| 氨基硫脲改性山竹壳对Cd2+. Pb2+的吸附 |
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| 引用本文： | 黄晓东,刘明华,林春香.氨基硫脲改性山竹壳对Cd2+. Pb2+的吸附[J].环境科学与技术,2012,35(5):24-27,55. |
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| 作者姓名： | 黄晓东 刘明华 林春香 |
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| 作者单位： | 1. 闽江学院化学与化学工程系,福建福州,350108
2. 福州大学环境与资源学院,福建福州,350108 |
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| 基金项目： | 国家自然科学基金，闽江学院科技启动项目 |
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| 摘 要： | 采用氨基硫脲改性山竹壳,制备新型的改性山竹壳吸附剂,研究其对Cd2+、Pb2+的吸附性能。结果表明,吸附Cd2+、Pb2+的适宜条件为:pH 6.0,吸附时间120 min。改性后山竹吸附剂对Cd2+、Pb2+的吸附容量能有了很大程度的提高,Cd2+、Pb2+最大吸附量分别达到39.37、57.14mg/g。吸附过程可以很好地用准二级动力学方程描述,吸附等温线用Langmuir方程的拟合效果优于Freundlich方程。
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| 关 键 词： | 山竹壳 氨基硫脲 改性 吸附 重金属 |
Adsorption of Cd2+ and Pb2+ on Mangosteen Shell Modified by Thiosemicarbazide |
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| HUANG Xiao-dong
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LIU Ming-hua
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LIN Chun-xiang.Adsorption of Cd2+ and Pb2+ on Mangosteen Shell Modified by Thiosemicarbazide[J].Environmental Science and Technology,2012,35(5):24-27,55. |
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| Authors: | HUANG Xiao-dong LIU Ming-hua LIN Chun-xiang |
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| Institution: | 1.Department of Chemistry and Chemical Engineering,Minjiang University,Fuzhou 350108,China; 2.School of Environment and Resource,Fuzhou University,Fuzhou 350108,China) |
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| Abstract: | New modified mangosteen(MS) adsorbent was prepared by using thiosemicarbazide and the adsorption behavior of Cd2+ and Pb2+ on mangosteen shell was studied.Results showed that pH 6.0 and shaking time 120 min were the optimal conditions for adsorption of Cd2+ and Pb2+.The adsorption capacity of adsorbent could be greatly improved after modified,with the maximum adsorption capacity of Cd2+ and Pb2+ up to 39.37 and 57.14 mg/g respectively.The adsorption process followed a pseudo-second order equation and the equilibrium isotherm was best described by the Langmuir model rather than the Freundlich model. |
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| Keywords: | mangosteen shells thiosemicarbazide modification adsorption heavy metal |
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