In this research, a chelating cellulose was synthesized through grafting ADA on the molecular structure of cellulose, its adsorption performance and adsorption mechanism was detaily studied. ADA chelating cellulose has amnion and carboxyl groups on its molecular structure. The structure of the ADA chelating cellulose was characterized by scanning electron microscopy(SEM)and Fourier transform infrared(FTIR). ADA chelating cellulose were used to adsorb the heavy metal ions in aqueous phase. The adsorption isotherm can be well described by the Langmuir equation and the adsorption kinetics fitted to the pseudo-second-order model．The thermodynamic parameters(ΔG°,ΔH°,ΔS°)indicated that the adsorption was spontaneous and endothermic process with increased entropy, and higher temperature would benefit the adsorption. At 318 K, its the equilibrium adsorption capacity for Cu2 +, Cd2 +, Ni2 +, was 44.61mg/g, 28.45 mg/g and 31.12 mg/g. ADA cellulose adsorption of heavy metal was mainly a chemical adsorption process, and its adsorption was fast and stable. The adsorbent can be repeatedly utilized with no significant loss of adsorption capacity．

Study on the synthesis of ADA chelating cellulose and its adsorptive capability

253rd National Meeting (2017)

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