| 天然沸石对含镍废水的吸附研究 |
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| 引用本文： | 项小燕,林锡煌,袁秋兰. 天然沸石对含镍废水的吸附研究[J]. 龙岩学院学报, 2009, 27(5): 69-72,77 |
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| 作者姓名： | 项小燕 林锡煌 袁秋兰 |
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| 作者单位： | 1. 龙岩学院化学与材料系,福建,龙岩,364000
2. 国家海洋局海洋-大气化学与全球变化重点实验室,福建厦门,361000 |
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| 摘 要： | 采用天然沸石对含镍废水进行吸附特性研究。考察了沸石粒径、接触时间、镍的初始浓度及溶液pH值等因素对沸石吸附镍的影响。结果表明,吸附25min后吸附接近平衡,溶液pH在4～6范围内,沸石对Ni2+去除效果较好,沸石粒径减小,Ni2+初始浓度提高,镍的吸附量增大。沸石对Ni2+的吸附动力学及热力学研究表明,在一定的实验条件下,Ni2+在沸石表面主要以单分子层吸附为主,符合Langmuir吸附等温式且吸附过程遵循准二阶动力学吸附模型(相关系数R>0.999)。
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| 关 键 词： | 沸石 吸附 镍 |
Study on Adsorption of Nickel from Electroplating Wastewater |
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| XIANG Xiao-yan,LIN Xi-huang,YUAN Qiu-lan. Study on Adsorption of Nickel from Electroplating Wastewater[J]. Journal of Longyan Univercity, 2009, 27(5): 69-72,77 |
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| Authors: | XIANG Xiao-yan LIN Xi-huang YUAN Qiu-lan |
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| Abstract: | In the experiment of treating Ni2+ in wastewater by zeolite,the removal effects were studied in these fields,such as zeolite quantity and fine degree,pH value of wastewater,contact time,concentration of Ni2+.The results showed that after 25 minutes and with a pH value between 4-6,adsorption reached equilibrium and the exchange capacity of Ni2+ on zeolite increased dramatically with the increase of the initial concentration and decrease of zeolite size.The kinetic behavior and isotherms of Ni2+ adsorption on... |
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| Keywords: | zeolite adsorption Ni2+ |
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