This study investigates the adsorption capacity of activated charcoal immobilized yarn against the methylene blue. Activated charcoal from refillable water filtration was used as a comparison. Activated charcoal was prepared by open and closed pyrolysis using a muffle furnace. The characterization of activated charcoal includes water content, adsorption of methylene blue, observations using a stereo microscope and Scanning Electrone Microscope. The results revieled that a 100 mesh activated charcoal powder with 75% Polyvinyl Acetate showed better properties in terms of thickness of the yarn layer, stability, and the surface morphology. The adsorption capacity test for the effect of the optimum time shows that activated charcoal from refilled water was optimum at 12 minutes, while activated charcoal regeneration, closed pyrolysis, and open pyrolysis took 9 minutes. The concentration of 1, 2, 3, and 4 ppm showed the absorbance results directly proportional to the increase in concentration. The greater the concentration, the higher the percentage of adsorption capacity. The comparative test for the type of activated charcoal with the best capacity is activated charcoal refill, regeneration, open pyrolysis, and closed pyrolysis, respectively. Based on the study results, it can be concluded that the immobilized activated charcoal yarn with 75% adhesive and 100 mesh activated charcoal powder can be effectively used to adsorb methylene blue, and open pyrolysis activated charcoal immobilized yarn can be regenerated