Magnetite-Functionalized Horse Dung Humic Acid (HDHA) for the Uptake of Toxic Lead(II) from Artificial Wastewater

Figure 7

(a) Profile of Pb(II) uptake onto MHDHA as a function of time and adsorption kinetics plot of 25 mg/L (0.12 mmol/L) Pb(II) onto 20 mg MHDHA by (b) Lagergren, (c) Ho, (d) proposed Santosa, and (e) proposed RBS kinetics model.

(a)

(b)

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(e)