| 活化膨润土吸附Pb~(2+)离子的研究 |
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| 引用本文： | 夏畅斌,史红文.活化膨润土吸附Pb~(2+)离子的研究[J].矿产综合利用,2001(3). |
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| 作者姓名： | 夏畅斌 史红文 |
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| 作者单位： | 北京科技大学资源工程学院!北京100083，湘潭工学院环化所，湖南湘潭411201，湘潭工学院环化所!湖南湘潭411201 |
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| 基金项目： | 原煤炭工业部科技发展项目 !(97- 368 |
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| 摘 要： | 研究了热活化及酸活化的膨润土对重金属 Pb2 +离子的吸附。结果表明 ,活化膨润土对Pb2 +离子具有较强的吸附性能 ,p H值是影响吸附的主要因素 ,较高温度热活化的膨润土具有最大的吸附容量 ,基本符合 Langmuir吸附等温线 ,离子交换和表面络合反应是主要吸附形式
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| 关 键 词： | 膨润土 活化 铅 吸附等温线 |
Adsorption of Pb~(2+) Ion with Activated bentonite in Aqueous Solutions |
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| Abstract: | The adsorption of lead ion on natural bentonite heat treated at 110℃ or 200℃ and acid treated with H 2SO 4 in aqueous solutions respectively has been investigated under different conditions,such as initial solution pH and initial Pb 2+ ion concentration.The results show that activated bentonite has better adsorption capability,and the pH value is the main factor affecting adsorption;bentonite activated at higher temperature has the largest adsorption capability.The adsorption process in solution exhibits Langmuir behaviour and ion exchange and surface complex are chief adsorption form. |
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| Keywords: | Bentonite Activation Lead Adsorption isotherm |
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