Preparation and Characterization of Activated Carbon from Vegetable Waste by Microwave-Assisted and Conventional Heating Methods

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 AC 1 were investigated using N 2 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.

Mikrodalga Metodu Kullanılarak Kurutulan Havucun Bazı Kuruma Parametrelerinin Belirlenmesi

“…Microwave drying is an alternative drying method which provides advantages in terms of providing high heat conduction to the internal parts of the dried material, cleaning, energy gain, easy process control and the quick start and termination of the drying process [14]. Compared to conventional heating methods, microwave heating has advantages such as rapid heating, volumetric heating, and an easy-to-control heating process [15,16].…”