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| 金鱼藻对Cu2+的生物吸附特征 | |
| 引用本文： | 曾阿妍,颜昌宙,金相灿,王圣瑞,马小凡.金鱼藻对Cu2+的生物吸附特征[J].中国环境科学,2005,25(6):691-694. |
| 作者姓名： | 曾阿妍 颜昌宙 金相灿 王圣瑞 马小凡 |
| 作者单位： | 1. 吉林大学环境与资源学院,吉林,长春,130023;中国环境科学研究院湖泊生态环境研究中心,北京,100012 2. 中国环境科学研究院湖泊生态环境研究中心,北京,100012 3. 吉林大学环境与资源学院,吉林,长春,130023 |
| 基金项目： | 国家“973”项目(2002CB412307) |
| 摘 要： | 研究了沉水植物金鱼藻对Cu2 的吸附动力学及热力学特征.结果表明,金鱼藻对Cu2 的吸附在20min内达到平衡,吸附动力学的实验结果符合伪二级动力学方程,其相关系数达到0.9937,表明该吸附为多种反应同时作用的复杂过程.用Langmuir和Freundlich2种吸附等温式拟合吸附热力学的实验结果表明,以Langmuir模型拟合效果更好,相关系数为0.9977,其最大吸附量为7.79mg/g.在解吸实验中,各浓度组的解吸率均在1%以下,表明金鱼藻对Cu2 的吸持作用较强. |
| 关 键 词： | 沉水植物 生物吸附 Cu~(2 ) 伪二级动力学方程 吸附等温线 |
| 文章编号： | 1000-6923(2005)06-0691-04 |
| 修稿时间： | 2005年3月11日 |
The character of Cu2+ biosorption by Ceratophyllum demersum |
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| ZENG A-yan,YAN Chang-zhou,JIN Xiang-can,WANG Sheng-rui,MA Xiao-fan.The character of Cu2+ biosorption by Ceratophyllum demersum[J].China Environmental Science,2005,25(6):691-694. | |
| Authors: | ZENG A-yan YAN Chang-zhou JIN Xiang-can WANG Sheng-rui MA Xiao-fan |
| Affiliation: | ZENG A-yan1,2,YAN Chang-zhou2,JIN Xiang-can2*,WANG Sheng-rui2,MA Xiao-fan1 |
| Abstract: | The sorption kinetics and thermodynamics characters of submersed aquatic plant Ceratophyllum demersum for Cu2 were studied. Cu2 sorption by C. demersum reached balance within 20min, the test results of sorption kinetics conformed to the pseudo second order kinetics equation, with its relativity coefficient reaching 0.9937, this sorption was a complicated process of simultaneous action of many reactions. The test results of sorption thermodynamic that used Langmuir and Freundlich sorption isotherms for fittingness, resulted that Langmuir model fitting effect was better, with its relativity coefficient of 0.9977, and maximum sorption quantity of 7.79mg/g. In the desorption test, the desorption rates of each concentration group were all below 1%, indicating stronger sorption-holding action of C. demersum on Cu2 . |
| Keywords: | submerged aquatic plants biosorption Cu2 pseudo second order kinetics equation sorption isotherm |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
