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| Friedel层状化合物对正磷酸根的去除效应及其作用机制 | |
| 引用本文： | 戴迎春,张国芳,刘峰,钱光人.Friedel层状化合物对正磷酸根的去除效应及其作用机制[J].环境科学学报,2012,32(10):2450-2454. |
| 作者姓名： | 戴迎春 张国芳 刘峰 钱光人 |
| 作者单位： | 1. 上海市环境工程设计科学研究院有限公司,上海,200232 2. 上海市城市建设投资开发总公司,上海,200020 3. 上海大学环境与化学工程学院,上海,200444 |
| 基金项目： | 国家自然科学基金项目(No.20877053/B0703,20907029/B0703);国家科技支撑计划(No.2012BAC15B05);上海市科委科研计划项目(No.11dz1211302) |
| 摘 要： | 为了解Friedel化合物除磷的应用潜能,研究了Friedel化合物对正磷酸根的吸附动力学和吸附等温线,并结合反应后溶液中各离子浓度的变化和反应固相产物的XRD、红外光谱分析,探讨其除磷作用机理.结果表明:Friedel化合物对正磷酸根的吸附等温线符合Langmuir等温吸附方程,理论吸附容量为4.86mmol·g-1;Friedel化合物除磷作用机理主要为溶出钙离子的沉淀作用,同时存在氢氧化铝的固磷作用. |
| 关 键 词： | 层状双羟基复合金属氧化物(LDH) Friedel化合物 磷 |
| 收稿时间： | 2011/12/21 0:00:00 |
| 修稿时间： | 2012/2/20 0:00:00 |
Removal and mechanism of phosphate by Friedel phase |
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| DAI Yingchun,ZHANG Guofang,LIU Feng and QIAN Guangren.Removal and mechanism of phosphate by Friedel phase[J].Acta Scientiae Circumstantiae,2012,32(10):2450-2454. | |
| Authors: | DAI Yingchun ZHANG Guofang LIU Feng and QIAN Guangren |
| Institution: | Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200232;Shanghai Chengtou Corporation, Shanghai 200020;Shanghai Chengtou Corporation, Shanghai 200020;Shanghai University, Department of Environmental and Chemical Engineering, Shanghai 200444 |
| Abstract: | In order to understand the application potential of Friedel phase for phosphate removal,the adsorption behaviors of Friedel phase for phosphate from aqueous solution were examined by adsorption kinetic and isotherm adsorption.The results indicated that Friedel phase had a stong fixation capacity on phosphate.The adsorption isotherm data were well fitted with the Langmuir equation and the maximum adsorption amount of phosphate was 4.86 mmol·g-1.The main removal mechanism of Friedel phase on phosphate was precipitation,with hydroxyapatite as a product,and the aluminum hydroxide strengthened the removal of phosphate. |
| Keywords: | layered double hydroxides (LDH) Friedel phase phosphate |
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