Copper ion imprinted chitosan/sodium carboxymethylcellulose composite adsorbent and preparation method thereof

The invention discloses a copper ion imprinted chitosan/sodium carboxymethylcellulose composite adsorbent and a preparation method thereof. The preparation method comprises the preparation process: preparing a sodium carboxymethylcellulose solution, adding an acidic solution, chitosan and a copper salt respectively, stirring and dissolving, slowly dropwise adding an alkaline solution to the solution pH of 5, separating out compound imprinted gel particles, then adding epichlorohydrin, crosslinking, then pickling to remove Cu, and carrying out alkali liquor solidification, water washing, ethanol washing and drying to obtain the copper ion imprinted chitosan/sodium carboxymethylcellulose composite adsorbent. The prepared composite adsorbent is gel particles with irregular shape and well-developed pore structure, has good adsorption and selectivity for Cu, has the advantages of reproducible reuse, simple preparation process, low energy consumption and environmental friendliness, and can be widely applied