In this study, adsorption of different monobasic and dibasic acids was performed on Tamarind 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 Tamarind shell shell carbon as an adsorbent. The monobasic acids and dibasic acids under study were Acetic acid, Propionic acid, oxalic acid and Succinic acid. India is the largest producer of tamarind in the world According to Exportimportdata.in, India produces 162,000 metric tons annually, making it the top exporter of tamarind globally. Thailand is another major producer, known for its high-quality tamarind paste. Tamarind processing by – products include tamarind shell. Currently, these materials are disposed of in lands or used as soil amendments, which results in negative environmental impacts and phytotoxicity to plants, respectively. These materials need to be economically and environmentally managed. Tamarind 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 shell carbon 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 (0.01224) > acetic acid (0.01172). The reason behind the above conclusion is the presence of CH2 group in propanoic acid and absence of CH2 group in acetic acid. From the readings obtained we observe that the extent of adsorption of succinic acid is greater than oxalic acid. i.e, succinic acid (0.0126) > oxalic acid (0.01186) The reason behind the above conclusion is the presence of 2 CH2 group in succinic acid or absence of 2 CH2 group in oxalic acid.