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An amino chitosan absorbent has been prepared with monoethylamine, chitosan, catalyst, cross-linking agent, hydroxylpropyl chlorination agent and amination agent. This paper discusses the effect of monoethylamine modification on the amino content in chitosan absorbent, as well as its effect on the absorption capacity of absorbent for Cu2+ and Zn2+; and investigates the absorption kinetics of chitosan and amino chitosan for Cu2+ and Zn2+. The results indicate that the amino content of modified porous microspheric chitosan is higher than that of chitosan; its absorption capacity for Cu2+ and Zn2+ increases with the rise of temperature and changes with pH, and there is no obvious difference in absorption capacity of Zn2+ between chitosan and modified chitosan

Preparation of Porous Chitosan Microsphere Absorbent and Research on Its Absorption Ability for Cu2+ and Zn2+