The potential of Pindiga bentonitic clay for phenol adsorption and photocatalytic degradation was explored. The clay was treated with oxalic acid and calcined at 1000°C, demonstrating effective phenol adsorption and degradation under visible light. Various analyses, including X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and surface area measurements, were conducted. Acid-treated clays, especially those treated for 60 minutes (PB-60), exhibited higher surface areas (363.61 m²/g) compared to raw (PB) and calcined (PBC) clays. Phenol adsorption kinetics were studied using pseudo-first and pseudo-second order models, with the data fitting the Freundlich model well, indicating heterogeneity in the adsorption sites. PB-60 exhibited the best monolayer coverage and phenol affinity. Adsorption efficiency decreased as pH rose from 5 to 11, with optimal adsorption occurring at lower pH values. Increased catalyst dosage also enhanced adsorption. For photocatalytic degradation, the Langmuir-Hinshelwood model was applied, with PB-60 showing superior degradation of phenol compared to PB, PBC, and PB-5 under visible light. The optimal catalyst dosage for photocatalysis was found to be 2.5g/l. The study highlights the potential of Pindiga bentonitic clay, particularly the PB-60 variant, as an effective adsorbent and photocatalyst for phenol removal from aqueous solutions.