AS THE RESTRICTIONS BY GOVERNMENTS WORLDWIDE ON LOWERING OF SULFUR CONTENT IN TRANSPORTATION FUELS ARE GETTING MORE STRINGENT, THE SEARCH FOR ALTERNATIVES TO CONVENTIONAL HYDRODESULFURIZATION (HDS) PROCESS IS ATTRACTING NUMEROUS STUDIES ON DESULFURIZATION. IN THE PRESENT WORK, WE REPORT STUDIES ON SULFUR REMOVAL TO ACCEPTABLE LEVELS BY USING ADSORPTION PROCESS AT ROOM TEMPERATURE. Y-ZEOLITES, ION EXCHANGED WITH METAL IONS THAT ARE CAPABLE OF COMPLEXATION, HAVE BEEN STUDIED FOR THEIR USEFULNESS IN DESULFURIZATION OF DIESEL. NI-Y ZEOLITE WAS PREPARED BY SOLIDSTATE ION EXCHANGE (SSIE) OF H-Y ZEOLITE USING NI(NO3)2 6H2O.NI-Y ZEOLITE EXHIBITED A HIGH CAPABILITY FOR THE DESULFURIZATION OF GASOLINE AT AMBIENT CONDITIONS. THESE RESULTS SHOW THE IMPORTANCE OF INSERTING TRANSITIONS METALS IN THE ZEOLITIC STRUCTURE TO ENHANCE THE ADSORPTION OF BOTH AROMATIC AND SULFUR CONTAINING COMPOUNDS IN ORGANIC LIQUID MIXTURES, WHICH SHOWS PROMISE TO MEET ENVIRONMENTAL STANDARDS IN TRANSPORTATION FUELS.