Research Article
Studies of Adsorption of Heavy Metals onto Spent Coffee Ground: Equilibrium, Regeneration, and Dynamic Performance in a Fixed-Bed Column
Figure 6
Effect of the flow rate on the breakthrough curves of (a) Cd2+, (b) Cu2+, and (c) Pb2+. Experimental conditions: 0.1 mM initial metal concentration, pH 4.5, and 25°C.
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(b) |
(c) |