Department of Environmental Sciences, Faculty of Meteorology, Environment, and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Department of Environmental Sciences, Faculty of Meteorology, Environment, and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Int J Biol Macromol. 2023 Dec 31;253(Pt 1):126699. doi: 10.1016/j.ijbiomac.2023.126699. Epub 2023 Sep 4.
The antibiotics and metal ions in the contaminated water bodies must be removed using appropriate methods for sustainable development. In this study, the multifunctional carboxymethyl cellulose/graphene oxide/polyaniline (CMC/GO/PANI) hybrid thin film was synthesized and utilized for adsorptive scavenging of (Cu(II) and oxytetracycline (OTC) from wastewater. The prepared thin films' morphology, chemical compositions, functionality, and surface charge were analyzed by well-known physicochemical techniques. The adsorption process of the selected model pollutants was examined as a function of reaction time, Cu(II), and OTC solution pH, concentrations, and temperatures. Results showed that CMC/GO/PANI hybrid thin film had higher Cu(II) and OTC adsorption than CMC, GO/CMC, and PANI/CMP thin films due to the multifunctional synergetic effect. The adsorption kinetic data were fitted to the pseudo-second-order model. Redlich-Peterson isotherm model well interpreted Cu(II) and OTC scavenging equilibrium data. Energetically, the adsorption was spontaneous and endothermic for both pollutants. The multifunctional CMC/GO/PANI thin film was recycled and reused seven times during adsorption-desorption cycles. The study outcomes demonstrated that CMC/GO/PANI thin film could be reused multiple times for large-scale wastewater purification.
受污染水体中的抗生素和金属离子必须使用适当的方法去除，以实现可持续发展。在这项研究中，合成了多功能羧甲基纤维素/氧化石墨烯/聚苯胺（CMC/GO/PANI）杂化薄膜，并将其用于从废水中吸附去除（Cu(II)和土霉素（OTC）。通过多种熟知的物理化学技术对所制备的薄膜的形貌、化学成分、功能和表面电荷进行了分析。研究了所选模型污染物的吸附过程，考察了反应时间、Cu(II)和 OTC 溶液 pH 值、浓度和温度等因素对吸附的影响。结果表明，CMC/GO/PANI 杂化薄膜对 Cu(II)和 OTC 的吸附性能高于 CMC、GO/CMC 和 PANI/CMP 薄膜，这是由于多功能协同效应的原因。吸附动力学数据符合准二级动力学模型。Redlich-Peterson 等温模型很好地解释了 Cu(II)和 OTC 的吸附平衡数据。从能量角度来看，两种污染物的吸附都是自发和吸热的。多功能 CMC/GO/PANI 薄膜在吸附-解吸循环中可重复使用七次。研究结果表明，CMC/GO/PANI 薄膜可多次重复使用，用于大规模废水净化。
