Adsorption of Cu(II) and Zn(II) onto Activated Carbon from Oil Palm Empty Fruit Bunch Prepared by Two-Step Acid Treatment and Microwave-Assisted Pyrolysis

<div>A proposed mechanism of the adsorption process of Cu(II) and Zn(II) onto activated carbon. R-OH+CuSO4⟶R-O-Cu+H2SO4. R-COOH+CuSO4⟶R-COO-Cu+H2SO4. R-OH+Zn(NO3)2⟶R-O-Zn+HNO3. R-COOH+Zn(NO3)2⟶R-COO-Zn+HNO3.</div>

Adsorption Science & Technology

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Figure 7

Figure 7: Adsorption of Cu(II) and Zn(II) onto Activated Carbon from Oil Palm Empty Fruit Bunch Prepared by Two-Step Acid Treatment and Microwave-Assisted Pyrolysis 

Figure 7 | Adsorption of Cu(II) and Zn(II) onto Activated Carbon from Oil Palm Empty Fruit Bunch Prepared by Two-Step Acid Treatment and Microwave-Assisted Pyrolysis 