Synthesis and thermodynamic simulation of Zr Doped SrAl2O4 ceramic powders: enhanced adsorptive properties for antibiotic tetracycline
     
Yazarlar (2)
Prof. Dr. Pelin BARAN Yalova Üniversitesi, Türkiye
Doç. Dr. Mehmet BUĞDAYCI Yalova Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Materials Research Express
Dergi ISSN 2053-1591 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 08-2019
Cilt / Sayı / Sayfa 6 / 8 / 86506– DOI 10.1088/2053-1591/ab1ae4
Makale Linki http://stacks.iop.org/2053-1591/6/i=8/a=086506?key=crossref.8990cd4be8180614e94e7e306b7e92b9
Özet
The aim of this study was to synthesize Zr doped SrAl2O4 via combustion synthesis method. According to XRD analysis, SrO-Sr phases were eliminated after Zr doped into the structure. Batch experiments were performed to investigate various parameters such as Zr loading amount, solution pH and contact time. The experimental data were analyzed by different isotherm and kinetic models. Among which, the Langmuir adsorption isotherm model was found to be the best model at evaluating the isotherm data and the maximum adsorption capacity was found to be 49.50 and 75.19 mg g-1 for Zr-SrAl2O4-0 and Zr-SrAl2O4-20, respectively. The kinetic data showed that pseudo-second-order kinetic model was well suited for this case and 22 h was enough to reach the adsorption equilibrium. In an acidic medium, a slight adsorption was achieved, while in a basic medium the adsorption of tetracycline increased sharply due to electrostatic attraction between positively charged Zr-SrAl2O4-20 surface and negatively charged tetracycline. Response surface modeling with Box-Behnken experimental design was used to examine the effect of independent variables on dependent variable (qe). Solid/liquid ratio (x 1), pH (x 2) and temperature (x 3) were chosen as independent variables at three levels (-1, 0, 1). According to regression analysis of experimental data, a second-order polynomial was evaluated.
Anahtar Kelimeler
adsorption | pharmaceuticals | tetracycline | thermodynamic simulation | volume combustion synthesis | Zr doped SrAl2O4