Studies on Methylene Blue Dye Adsorption, using Carbonized, Activated Carbon and Magnetic Carbonized Samples from Kentucky Coffee Tree Pods

Abstract

This study was carried out under various experimental conditions and rate of dye adsorption such as the solution pH, the adsorbent preparation concentration, and contact time to assess the potentiality of Kentucky coffee pods (KCP) for the removal of Methylene Blue (MB) dye from wastewater. From KCP, precursors were obtained by Carbonization at varying impregnation ratio, Magnetic Carbonization/Activation. Carbonization was performed at 5000C, KOH used for chemical activation impregnation at ratio 1:1 and 1:4. The activated carbon samples were heated at 8000C. The Magnetic Carbonized/activated Carbon samples were modified with 40 mL of ammonia at 600C at 350 rpm. The dye adsorbate was investigated with UV-Vis for 50 min. Moreover, the resultant samples were characterized using SEM, FT-IR and EDX elemental analysis. Carbonized (pH7 and pH10) and MAC1:4 (pH4, pH6, and pH8) precursor preparation had the best dye adsorbate compared to AC1:1 and AC1:4. This is greatly associated with the dye solution pH, adsorbent preparation conditions.