| 添加氯化铵改性污泥活性炭吸附镉、铅重金属的研究 |
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| 引用本文： | 孙孝龙,蒋文举,邵绍燕,卢然.添加氯化铵改性污泥活性炭吸附镉、铅重金属的研究[J].广州化工,2010,38(7):78-79,82. |
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| 作者姓名： | 孙孝龙 蒋文举 邵绍燕 卢然 |
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| 作者单位： | 1. 西南林业大学环境与工程系,云南,昆明,650224;四川大学建筑与环境学院,四川,成都,610065
2. 四川大学建筑与环境学院,四川,成都,610065 |
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| 基金项目： | 云南省教育厅科学研究项目，广西重点实验室研究基金 |
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| 摘 要： | 氯化铵作为添加剂、氯化锌作为活化剂制备高效吸附重金属离子的污泥活性炭,研究其对铅、镉重金属的吸附效果和机理,探讨了溶液pH值和吸附温度对重金属吸附的影响。结果表明:吸附量随pH值的增大而增大,温度对于低浓度金属离子的吸附量影响不大,温度的升高有利于铅的吸附;Langmuir和Freundlich吸附等温式均能较好模拟活性炭对镉重金属离子的吸附,铅的吸附则符合Freundlich吸附等温式。
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| 关 键 词： | 污泥 氯化铵 活性炭 铅 镉 |
The Adsorption Studies of Sludge Activated Carbon Modified by NH4Cl on Heavy Metals of Lead and Cadmium |
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| SUN Xiao-long,JIANG Wen-ju,SHAO Shao-yan,LU Ran.The Adsorption Studies of Sludge Activated Carbon Modified by NH4Cl on Heavy Metals of Lead and Cadmium[J].GuangZhou Chemical Industry and Technology,2010,38(7):78-79,82. |
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| Authors: | SUN Xiao-long JIANG Wen-ju SHAO Shao-yan LU Ran |
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| Affiliation: | 1 Department of Environmental Science and Engineering,Southwest Forestry University,Yunnan Kunming 650224;2 College of Architecture and Environment,Sichuan University,Sichuan Chengdu 610065,China) |
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| Abstract: | The activated carbon was prepared from sewage sludge with ZnCl2 as activation regent and NH4Cl as additive.The adsorption effect and mechanism of activated carbon for heavy metals of lead and cadmium were studied,and the adsorption effects of pH values and adsorption temperature were discussed.The results showed that the adsorption capacities increased with the rise of pH values,but had little changes with the rise of the temperature when the concentration of the heavy metal ions were low,and the increase of temperature was beneficial to the Pb absorption.The law for adsorption of activated carbon on cadmium can be well described by Langmuir and Freundlich models,but the absorption of Pb was conformed with Freundlich models. |
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| Keywords: | sewage sludge NH4Cl activated carbon lead cadmium |
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