Malakootian Mohammad, Nasiri Alireza, Asadipour Ali, Faraji Maryam, Kargar Elham
Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran.
Department of Environmental Health, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran.
MethodsX. 2019 Jun 27;6:1575-1580. doi: 10.1016/j.mex.2019.06.018. eCollection 2019.
This study aimed to synthesize a ZnFeO@carboxymethyl cellulose (CMC) nanophotocatalyst using a simple, facile, and green hydrothermal method for ciprofloxacin (CIP) removal from aqueous solutions. At first, ZnFeO@CMC was synthesized using the hydrothermal method, and then it was characterized. To assay the photocatalytic activity of ZnFeO@CMC, its ability was investigated in CIP and total organic carbon (TOC) removal by considering the effect of some variables such as initial CIP concentrations (5-30 mg/L), pH (3-11), nanophotocatalyst loading (0.1-0.5 g), and reaction time (20-120 min). The kinetic performance of the process was assessed by the first order and Langmuir-Hinshelwood models. The concentration of CIP and TOC in the samples was determined using high performance liquid chromatography and a TOC analyzer, respectively. The influence of competitive compounds was examined on the efficiency of the nanophotocatalyst through its application for a real wastewater sample. Moreover, the reusability and chemical stability of ZnFeO@CMC were studied. Advantages of this technique are as follows: •ZnFeO@CMC as a high potent magnetically separable photocatalyst is designed by a green, simple, and fast hydrothermal method.•ZnFeO@CMC displays significant photocatalytic activity in photocatalytic degradation processes for ciprofloxacin removal.•ZnFeO@CMC exhibits good chemical stability and reusability.
本研究旨在采用一种简单、便捷且绿色的水热法合成ZnFeO@羧甲基纤维素（CMC）纳米光催化剂，用于从水溶液中去除环丙沙星（CIP）。首先，采用水热法合成ZnFeO@CMC，然后对其进行表征。为了测定ZnFeO@CMC的光催化活性，通过考虑一些变量的影响，如初始CIP浓度（5 - 30 mg/L）、pH值（3 - 11）、纳米光催化剂负载量（0.1 - 0.5 g）和反应时间（20 - 120分钟），研究了其去除CIP和总有机碳（TOC）的能力。通过一级模型和朗缪尔 - 欣谢尔伍德模型评估了该过程的动力学性能。分别使用高效液相色谱和TOC分析仪测定样品中CIP和TOC的浓度。通过将纳米光催化剂应用于实际废水样品，研究了竞争性化合物对其效率的影响。此外，还研究了ZnFeO@CMC的可重复使用性和化学稳定性。该技术的优点如下：•ZnFeO@CMC作为一种高效的可磁分离光催化剂，通过绿色、简单且快速的水热法设计而成。•ZnFeO@CMC在光催化降解过程中对环丙沙星的去除表现出显著的光催化活性。•ZnFeO@CMC具有良好的化学稳定性和可重复使用性。
