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چکیده
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Fluoride is one of the water-soluble ions that originate from natural and artificial sources, e.g., the industrial effluents discharged from plants producing aluminum and steel, semiconductors, and glass. To remove this anion, the fluoride ion selective electrode method is very suitable and advanced. In this research, a biodegradable polymeric membrane (cellulose acetate) containing quasi metal-organic framework (Quasi MOF UIO-66) has been used to remove fluoride from an aqueous solution. XRD analysis showed that the transformation of the metal-organic framework into a quasi-framework did not affect the crystal structure of the final material. FTIR analysis also showed that there were functional groups related to carbon, hydroxide and zirconium bonds in the structure, which indicated the correct synthesis. SEM images also revealed that the dispersion of nanoparticles in the composite is appropriate and favorable. The effect of different factors such as adsorbent content and fluoride pollutant concentration were investigated. The obtained results showed that in the study of adsorbent content, the best adsorption performance is for 0.1 g of adsorbent. On the other hand, In the initial concentration of fluoride, the lower the concentration, the better the adsorption efficiency.
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