| 核桃壳对废水中Cr(Ⅵ)的静态吸附特性研究 |
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| 引用本文： | 钟璐,鲁秀国,孟锋.核桃壳对废水中Cr(Ⅵ)的静态吸附特性研究[J].华东交通大学学报,2011,28(1):52-56. |
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| 作者姓名： | 钟璐 鲁秀国 孟锋 |
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| 作者单位： | 华东交通大学土木建筑学院,江西南昌,330013 |
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| 摘 要： | 采用废弃核桃壳对Cr(Ⅵ)浓度为20mg·L-1的模拟水样进行了静态吸附实验研究.实验结果表明,对于Cr(Ⅵ)浓度为20mg·L-1的50mL水样,当温度为25℃,采用粒径为1.0-1.6mm新疆核桃壳1.0 g、介质pH值为1.0、吸附时间为180min处理废水时,Cr(Ⅵ)的去除率可以达到99.3%.吸附后的水中C...
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| 关 键 词： | 吸附 核桃壳 Cr(Ⅵ) |
Static Absorption Experimental Study on Cr(Ⅵ)Removal in Wastewater by Walnut Shells |
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| Zhong Lu,Lu Xiuguo,Meng Feng.Static Absorption Experimental Study on Cr(Ⅵ)Removal in Wastewater by Walnut Shells[J].Journal of East China Jiaotong University,2011,28(1):52-56. |
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| Authors: | Zhong Lu Lu Xiuguo Meng Feng |
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| Institution: | (School of Civil Engineeriing and Architecture,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | The effect on treatment of 50 mL simulated wastewater whose concentration of Cr（Ⅵ） is 20 mg·L-1 by walnut shells are studied by means of static absorption under different conditions.The experimental results show that when the producing area of the is Xinjiang,the temperature is 25 ℃,the diameter of xinjiang wahut shellis 1.0-1.6mm,the adsorbent dosage is 1.0 g,the optimum condition is pH =1.0,adsorption time is about 180 minutes,the adsorption rate of Cr（Ⅵ） can be up to 99.3%.The concentration of Cr（Ⅵ） is 0.14 mg·L-1 after adsorption,which meets the Integrated Wastewater Discharge Standard GB8978—1996 standards for the first-class of pollutants.The adsorption of Cr（Ⅵ） rises as the temperature rises.In the meantime,the Adsorption isotherm,Langmuir adsorption isotherm and Freundlich adsorption isotherm are also explained in the paper.The result shows the Freundlich model can reflect the process of adsorption better than the Langmuir model. |
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| Keywords: | adsorption walnut shells Cr（Ⅵ） |
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