Continuous fixed-bed study was followed to measure the efficiency of bamboo leaf powder (BLP) as adsorbent for the removal of methylene blue (MB) from aqueous solution combining 2 different pore size adsorbent layers (45–63) μm (BLP) 1 gm, (63–125) μm (BLP) powder 2 gm at 3 cm bed height and initial MB concentration of 100-ppm at a constant flowrate. Spectrometry was done before and later the adsorption to find the total adsorbed quantities, concertation of the effluent. The Thomas model was applied to the adsorption of MB to predict the breakthrough curve. According to this model the breakthrough time (tb) was 155 min and bed exhaustion time (te) was 257 min. Total amount of MB absorbed by the adsorbent before getting to breakthrough time was found 22.9 g. This model study predicted the suitability of using low-cost adsorbent bamboo leaf powder for MB removal from aqueous solution and the effect of putting small pore size adsorbent below the relatively higher pore size adsorbent.