| 磷酸根和硫离子在纳米铁表面的竞争吸附 |
| |
| 引用本文： | 茹春云,孟凡生,王业耀,杨琦.磷酸根和硫离子在纳米铁表面的竞争吸附[J].环境工程学报,2013,7(12):4841-4846. |
| |
| 作者姓名： | 茹春云 孟凡生 王业耀 杨琦 |
| |
| 作者单位： | 1. 中国环境科学研究院水污染控制技术研究中心, 北京 100012;2. 中国地质大学(北京)水资源与环境学院, 北京 100083;1. 中国环境科学研究院水污染控制技术研究中心, 北京 100012;1. 中国环境科学研究院水污染控制技术研究中心, 北京 100012;3. 中国环境监测总站, 北京 100012;2. 中国地质大学(北京)水资源与环境学院, 北京 100083 |
| |
| 基金项目： | 环保公益性行业科研专项项目（201009009-04） |
| |
| 摘 要： | 通过纳米铁对磷酸根和硫离子的单吸附和竞争吸附的研究，从吸附动力学和吸附等温线两个方面分析并验证了其吸附特性和模式。分析表明，相对于磷酸根，纳米铁对硫离子的吸附能力更强，在竞争条件下居优势地位。采用准一级和准二级吸附动力学方程对实验数据进行模拟分析，结果表明，纳米铁对磷酸根和硫离子的吸附符合二级动力学方程。吸附等温线分析采用Freundlich和Langmuir吸附等温线方程模拟分析，分析结果表明，纳米铁颗粒对磷酸根的吸附符合Freundlich吸附模式，而对硫离子的吸附符合Langmuir吸附模式。
|
| 关 键 词： | 纳米铁 吸附动力学 吸附等温线 竞争吸附 磷酸根 硫离子 |
Competitive adsorption of phosphate and sulfide on nanoscale iron surface |
| |
| Ru Chunyun,Meng Fansheng,Wang Yeyao and Yang Qi.Competitive adsorption of phosphate and sulfide on nanoscale iron surface[J].Techniques and Equipment for Environmental Pollution Control,2013,7(12):4841-4846. |
| |
| Authors: | Ru Chunyun Meng Fansheng Wang Yeyao and Yang Qi |
| |
| Institution: | 1. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;2. School of Water Resource and Environment, China University of Geosciences, Beijing 100083, China;1. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;1. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;3. China National Environmental Monitoring Center, Beijing 100012, China;2. School of Water Resource and Environment, China University of Geosciences, Beijing 100083, China |
| |
| Abstract: | In this study,the research on single adsorption and competitive adsorption of phosphate and sulfide by nanoscale iron was carried out,and the adsorption characteristics and mode were analyzed and verified by the adsorption kinetics and adsorption isotherm. It showed that the adsorption ability of sulfide by nanoscale iron was stronger than that of phosphate,and sulfide was in the dominant position under the condition of competitive adsorption. Using pseudo-first order and pseudo-second order adsorption kinetics equations to simulate and analyze experimental data,it showed that the target ions absorbed by nanoscale iron conformed to the second order dynamics equation. Adsorption isotherm was simulated and analyzed based on Freundlich and Langmuir adsorption isotherm equation,and the analysis results demonstrated that adsorption of phosphate by nanoscale iron conformed to Freundlich adsorption mode and showed the characteristic of physical adsorption,whereas sulfide adsorption conformed to the Langmuir adsorption mode and displayed chemical absorption. |
| |
| Keywords: | nanoscale iron adsorption kinetic adsorption isotherm competitive adsorption phosphate sulfide |
|
| 点击此处可从《环境工程学报》浏览原始摘要信息 |
| 点击此处可从《环境工程学报》下载免费的PDF全文 |
|
