傅里叶变换红外光谱
吸附
动态光散射
四环素
水溶液
吸附
核化学
氢氧化物
弗伦德利希方程
扫描电子显微镜
插层(化学)
纳米片
材料科学
化学
分析化学(期刊)
无机化学
化学工程
纳米颗粒
色谱法
有机化学
纳米技术
生物化学
复合材料
抗生素
工程类
作者
Mohammad Mahdi Soori,Esmail Ghahramani,Hossein Kazemian,Tariq J. Al-Musawi,Mansur Zarrabi
标识
DOI:10.1016/j.jtice.2016.03.015
摘要
In this study, nanosheet-layered double hydroxide (LDH) was synthesized by hydrolyzing urea and used for adsorption of tetracycline antibiotic from an aqueous solution. The prepared adsorbent was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), and Fourier-transform infrared (FTIR) spectroscopy. XRD pattern analyses confirmed that the prepared adsorbent had a typical LDH nanostructure. The sorption rate was significantly affected by the solution pH, and higher removal efficiency was observed at pH 3. Under optimal condition, about 82% of tetracycline was removed. UV/VIS spectrum studies demonstrated that nitrate, carbonate, sulfate, and fluoride did not interact with the molecular structure of tetracycline. However, the results showed that all the foreign anions decreased the tetracycline removal efficiency by 7–30%. Four kinetic models were studied and best fitted onto experimental data with higher correlation coefficient for pseudo second-order model. In addition, results of the equilibrium study demonstrated that the removal of tetracycline followed the Freundlich isotherm model and the maximum sorption capacity was found to be 98.04 mg/g.
科研通智能强力驱动
Strongly Powered by AbleSci AI