Fabrication of nanourchin-like of iron-manganese oxide composite for the removal of diclofenac sodium from aqueous solution

Abstract

In the current research, for the first time novel hierarchically porous nanostructure was used to remove diclofenac sodium (DCF) from an aqueous solution. The improvement of novel adsorbent materials for the useful treatment of pharmaceutical and individual care items has ended up one of the preeminent inquiries about issues in the environmental inquire about range. In this research, we first reported adsorption characteristic of DCF onto a novel adsorbent with a high surface area of 198 m2/g, synthesized Fe-Mn nanourchin-like structures, and compared it with the Fe-Mn smooth. Nanostructures are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR). The length and needle diameter of as-prepared nanocomposite ranged 145 and 12 nm, respectively. Adsorption performance of Fe-Mn nanostructure was examined for DCF removal in the batch process concerning initial concentration (15-90 mg/L), temperature (25°C), and pH (3 −10). The adjusted parameters were 60 mg/L, 25°C, 0.03 g, 3h, and 5 as concentration, temperature, amount of adsorbent, contact time and pH for the elimination of DCF with the greatest of 83% removal efficiency. DCF adsorption on Fe-Mn nanourchin-like was endothermic and entropically driven. The best representation of data was obtained by the Langmuir and Freundlich models. The maximum monolayer adsorption capacity of Fe-Mn for DCF at 15, 25, and 35°C was 116.2, 126.6, and 138.8 mg/g, respectively.