研究了梧桐树皮活性炭对水中铬离子的吸附性能,探讨了其吸附机理,得出相关热力学参数。研究结果表明用0．4 g梧桐树皮活性炭处理50 mL的100 mg/L的Cr6+溶液,在25℃下,pH 2,静置吸附180 min后Cr6+的去除率可以达到99．8%；梧桐树皮活性炭对Cr6+的吸附符合Langmuir模型,10℃时的饱和吸附量为7．888 mg/g,为单分子层吸附。%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 concen-tration 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 adsorp-tion capacity was 7. 888 mg/g when the temperature was 10℃.
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