Adsorption of Cu(II) ions from aqueous solution by hazelnut husk activated carbon prepared with potassium acetate |
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| Authors: | Mustafa Imamoglu Asuman Ozturk ?eyma Ayd?n Aynur Manzak Ali Gündo?du Celal Duran |
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| Institution: | 1. Chemistry Department, Sakarya University, Sciences &2. Arts Faculty, Sakarya, Turkey;3. Faculty of Engineering and Natural Sciences, Department of Food Engineering, Gumushane University, Gumushane, Turkey;4. Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, Trabzon, Turkey |
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| Abstract: | Hazelnut husk (HH), an agricultural waste, was converted to carbonaceous material by chemical activation using potassium acetate. The produced activated carbon (KAHHAC) was characterized by FTIR, SEM, N2 adsorption–desorption experiments, CHN elemental analysis, and determination of moisture, ash, and point of zero charge. KAHHAC was used for the batch adsorption of Cu(II) ions from aqueous solutions. Optimum pH and contact time were found to be 5.0 and 240 minutes, respectively. The adsorption equilibrium data were described well by the Langmuir equation providing 105.3?mg?g?1 Cu(II) adsorption capacity. The pseudo-second-order model successfully described the kinetic of Cu(II) adsorption by KAHHAC. The adsorbed Cu(II) onto KAHHAC was completely desorbed by 0.5?M nitric acid. In conclusion, HH activated carbon (AC) produced by the potassium acetate activation method is a very useful and efficient sorbent material for the removal of Cu(II) from aqueous solution. |
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| Keywords: | Activated carbon adsorption agricultural waste copper hazelnut husk |
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