Abstract: Collagen was extracted by enzymatic hydrolysis of bovine hide using pepsin. The collagen-tannin resin (C-TR) was prepared via reaction of collagen with black wattle tannin and aldehyde. The adsorption behaviors of C-TR to Pb(II) in aqueous solution was investigated. It was found that C-TR has high adsorption capacity to Pb(II). The adsorption capacity of C-TR (100mg) to Pb(II) was 0.34mmol/g at 303 K and pH value 4.5 when the initial concentration of Pb(II) solution (100mL) was 1.0mmol/L. The pH value had a significant effect on the adsorption capacity of C-TR to Pb(II) and a maximal adsorption capacity was achieved around pH value 4.5. The adsorption isotherms can be described by Freundlich equation, and temperature has almost no effect on adsorption capacity. Adsorption kinetics data can be described by a pseudo-second-order equation. The breakthrough point of Pb(II) in adsorption column was around 60mL when feeding rate of Pb(II) solution (1.0mmol/L) was 30mL/h.

Key words: collagen, tannin, resin, adsorbent, Pb(II)