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In this research, the activated carbon (AC) was synthesized from the natural waste of almond dry leaves (ADL) using ZnCl₂ (1:1 ratio) activation combined with carbonization (450 °C/2h). The resultant almond dry leaves activated carbon (ADLAC) Surface area (681 m² g⁻¹), total pore volume (0.63 cm³ g⁻¹) was analyzed by Branueur-Emmett-Teller (BET) analysis. The further instrumental analyses revealed the surface texture with pore distribution, rich carbon content (78.18 wt%), and functional groups associated with the surface of ADLAC. The near-complete (>96%) dye removal efficiency of ADLAC has been recorded on the multi-dye solutions in the fixed bed column (FBC) experiment. The regeneration studies exhibited only 4–5% loss in the actual behavior of ADLAC on the fifth recycle. It is observed that the implemented condition of ZnCl₂ activation and carbonization can be an effective method to convert …