Pharmaceutical pollution in water is the major cause of antibiotic resistance, so remediation of water from pharmaceuticals is a very important issue. Different methods are used for this purpose, with adsorption as one of the most preferred. Different adsorbents have been used for water treatment processes. Metal-organic frameworks that have highly porous structures have gained attention in the last decades. In this study, novel chromium fumarate (Cr-Fum) was prepared, and the efficiency of Cr-Fum was tested by ciprofloxacin (CPX) adsorption. Cr-Fum was prepared under reflux and characterized by scanning electron microscopy (SEM), X-ray diffraction spectroscopy (XRD), Fourier transform infrared spectroscopy (FTIR), thermal analysis (TGA), and differential scanning calorimetry (DSC). The general approach of the process was monolayer adsorption at low temperature and heterogeneous adsorption at high temperature. 2.5 mg of adsorbent was adsorbed 4.97 mg/g and 11.47% of CPX. 10 mg of Cr-Fum was adsorbed 0.82 mg/g and 7.27% of CPX. Partition coefficients were calculated and 0.07 mg/g/µM was found at 298 K. The reaction followed pseudo-first- and pseudo-second-order kinetic models. Thermodynamic analysis showed that the reaction is spontaneous and exothermic. Additional ions caused decreasing CPX adsorption, but this study showed that Cr-Fum has NaCl adsorption capacity. In future studies, NaCl adsorption should be investigated. Desorption studies were applied to Cr-Fum after the adsorption processes. 0.1 M NaOH and phosphate buffer (pH=7.4) solution were used as desorption eluents. The desorption period was chosen as 6 h. NaOH solution desorbed 67.38% of CPX at first cycle and buffer solution desorbed 26.87% of CPX at second cycle.

水体中的药物污染是导致抗生素耐药性的主要原因，因此药物中水的修复是一个非常重要的问题。为此目的使用了不同的方法，其中吸附是最优选的方法之一。不同的吸附剂已用于水处理过程。在过去的几十年中，具有高度多孔结构的金属有机框架受到了关注。本研究制备了新型富马酸铬（Cr-Fum），并通过环丙沙星（CPX）吸附测试了Cr-Fum的效率。在回流条件下制备 Cr-Fum，并通过扫描电子显微镜 (SEM)、X 射线衍射光谱 (XRD)、傅里叶变换红外光谱 (FTIR)、热分析 (TGA) 和差示扫描量热法 (DSC) 对其进行表征。该过程的一般方法是低温单层吸附和高温非均相吸附。2.5 mg 吸附剂吸附 4.97 mg/g 和 11.47% 的 CPX。10 mg Cr-Fum 吸附了 0.82 mg/g 和 7.27% 的 CPX。计算分配系数，在 298 K 时发现 0.07 mg/g/µM。反应遵循准一级和准二级动力学模型。热力学分析表明反应是自发的和放热的。额外的离子导致 CPX 吸附减少，但该研究表明 Cr-Fum 具有 NaCl 吸附能力。在未来的研究中，应研究 NaCl 吸附。在吸附过程之后，对 Cr-Fum 进行了解吸研究。0.1 M NaOH 和磷酸盐缓冲液 (pH=7.4) 溶液用作解吸洗脱液。解吸时间选择为 6 小时。