论文部分内容阅读
以活性炭纤维作为去除水中镉离子的吸附剂。考察了振荡时间、活性炭纤维用量、水样pH对吸附效果的影响。并通过等温吸附平衡实验作出了吸附等温线 ,采用有关的等温吸附模式对吸附平衡实验数据作了线性模拟 ,对吸附规律进行了探讨。结果表明 ,振荡时间、活性炭纤维用量、pH是影响镉离子在活性炭纤维上吸附效果的主要因素 ,吸附效率随着振荡时间的延长、活性炭纤维用量的增加、pH的增大而增大。吸附容量随活性炭纤维用量的增加而减小。镉离子在活性炭纤维上的吸附规律可用Langmuir模式和Freundlich模式很好地描述。吸附形式呈单分子层且容易进行。结果表明 ,活性炭纤维对水中镉离子的吸附特性良好 ,可作为去除水中离子态镉的优良吸附剂。
Activated carbon fiber as water to remove cadmium ions adsorbent. The effects of shaking time, the amount of activated carbon fiber and the pH of water on the adsorption were investigated. Adsorption isotherms were obtained by isothermal adsorption equilibrium experiment. The adsorption isotherm data was used to simulate the adsorption equilibrium data and the adsorption laws were discussed. The results show that the oscillation time, the amount of activated carbon fiber and pH are the main factors affecting the adsorption of Cd2 + on activated carbon fiber. The adsorption efficiency increases with the increase of oscillation time and the amount of activated carbon fiber and pH. The adsorption capacity decreases with the increase of the amount of activated carbon fiber. The adsorption of cadmium ions on activated carbon fibers can be well described by Langmuir mode and Freundlich mode. The adsorption form is monolayer and easy to carry out. The results show that activated carbon fiber has good adsorption properties for cadmium ions in water and can be used as an excellent adsorbent for removing cadmium from water.