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Removal of heavy metals, such as lead ions, from water is important to protect human health and the environment. In this study, two samples of MnO2 were used as adsorbents to remove Pb2+ ions from aqueous solution. These two samples were prepared through a redox reaction between potassium permanganate (KMnO4) and ascorbic acid (MAS) or citric acid (MCI) as reducing agents, respectively. X-ray powder...
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