Abstract：The heavey iron pollution is one of serious concerns of envionment protection of human being. In this experiment, the adsorption of sodium alginate to Cu2+ was studied. The results showed that sodium alginate has a good adsorption to Cu2+．The adsorbing equilibriums were reached within 10 minutes．The pH value of the solution had a great effect on the adsorption．When pH was about 6.0，the adsorbing effect was the best．The optional temperiture of adsorption of sodium alginateto Cu2+ was about 30℃.
