Waste of all kinds, including hazardous and non-hazardous waste, biodegradable and non-biodegradable waste, is disposed of in landfills. The separation of leachate and the use of covers to protect the ground from pollution are two of the most crucial factors that must be taken into account in a landfill. An adsorbent property is being investigated for Recycled Concrete Aggregate (RCA), a byproduct of construction and demolition waste (C&D). This is being done for 45 days with the aid of adsorbents such sodium chloride, zeolite, and activated carbon at 3 g each. Paper pulp, adsorbents, unfiltered leachate, and an RCA sample with a size range of 6 mm were used in a pilot experiment. It was observed that adding RCA to the mix enhanced its performance. The study's conclusions show that sodium chloride, zeolite, and activated carbon have all steadily improved over time. However, the sample's pH has moved from an acidic range to a basic range, and its color and turbidity show less responsiveness. Even if the color and turbidity show less responsiveness, this was detected to ascertain whether there have been any changes in the color or turbidity of the sample that has been taken; more investigation will be done in the future.