Immobilization of 2-(2-hydroxybenzylidinoamino) pyridin-3-ol on silica gel and application to industrial wastewater
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Desalination Publ
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, first silica gel surface was activated. The compound (3-Chloropropyl)triethoxysilane (CPTS) was immobilized on the modified SiO2 surface. 2-(2-Hydroxybenzylidinoamino) pyridin-3-ol (HBAP) compound was covalently immobilized on the modified silica gel compound (Si-CPTS). The newly prepared Si-CPTS-HBAP was characterized with a variety of techniques, including Fourier transform infrared spectroscopy and scanning electron microscopy. Batch method was used for the adsorption study of Cr(III) ions. The amount of adsorption of Cr(III) ions was controlled and detected by ultraviolet-visible spectrophotometer. The influences of concentration, temperature, contact time, and pH on the adsorption of Si-CPTS-HBAP were investigated. The results were obtained by Langmuir, Freundlich, and Dubinin-Radushkevich isotherm equations. In addition, thermodynamic parameters such as free energy (Delta H degrees), entropy (Delta S degrees), and enthalpy (Delta G degrees) were calculated from the sorption results and used to explain the adsorption mechanism. The optimum values obtained from this study are 6, 120 min, 0.05 g, and 303.15 K for pH, interaction time, adsorbent amount, and temperature, respectively. The results indicate that this adsorbent can successfully be employed in the separation of Cr(III) from aqueous solutions.
Açıklama
WOS:000462346000013
Anahtar Kelimeler
Silica Gel, Heavy Metal, Immobilization, Adsorption
Kaynak
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
147
Sayı
Künye
Çimen, A., Bilgiç, A. (2019). Immobilization of 2-(2-hydroxybenzylidinoamino) pyridin-3-ol on silica gel and application to ındustrial wastewater. Desalination and Water Treatment, 147, 116-124.
