increases were determined to increase the phosphate removal rate. The highest phosphate removal efficiency was observed in the pH interval 7–9. With initial phosphate concentration of 10 and 20 mg/L, 1.50 g/500 mL resin dosage fully removed phosphate at the end of 120 min. However, at phosphate concentrations higher than 20 mg/L, increasing phosphate concentrations caused a reduction in removal efficiency. The competitive anion with the most effect on phosphate removal was sulfate while adding bicarbonate did not affect phosphate removal. Pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models were used to assess experimental data. Kinetic studies revealed that the ion exchange process can be explained better by the PFO kinetic model. Equilibrium isotherm data were analyzed with the Freundlich and Langmuir equations, and the Freundlich isotherm model fitted the equilibrium data better.
Anahtar Kelimeler
Eutrophication | Ion exchange | Phosphate removal | Purolite A200E
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı FIBERS AND POLYMERS
Dergi ISSN 1229-9197
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 11-2023
Cilt No 24
Sayı 11
Sayfalar 3753 / 3760
Doi Numarası 10.1007/s12221-023-00355-w
Makale Linki https://link.springer.com/article/10.1007/s12221-023-00355-w#citeas