Research on Adsorption Properties of Modified Sawdust for Copper Ions
The modified sawdust were prepared by introducing amino into the surface of natural sawdust by chemical modification method to remove Cu2+ in waste water.The effects of adsorbent dosage,background ion concentration,pH value and adsorption time on the adsorption ability of modified sawdust for Cu2+ were studied.The results showed that the background ion concentration had little effect on the adsorption process,and the adsorption capacity of the modified sawdust could reach 85%of the maximum adsorption capacity after 60 min.In addition,nonlinear fitting was performed on the adsorption kinetics and adsorption isotherms of modified sawdust,and the results were in accordance with the quasi first order kinetic equation and the Freundlich isotherm adsorption model,respectively.
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万方数据
维普
