Applied Chemistry Department, Faculty of Gas and Petroleum (Gachsaran), Yasouj University, Gachsaran, 75813-56001, Iran.
Department of Environmental Health Engineering, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran; Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.
Environ Res. 2022 Dec;215(Pt 3):113967. doi: 10.1016/j.envres.2022.113967. Epub 2022 Aug 17.
Antibiotic pollutants in water bodies, was studied to remove using an oxidized, nitrogen-doped, and FeO and NiFe-LDH decorated MWCNT (magnetic NiFe-LDH/N-MWCNTs) nanocomposite (NC). The novel, engineered NC was characterized by different techniques of SEM, XRD, TEM, EDX, and XPS and then examined under different main effective parameters of NC dose, levofloxacin (LVX) concentration, pH, time, and temprature. The experimentally obtained data then evaluated using the modeling approaches of RSM, GRNN, and ANFIS. The as prepared adsorbent showed an excellent adsorption performance (removal efficiency = 95.28% and adsorption capacity = 344.83-454.55 mg/g) under the respective values of the mentioned parameters of 0.152 g, 23.01 mg/L, 12.00 min, and 37.5 °C, respectively. The comparison of the models showed that although all of them accurately predicted the removal efficiency, ANFIS presented the best capability with R, RMSE, MSE, MAE, as well as AAD of 0.9998, 0.0082, -0.0004, 0.0069, 0.1322, respectively. The adsorption by the NC followed Freundlich isotherm (R = 0.9993) and PSO kinetic (>0.998) models, confirming a heterogenous chemisorption process. The thermodynamic parameters showed an endothermic and spontaneous nature for LVX removal by magnetic NiFe-LDH/N-MWCNTs NC. A high-performance efficiency, appropriate reusability (five times without loss of efficiency), as well as easy separation due to magnetic properties, makes the NC to a promising option in removing LVX from water.
水体中的抗生素污染物被研究使用氧化、氮掺杂和 FeO 和 NiFe-LDH 修饰的 MWCNT（磁性 NiFe-LDH/N-MWCNTs）纳米复合材料（NC）去除。新型工程 NC 通过 SEM、XRD、TEM、EDX 和 XPS 等不同技术进行了表征，然后在 NC 剂量、左氧氟沙星（LVX）浓度、pH 值、时间和温度等不同主要有效参数下进行了检查。然后使用 RSM、GRNN 和 ANFIS 的建模方法对实验获得的数据进行了评估。在提到的参数各自的值分别为 0.152 g、23.01 mg/L、12.00 min 和 37.5°C 的情况下，所制备的吸附剂表现出优异的吸附性能（去除效率为 95.28%，吸附容量为 344.83-454.55 mg/g）。模型的比较表明，尽管它们都能准确地预测去除效率，但 ANFIS 以 R、RMSE、MSE、MAE 和 AAD 分别为 0.9998、0.0082、-0.0004、0.0069 和 0.1322 的最佳能力表现出最佳能力。NC 的吸附遵循 Freundlich 等温线（R = 0.9993）和 PSO 动力学（>0.998）模型，证实了异质化学吸附过程。热力学参数表明，磁性 NiFe-LDH/N-MWCNTs NC 去除 LVX 是一个吸热和自发的过程。由于 NC 具有高性能效率、适当的可重复使用性（五次使用而不损失效率）以及易于分离的磁性，因此它是从水中去除 LVX 的一种有前途的选择。
