Environmental Science and Industrial Development Department, Faculty of Postgraduate studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt.
Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt.
Environ Sci Pollut Res Int. 2020 Apr;27(11):12256-12269. doi: 10.1007/s11356-020-07750-3. Epub 2020 Jan 28.
Pharmaceuticals are detected at trace levels in water. Their adverse effects on human health and aquatic ecosystems required novel pharmaceutical remediation methods for treating wastewater effluents. Layer double hydroxide (LDH) is abundantly available by simple preparation methods and with low costs. The extensive use of antibiotics nowadays leads to increasing the appearance of antibiotic resistance between bacteria and decreasing the effectiveness of antibiotics. In this work, the removal of one of these antibiotics named "oxytetracycline hydrochloride (OTC)" by Zn/Fe LDH was investigated. The Zn/Fe LDH before and after adsorption was characterized by X-ray diffraction, FT-IR analysis, zeta potential, particle size, BET surface area, HRTEM, FESEM, and XPS. The effects of different factors on the OTC adsorption performance were investigated. The removal percentage of OTC was 77.23% by Zn/Fe LDH. The isothermal and kinetic study of OTC adsorption was carried out at pH 6 at 25 °C using different models. The adsorption mechanism was investigated by Monte Carlo and molecular dynamic simulations.
药品在水中被检测到痕量水平。它们对人类健康和水生生态系统的不利影响需要新型的药物修复方法来处理废水。层状双氢氧化物 (LDH) 通过简单的制备方法大量可得，且成本低廉。如今，抗生素的广泛使用导致细菌之间的抗生素耐药性增加，并降低了抗生素的有效性。在这项工作中，研究了通过 Zn/Fe LDH 去除一种名为“盐酸土霉素 (OTC)”的抗生素。吸附前后的 Zn/Fe LDH 通过 X 射线衍射、FT-IR 分析、zeta 电位、粒径、BET 表面积、HRTEM、FESEM 和 XPS 进行了表征。考察了不同因素对 OTC 吸附性能的影响。在 pH 6 和 25°C 下，使用不同的模型进行了 OTC 吸附的等温线和动力学研究。通过蒙特卡罗和分子动力学模拟研究了吸附机制。
