| 改性柚皮纤维素对Pb2+的吸附动力学研究 |
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| 引用本文： | 罗均,葛静微,杨晓波,李小定. 改性柚皮纤维素对Pb2+的吸附动力学研究[J]. 食品科学, 2010, 31(3): 87-90. DOI: 10.7506/spkx1002-6300-201003019 |
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| 作者姓名： | 罗均 葛静微 杨晓波 李小定 |
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| 作者单位： | 华中农业大学食品科学技术学院 |
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| 基金项目： | 湖北省重点科技攻关计划项目(2006AA206A04) |
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| 摘 要： | 以柚皮为原料制备柚皮纤维素，并在一定条件下，与琥珀酸酐反应制取改性纤维素吸附剂(Cell 5 和Cell 6)，用于吸附水溶液中的Pb2+，研究改性柚皮纤维素对Pb2+ 的吸附平衡和吸附动力学特性。结果表明：Cell 5 和Cell 6对Pb2+ 的吸附符合动力学二级反应，生物吸附作用遵循Langmuir 等温吸附方程，Cell 5 和Cell 6 的最大吸附量分别达到142.86mg/g 和181.82mg/g。
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| 关 键 词： | 柚皮纤维素 改性 Pb2+ 生物吸附 吸附机理 |
| 收稿时间： | 2009-05-11 |
Adsorption Kinetics of Modified Pomelo Peel Cellulose towards Lead Ions |
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| LUO Jun,GE Jing-wei,YANG Xiao-bo,LI Xiao-ding. Adsorption Kinetics of Modified Pomelo Peel Cellulose towards Lead Ions[J]. Food Science, 2010, 31(3): 87-90. DOI: 10.7506/spkx1002-6300-201003019 |
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| Authors: | LUO Jun GE Jing-wei YANG Xiao-bo LI Xiao-ding |
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| Affiliation: | College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China |
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| Abstract: | Succinic anhydride modified pomelo peel cellulose as biosorbents,Cell 5 and Cell 6 were used to remove lead ions from aqueous solutions.Adsorption equilibrium and kinetics of lead ions from aqueous solutions onto modified pomelo peel cellulose were investigated.Adsorption kinetics of lead ions onto Cell 5 and Cell 6 obeyed pseudo-second-order equation.Adsorption equilibrium studies demonstrated that the bio-adsorption complied with Langmuir isotherm model.The maximum adsorption capacities of Cell 5 and Cell... |
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| Keywords: | pomelo peel cellulose modified lead ions bio-adsorption adsorption mechanism |
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