Abstract: The adsorption property of Cr6+ by sycamore bark activated carbon was studied. The related thermodynamic parameters were obtained. The research results showed that using 0.4 g sycamore bark activated carbon for the treatment of 50 mL Cr6+ solution concentration of 100 mg/L, under the condition of temperature, pH and adsorption time of 25℃, 2.0 and 180 min, the removal rate of Cr6+ reached to 99.8%. Sycamore bark activated carbon adsorption of Cr6+ conformed to the Langmuir model, and it the saturated adsorption capacity was 7.888 mg/g when the temperature was 10℃.

Key words: sycamore bark, biomass, adsorption, modification