Preparation of Phosphonate-functionalized Cellulose and Its Adsorption Enrichment Properties for Au(Ⅲ)
In order to treat the gold-containing wastewater generated from the gold smelting industry and realize its resource utilization,phosphonic acid functionalized cellulose(P-PC)was prepared by the reaction of poly-amine polyether-based methyl phosphonic acid with cellulose.The characterization was carried out using infrared spectroscopy(FT-IR)and scanning electron microscopy(SEM).The results showed that P-PC was successfully prepared.The adsorption performance of Au(Ⅲ)on P-PC in solution was investigated.The experimental results showed that the adsorption of Au(Ⅲ)by P-PC conformed to the pseudo-first-order kinetic model,the pseudo-second-order kinetic model and Langmuir isothermal adsorption model.The adsorption performance of P-PC on Au(Ⅲ)was optimal when the pH was 1.0.The adsorption capacity was still 0.5 mmol·g-1 after three adsorp-tion and desorption cycles.P-PC has potential application in the adsorption of Au(Ⅲ).
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