| 硫脲改性榴莲壳对水溶液中Pb2+、Cd2+的吸附研究 |
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| 引用本文： | 黄晓东,娄本勇.硫脲改性榴莲壳对水溶液中Pb2+、Cd2+的吸附研究[J].西南农业学报,2012,25(1):266-270. |
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| 作者姓名： | 黄晓东 娄本勇 |
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| 作者单位： | 闽江学院化学与化学工程系,福建福州,350108 |
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| 基金项目： | 闽江学院科技启动项目(YKQ1005) |
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| 摘 要： | 采用硫脲改性榴莲壳,制备新型的改性榴莲壳吸附剂,研究其对Pb2+、Cd2+的吸附性能。结果表明,吸附Pb2+、Cd2+的适宜条件为:pH 6.0,吸附时间60 min。改性后榴莲壳吸附剂对Pb2+、Cd2+的吸附容量能有了很大程度的提高,Pb2+、Cd2+最大吸附量分别达到53.63、34.84 mg.g-1。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： | 榴莲壳 硫脲 改性 吸附 重金属 |
Study on Adsorption of Pb2+ and Cd2+ from Aqueous Solutions by Thiourea Modified Durian Shell |
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| HUANG Xiao-dong
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LOU Ben-yong.Study on Adsorption of Pb2+ and Cd2+ from Aqueous Solutions by Thiourea Modified Durian Shell[J].Southwest China Journal of Agricultural Sciences,2012,25(1):266-270. |
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| Authors: | HUANG Xiao-dong LOU Ben-yong |
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| Institution: | (Department of Chemistry and Chemical Eengineering,Minjiang University,Fujian Fuzhou 350108,China) |
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| Abstract: | The new modified durian shell(DS) adsorbent was prepared by using thiourea,the adsorption behavior of Pb2+ and Cd2+ on durian shell was studied.The result showed that pH 6.0 and shaking time 60 min were the optimal conditions for adsorption of Pb2+ and Cd2+.The adsorption capacity of adsorbent could be greatly improved after modified.The maximum adsorption capacity of Pb2+ and Cd2+ reached up to 53.63 and 34.84 mg·g-1,respectively.The adsorption process followed a pseudo-second order equation and the equilibrium isotherm was described by the Langmuir model rather than by the Freundlich model. |
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| Keywords: | Durian shell Thiourea Modification Adsorption Heavy metals |
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