The results show that the adsorption effect of N, o-magnetic carboxymethyl chitosan is the best when pH = 6; the adsorption capacity increases with the increase of temperature, indicating that the adsorption process is endothermic; the adsorption effect becomes worse with the increase of ion concentration; when other conditions are fixed, the adsorption effect is the best when the dosage of the adsorbent is 0.05 G.<br>
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