Study on removal of bromine ions from drinking water by hydrothermal charcoal with turmeric residue
A hydrothermal carbon was prepared from waste turmeric residue,and its physicochemical structure was characterized by EPMA,FTIR,XRD and BET.The effects of hydrothermal carbon dosage,pH value,adsorption time and coexisting anions on Br-removal from drinking water were studied by static adsorption method.The results showed that after adsorption for 60 min,the adsorption capacity of hydro-thermal carbon to 5 mg/L Br-was 5.51 mg/g,the removal rate was 55.12％,under the conditions of 25 ℃,pH=7 and 0.5 g/L of the dosage of hydrothermal carbon.The adsorption of Br-by hydrothermal carbon fitted to Freundlich isothermal adsorption model,and its adsorption process could be better de-scribed by pseudo-second-order kinetic model.
万方数据
维普
