Adsorption of cefixime from aqueous solution using Fenton process in presence of nanostructured magnetic alginate composite and nanostructured alginate-hydroxyapatite composite

The aim of this research was to study efficiency for removal of cefixime from aqueous solution with nanostructured magnetic alginate composites (Alg+m) and nanostructured alginate-hydroxyapatite (Alg+Hap) composites using heterogeneous fenton process. Catalysts were synthesized from hydroxyapatite extracted from fish scales, alginate and magnetic nanoparticles (Fe3O4). Catalysts amount, pH, initial concentration of cefixime and initial concentration of hydrogen peroxide were investigated. Based on the results at the optimum pH =3.3, removal percent of cefixime was 80.74% and 67.72% for Alg+m and Alg+Hap, respectively. Experiment results were revealed that removal of cefixime has reduced when the catalysts amount has increased and when the initial concentration of cefixime has enhanced. Degradation of antibiotic has improved until certain level of H2O2 concentration while it has decreased after 3mM H2O2 concentration for both of catalysts.