The efficiency of iron oxide nanoparticles (Fe3O4 MNPs) loaded on zeolite as adsorbent for advanced treatment of secondary effluent: An insight of adsorption isotherm and kinetic

Increasing levels of organic compounds(COD, BOD5)1 NO-3 and PO43- in sewage of wastewater treatment plant, today, impose a great challenge to the existing wastewater treatment process. This work presents treatment of secondary effluent by Fe3O4MNPs loaded on zeolite adsorbent (zeolite /Fe3O4MNPs). The synthesized material was characterized for the phase composition, quantitative description, surface morphology, and surface area, pore volume and pore diameter. The x-ray diffraction (XRD) used to find the crystal structure and to estimate size. The volume and surface area were 0.06 cm3g-1 and 20.74 m2g-1 for zeolite which were calculated by N2 vapor adsorption experiments and Brunauer-Emmett-Teller (BET) plot. The x-ray fluorescence (XRF) analysis showed SiO2 and Al2O3as main components of natural zeolite. The scanning electron micrograph (SEM) and XRD proved loading of zeolite with magnetite successfully. The influence of parameters such as pH, initial concentration, contact time and adsorbent dosage were surveyed and described in details. The equilibrium data fitted for isotherm and kinetic studies. The results observed that the adsorption followed Langmuir and pseudo second-order models. The equilibrium time was obtained between 60-80 min. According to Langmuir model, the maximum adsorption capacity was 3.7, 0.83, 0, 0.3 mg/g at pH = 3 and 10 g/L dose, for COD, BOD5, NO-3 and PO43- respectively. © 2015, International Journal of Pharmacy and Technology. All rights Reserved