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The adsorption capacities of Parkia biglobosa chaff biomass (PBC) and Parkia biglobosa pulp biomass (PBP) for Cr(III), Cd(II), Ni(II), and Pb(II) ions were studied. Experimental data suggested the highest monolayer sorption capacities of PBC and PBP,
at equilibrium to be 170.07 mg/g at pH 7.0 and 324.68 mg/g at pH 6.0, for the uptake of Cr(III) ions, respectively. The minimum adsorption capacities...
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