Adsorptive elimination of ofloxacin antibiotic from aqueous solution using green synthesized iron nanoparticles

The present research investigates the fabrication and application of Murraya koenigii (common name: curry neem) bark for nanoparticle preparation to eliminate ofloxacin, a commonly found antimicrobial macrolide compound, from aqueous solutions. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were subsequently employed for describing the nanoparticles. The nanoparticle's maximal ofloxacin adsorption capacity, as determined by the Langmuir isotherm model, was 21.28 mg/g. Investigations into kinetics and isotherms indicate that the adsorption of ofloxacin on the nanoparticle adheres to the pseudo-second-order kinetic and the Langmuir isotherm models. The spontaneous nature of the ofloxacin adsorption process onto the produced adsorbent was further demonstrated by thermodynamic measurements. Different variables, such as pH levels, contact periods, starting ofloxacin concentration and nanoparticle dose, were investigated in order to assess the adsorption capability of these nanoparticles. This study found that, under ideal circumstances, ofloxacin was eradicated with 93.8% efficiency. • The therapeutic compounds found in curry neem bark were used to create nanoparticles using a green chemistry technique. • Nanoparticles made from curry neem tree bark are remarkably effective at eliminating ofloxacin from water. • Adsorbent dose, concentration, stirring time and pH all have a significant impact on the adsorptive removal of ofloxacin. • Adsorption process is characterized by Langmuir adsorption isotherm and pseudo-second-order kinetic model.