BIOMASS-BASED ACTIVATED CARBON FROM ARECA CATECHU FOR DYE WASTEWATER TREATMENT
The synthesis of activated carbon from Areca Catechu or Pinang frond (PFAC) through physicochemical activation has been successfully investigated. The physicochemical activation was carried out by using potassium hydroxide (KOH) impregnation and carbon dioxide (CO2) gasification. The adsorption performance of PFAC was evaluated through the removal of methylene blue (MB) dye from synthetic wastewater. By using an experimental design, the results revealed that the activation temperature, activation time and KOH impregnation ratio (IR) were significant factors influencing the adsorption performance for all pollutants. The optimum preparation conditions for PFAC were; activation temperature 771 °C with activation time of 1.48 h and impregnation ratio of 1.94, respectively. The effects of adsorbate initial concentration (50-500 mg/L) and contact time (0-24 h) were evaluated through batch adsorption test. All dye adsorption uptakes increased with increasing initial concentration and contact time.
KEYWORD: activated carbon, Areca Catechu, physicochemical activation, methylene blue, adsorption