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 In this study, adsorption of Naphthalene from water was investigated using hydroxyapatite produced from catfish bones (CFHAP).  Characterization of the produced CFHAP was done using Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), Energy Dispersive X- ray Spectroscopy (EDX) and Brunauer Emmett and Teller (BET). Batch adsorption of naphthalene onto the produced CFHAP was carried out. The batch equilibrium adsorption data obtained for naphthalene was fitted to adsorption isotherm models (Langmuir and Freundlich) and kinetic models. The SEM image of CFHAP revealed no agglomerate with wider pores. The FTIR indicated the presence of OH- and PO43- as major functional groups while the EDX revealed the presence of Ca, P, and O. The surface area, pore volume and pore radius of CFHAP produced were 359 m2, 146 cm3 and 293 nm for the CFHAP. Batch adsorption studies indicated naphthalene maximum removal of 92% at 70 minutes and the maximum uptake of 93 % at 2 g dosage of CFHAP. The maximum percentage removal of naphthalene was 95.8% at initial concentration of 75mg/L while the maximum removal efficiency of 83% was obtained at pH of 10. Langmuir isotherm model (R2 = 0.993) best correlated the equilibrium adsorption data of naphthalene. Pseudo second order model gave the best fit with the highest correlation coefficient (R2= 0.9850) for naphthalene onto CFHAP.  Conclusively, catfish bones were found to be a good raw material for production of catfish bone hydroxyapatite which had good adsorption potential and the produced hydroxyapatite can be used effectively to remove Naphthalene in contaminated water.  
 
Keywords: Naphthalene, Catfish bone hydroxyapatite (CFHAP), Adsorption.