Abstract
In this research, the use of vegetable waste has been investigated as a cheap and available precursor of activated carbon. Activated carbons were prepared through chemical activation by conventional and microwave heating systems. The most effective activated carbon was obtained by KOH activation–conventional heating using eggplant as a precursor. The chemical and textural characteristics of AC1 were investigated using N2 adsorption–desorption measurements, SEM, FTIR spectroscopy, TGA, EDX and CHN elemental analysis. The success of the prepared adsorbent in the removal of a textile dye (Burderm Orange II) and the effect of temperature and pH on the removal efficiency were studied. The best fit was obtained with a Langmuir isotherm model, and a maximum monolayer adsorption capacity of BOII was 833.33 mg g−1 at 40°C for pH 2. Kinetic parameters, such as rate constants, equilibrium adsorption capacities and related correlation coefficients, were calculated.
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