Brine,which is used to produce high-purity magnesia,was purified by XSC-700 to remove boron.Boron adsorption capacity of XSC-700 was investigated by varying the initial boron concentration,temperature,resin/brine rati...Brine,which is used to produce high-purity magnesia,was purified by XSC-700 to remove boron.Boron adsorption capacity of XSC-700 was investigated by varying the initial boron concentration,temperature,resin/brine ratio and stirring speed,while keeping the diameter at constant.The results show that boron adsorption capacity increases with increasing boron concentration,temperature,and decreases with increasing resin/brine ratio.And the stirring speed could slightly affect the boron adsorption capacity.The adsorption kinetics obeys the pseudo-second-order model.Equilibrium data were both examined by Freundlich and Langmuir isotherm equations and it can be well represented by the Freundlich isotherm equation.展开更多
基金Project(2008BAB35B04) supported by the National Key Technology R&D Program of China
文摘Brine,which is used to produce high-purity magnesia,was purified by XSC-700 to remove boron.Boron adsorption capacity of XSC-700 was investigated by varying the initial boron concentration,temperature,resin/brine ratio and stirring speed,while keeping the diameter at constant.The results show that boron adsorption capacity increases with increasing boron concentration,temperature,and decreases with increasing resin/brine ratio.And the stirring speed could slightly affect the boron adsorption capacity.The adsorption kinetics obeys the pseudo-second-order model.Equilibrium data were both examined by Freundlich and Langmuir isotherm equations and it can be well represented by the Freundlich isotherm equation.