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Green synthesis of iron nanoparticles is gaining considerable attention nowadays due to the cost effective and eco-friendly treatment technique. The aim of the present study is to prepare Mangifera indica leaf extracts, precursor, for synthesis of iron nanoparticles and to check its efficacy for environmental remediation of pollution. Characterization of the synthesized iron nanoparticles were done by UV–visible spectrophotometer, field emission scanning electron microscopy equipped with X-ray energy dispersive spectroscopy and Fourier transform infrared spectroscopy. The characterization results confirmed the formation of Fe-NPs and presented the best results at pH 2.16. Mangifera indica iron nanoparticles (MI-Fe-NPs) are visibly powerful in elimination of phosphates within side of wastewater with elimination performance of 91.89% on 14th day. On the alternative hand, the elimination efficiencies of ammonia …