华东交通大学学报2012，Vol.29Issue(2)：10-14,5.
核桃壳对模拟废水中Cr(Ⅵ)的动态吸附特性研究
Dynamic Adsorption Characteristics of Cr ( Ⅵ ) to Walnuts Shell
摘要
Abstract
The effect on treatment of the simulated wastewater whose concentration of Cr (VI) is 20 mg · L-1 by walnut shells are studied by means of dynamic absorption under different conditions. The experimental result shows that when the diameter is 1.0-1.6 mm in the normal room temperature, the adsorbent dosage is 5.0 g, the optimum condition is pH =1.0,the flow rate is about 3.0 mL· mim-1 ,the adsorption rate of Cr( VI) can be up to 98.88%. The concentration of Cr( VI) in 100mL simulated wastewater after adsorption is 0.224 mg·L-1, which can meet the standard of GB8978-1996 in Integrated wastewater discharge standard. In the meantime,model fitting is also explained in the paper, Thomas model can reflect the characteristics of the adsorption process. From the dynamic adsorption break through curve,penetrative point is 142min, while the failure point is 810 min.关键词
核桃壳/动态吸附/Cr(Ⅵ)Key words
walnut shells/ dynamic adsorption/ Cr( VI)分类
资源环境引用本文复制引用
鲁秀国,钟璐..核桃壳对模拟废水中Cr(Ⅵ)的动态吸附特性研究[J].华东交通大学学报,2012,29(2):10-14,5.基金项目
国家自然科学基金资助项目(51168013) （51168013）
