Husein Dalal Z, Hassanien Reda, Al-Hakkani Mostafa F
Chemistry Department, Faculty of Science, New Valley University, El-Kharga, 72511, Egypt.
Heliyon. 2019 Aug 21;5(8):e02339. doi: 10.1016/j.heliyon.2019.e02339. eCollection 2019 Aug.
The release of Non-Steroidal Anti-Inflammatory drugs (NSAIDs) such as Ibuprofen (Ibu), Naproxen (Nab) and Diclofenac (Dic) to the aquatic system cause serious environmental problems. In this study, green-synthesized copper nanoparticles (Cu NPs) have been used as nano-adsorbent for the removal of Ibu, Nab, and Dic from wastewater samples. Formation of Cu NPs was confirmed by different analytical techniques. The adsorption parameters such as temperature, pH, adsorbate concentration, adsorbent dose and contact time were studied. The best removal results were obtained at these conditions: temperature 298 K, pH = 4.5, 10.0 mg Cu NPs, 60 min. At these conditions, the removal percentage of Ibu, Nap, and Dic were found to be 74.4, 86.9 and 91.4% respectively. The maximum monolayer adsorption capacities were calculated as 36.0, 33.9 and 33.9 mg/g for Dic, Nap, and Ibu respectively. The kinetic studies conducted that the sorption process obeyed the second order kinetic model, while the thermodynamic results revealed that the adsorption process was spontaneous, endothermic (+23.8, +40.8 and +38.3 kJ/mol for Ibu, Nap and Dic respectively). The results revealed that green-synthesized copper nano-adsorbent may be used for the removal of the anti-inflammatory drugs from real wastewater efficiently.
布洛芬（Ibu）、萘普生（Nab）和双氯芬酸（Dic）等非甾体抗炎药（NSAIDs）排放到水生系统中会引发严重的环境问题。在本研究中，绿色合成的铜纳米颗粒（Cu NPs）已被用作纳米吸附剂，用于去除废水样品中的Ibu、Nab和Dic。通过不同的分析技术证实了Cu NPs的形成。研究了温度、pH值、吸附质浓度、吸附剂剂量和接触时间等吸附参数。在以下条件下获得了最佳去除效果：温度298 K，pH = 4.5，10.0 mg Cu NPs，60分钟。在这些条件下，Ibu、Nap和Dic的去除率分别为74.4%、86.9%和91.4%。双氯芬酸、萘普生和布洛芬的最大单层吸附容量分别计算为36.0、33.9和33.9 mg/g。动力学研究表明吸附过程符合二级动力学模型，而热力学结果表明吸附过程是自发的、吸热的（Ibu、Nap和Dic分别为+23.8、+40.8和+38.3 kJ/mol）。结果表明，绿色合成的铜纳米吸附剂可有效用于去除实际废水中的抗炎药。
