The comparison of charcoal activation processes using methylene blue adsorption

Abstract

A series of activation processes was performed on charcoal waste to absorb and remove methylene blue (MB) from polluted waters. The results were used to calculate the MB removal percentage and the surface coverage area. Both aspects are important indication of the activation process efficiency. The activated process with potassium chloride, potassium carbonate and water stream showed high adsorption efficiency with removal percentage of 90, 84 and 79% respectively and 24.5, 24.0 and 18.9 of m2 g-1 of surface cover area (θ) such surface area increment was considered an important aspect to evaluate the promising properties of activated charcoal to be use in water treatment plant.