In this study, adsorption of different monobasic and dibasic acids was performed on Almond shell carbon, which was used as an adsorbent, as it is serves as eco-friendly adsorbents. It has proven to be significantly effective with the provision of satisfactory adsorption capacities for the removal of pollutants from waste water. We have studied adsorption on different monobasic and dibasic acid by taking Almondshellcarbon as an adsorbent. The monobasic acids and dibasic acids under study were Acetic acid, Propionic acid, oxalic acid and Succinic acid. Almond shells have increasingly been explored as sustainable, low-cost, and efficient adsorbents for removing various pollutants from water. These agricultural by-products offer high porosity and surface area, particularly when converted into biochar or chemically modified. Recent studies emphasize their potential in adsorbing heavy metals, dyes, emerging contaminants, and nutrients like phosphates. Modifications such as activation with ZnCl₂ or incorporation into biochar composites further enhance adsorption capabilities. The experimental isotherm data were analyzed using Freundlich and Langmuir models. The adsorption isotherm for Langmuir adsorption isotherm and Freundlich adsorption isotherm was studied for different monobasic and dibasic acid by taking Walnut shellcarbon as an adsorbent.The results obtained when compared with different acids the conclusion obtained was compared with different monobasic acids (Acetic acid and Propionic acid) dibasic acids (oxalic acid, succinic acid). From the readings obtained we observed that extent of adsorption of propanoic acid is greater than acetic acid. i.e propanoic acid (0.01219) > acetic acid (0.011 is the presence of 2 CH2 group in succinic acid or absence of 2 CH2 group in oxalic acid.