A series of novel adsorbents composed of cellulose(CL)with Ca/Al layered double hydroxide(CCxA;where x represent the Ca/Al molar ratio)were prepared for the adsorption of anti-mony(Sb(V))and fluoride(F-)ions from aqueous solutions.The CCxA was characterized by Fourier-transform infrared spectroscopy(FTIR),Brunauer-Emmett-Teller(BET),elemen-tal analysis(CHNS/O),thermogravimetric analysis(TGA-DTA),zeta potential,X-ray photo-electron spectroscopy(XPS)and scanning electron microscopy with energy dispersive X-ray spectroscopy(SEM-EDX)analysis.The effects of varying parameters such as dose,pH,contact time,temperature and initial concentration on the adsorption process were inves-tigated.According to the obtained results,the adsorption processes were described by a pseudo-second-order kinetic model.Langmuir adsorption isotherm model provided the best fit for the experimental data and was used to describe isotherm constants.The maximum adsorption capacity was found to be 77.2 and 63.1 mg/g for Sb(V)and F-,respectively by CC3A(experimental conditions:pH 5.5,time 60 min,dose 15 mg/10 mL,temperature 298 K).The CC3A nanocomposite was able to reduce the Sb(V)and F-ions concentration in synthetic solution to lower than 6 μg/L and 1.5 mg/L,respectively,which are maximum contaminant levels of these elements in drinking water according to WHO guidelines.