The usage of nanoparticles synthesised using plant extract for the removal of heavy metal from water

Magnetic nanoparticles have strong adsorption properties due to their surface structure, as well as high achievements in desorption processes. Due to these properties, it can contribute to the reduction of the adsorbent material separation and reusability in engineering applications and the problems encountered in other widely used adsorbent materials. In the synthesis of nanoparticles, different methods are used such as co-precipitation, thermal decomposition, microemulsion, hydrothermal method and sonochemical synthesis; for the synthesis and stabilization of the materials, different chemicals and solvents are needed in these methods. Green chemistry is an approach aimed at researching, planning and developing methods to prevent the use and production of chemical materials and harmful substances to the environment and human health in processes. In this study, Fe3O4 nanoparticles were synthesized in accordance with the co-precipitation method; coated with peanut oil to stabilize the nanoparticles and their efficiency in the removal of nickel from water was investigated. SEM-EDX, FT-IR, TGA and XRD analyzes were performed to characterize the green synthesized material. According to the data obtained as a result of batch experiments, the nickel removal efficiency of the material at the optimum conditions (contact time: 50 min, nanoparticle dose: 8 g/L, pH: 8 and initial nickel concentration: 30 mg/L) was obtained as 96.6%. Freundlich and Langmuir isotherm experiments were performed and correlation coefficients were determined as 62.3% and 98.6%, respectively. In this study, it was aimed to minimize the harmful effect of the material to the environment in both the production stage after the use for water treatment and it is thought that the results obtained in this study will contribute the literature in this field.