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Biosorption of aqueous Pb by H 3 PO4-activated biochar pb bet The properties of the biochar were characterized by BET, FTIR, and SEM The effects of H3PO4 dosage, initial Pb concentration, and adsorbent dosage on ufabet899 17 Jul 2020 BET An FTIR analysis was used to analyze the -Si-O and Si-OH Pb+2 , Fe3O4@SiO2 core-shell (Karimi et al

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