GREEN SYNTHESIS OF MAGNETITE NANOPARTICLES FOR TREATMENT OF POLLUTED WATERLINGAYYA HIREMATH1, NARENDRA KUMAR S.1, VIJAYA KUMAR G. AND GORDON BLACH
Treating polluted water has become major challenge as various heavy metals and pathogenic organisms causes human health problems and can present a major threat to the environment. The use of magnetite nanoparticles as a sorbent has shown promise as an emerging treatment of polluted water. In this study, a common weed plant (Lantana camara) was used for synthesis of magnetite nanoparticles (MNPs). Synthesized MNPs were characterized for physical properties and batch absorption studies were undertaken to assess the potential for removal of heavy metals, namely lead under varying conditions. Synthesized MPs were also screened for antimicrobial activity. The typical size of the MNPs was less than 100nm. These nanoparticles showed antibacterial activity against pathogenic microorganisms at concentrations between 0.75 mg/ mL and 1 NMP per mL of solution. When tested at pH7, a solution of Nano magnetite at a concentration of 0.1g/20 mL removed 89.2% of an aqueous concentration of lead (50 ppm) shaking at a speed of 100rpm for 60min. The adsorption data of magnetite nanoparticles fitted well with the Freundlich isotherm equation and suggests favourable adsorption for metal solutions. It was concluded that magnetite nanoparticles can serve as a potent material to treat polluted water. Based on these results continuous flow bed reactor was designed for treatment of metals and microbes from waste water.
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