removal of nickel(ii) ions, low-level pollutants, and total bacterial colony count from wastewater by composite nanofiber film

This study clarifies the important role of nanofibers produced from polyacrylonitrile after reinforcement with iron nanoparticles (γ-fe2o3), to expand the applications of these fibers and to combine their ability to remove nickel (ii) from aqueous solutions with their ability to remove pollutants such as total suspended solids, total nitrogen, chemical oxygen demand, and cyanide as well as killing the bacteria in wastewater. the results of the absorption of nickel (ii) after treatment of the aqueous solution were obtained by an atomic absorption spectrometer type (aas-7000) and a spectrometer type (hach dr2800) after treating samples of wastewater obtained pollutant absorption results. the adsorption kinetic parameters results for nickle (ii) proved that the rates of increase in the maximum absorption capacity were 43.27 to 133.5 and from 74.63 to 178.571 mg/g when increasing the initial concentration (10-50 mg/l) for first and second order models. the ph, contact time, electrical conductivity, and initial concentration are good indicators of adsorption efficiency of nickel (ii), the high removal efficiency was 23.96 % at low initial concentration. also, an increase the reduction rate and increased in tn: tp ratio were significant to increase the reduction rate of the total bacteria up 90 % at 8 hours.