| 氨基磺酸铵-细菌纤维素对Pb~(2+)的吸附性能及机理 |
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| 引用本文： | 鲁敏,关晓辉,魏德洲,李彦英.氨基磺酸铵-细菌纤维素对Pb~(2+)的吸附性能及机理[J].东北大学学报(自然科学版),2011,32(7):1036-1040. |
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| 作者姓名： | 鲁敏 关晓辉 魏德洲 李彦英 |
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| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳,110819
2. 东北电力大学化学工程学院,吉林省吉林市,132012 |
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| 基金项目： | 国家自然科学基金资助项目(50174014); 辽宁省科技攻关项目(2009221006) |
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| 摘 要： | 为了提高细菌纤维素(BC)对重金属离子的吸附性能,以细菌纤维素为原料通过化学修饰的方法对其进行改性,制备了新型的重金属离子吸附剂氨基磺酸铵-细菌纤维素(ASBC).同时将制得的ASBC用于吸附重金属Pb2+,考察了其对Pb2+吸附性能,并对吸附机理进行了初步研究.结果表明:pH值是影响氨基磺酸铵-细菌纤维素对Pb2+吸附效果的重要参数,对Pb2+的吸附符合二级反应动力学特征和Langmuir吸附等温方程,并具有良好的线性,说明ASBC对Pb2+是典型的单分子层吸附;静电吸引和螯合作用是吸附的主要机理之一.
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| 关 键 词： | 氨基磺酸铵-细菌纤维素 细菌纤维素 吸附性能 吸附机理 Pb2+ |
Adsorption Property and Mechanism of Ammonium Sulfamate-Bacterial Cellulose to Pb~(2+) |
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| LU Min,GUAN Xiao-hui,WEI De-zhou,LI Yan-ying.Adsorption Property and Mechanism of Ammonium Sulfamate-Bacterial Cellulose to Pb~(2+)[J].Journal of Northeastern University(Natural Science),2011,32(7):1036-1040. |
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| Authors: | LU Min GUAN Xiao-hui WEI De-zhou LI Yan-ying |
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| Institution: | LU Min1,GUAN Xiao-hui2,WEI De-zhou1,LI Yan-ying2(1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China,2 School of Chemical Engineering,Northeast Dianli University,Jilin 132012,China.) |
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| Abstract: | The new adsorbent of ammonium sulfamate-bacterial cellulose(ASBC) was prepared through chemical modification of bacterial cellulose.ASBC was used for removing Pb2+ in order to study the adsorption property and mechanism of ASBC. The results showed that pH is a very important parameter to the adsorbed efficiency.The adsorption rate can be well fitted by pseudo-second rate model,the adsorption isotherm can be described by Langmuir model and they have good linear relationship.Typical single-molecule layer adso... |
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| Keywords: | ammonium sulfamate-bacterial cellulose(ASBC) bacterial cellulose(BC) adsorption property adsorption mechanism Pb2 |
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