| 邻菲咯啉改性膨润土吸附水中镉离子的研究 |
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| 引用本文： | 陈征贤,金晓英,苏锦,陈祖亮.邻菲咯啉改性膨润土吸附水中镉离子的研究[J].广州化学,2011,36(1):5-10. |
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| 作者姓名： | 陈征贤 金晓英 苏锦 陈祖亮 |
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| 作者单位： | 福建师范大学化学与材料学院,福建福州,350007 |
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| 基金项目： | 福建省发改委2009专项基金资助项目 |
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| 摘 要： | 通过邻菲咯啉改性膨润土,对水中镉离子进行吸附性能的研究.探讨了投加量、pH值、接触时间、温度等影响因素对改性膨润土吸附镉离子的影响.实验结果表明:在25℃,250 r/min,pH 5.5,NaNO3浓度0.01 mol/L,投加量为5.0 g/L,镉离子质量浓度100 mg/L的条件下,未改性膨润土对水中镉离子的吸附...
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| 关 键 词： | 膨润土 Cd2+ 邻菲咯啉 动力学 吸附 |
Absorption of Cadmuim(Ⅱ) Ions in Aqueous Solution Using 1,10-Phenanthroline-Modified Immobilized Bentonite |
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| CHEN Zheng-xian,JIN Xiao-ying,SU Jin,CHEN Zu-liang.Absorption of Cadmuim(Ⅱ) Ions in Aqueous Solution Using 1,10-Phenanthroline-Modified Immobilized Bentonite[J].Guangzhou Chemistry,2011,36(1):5-10. |
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| Authors: | CHEN Zheng-xian JIN Xiao-ying SU Jin CHEN Zu-liang |
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| Institution: | (College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China) |
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| Abstract: | Bentonite was modified with 1,10-phenanthroline and it was then used to investigate the adsorption behavior of cadmium(Ⅱ) ions from aqueous solutions.Influence factors of modified bentonite such as dosing,pH,contact time,temperature and kinetic adsorption of cadmium ions in aqueous solution were discussed.Experimental results show that the optimal condition was 25℃,250 r/min,pH 5.5,NaNO3 0.01 mol/L,dose 5.0 g/L,adsorption quantity of modified bentonite was 19.64 mg/g while unmodified one was only 14.36 mg/g,increased by 36.77 %.Dose and pH was observably influent parameter on adsorption of cadmium iron.The kinetic data(R≥0.998) indicated that the adsorption fits well with the pseudo-second-order kinetic model. |
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| Keywords: | bentonite Cd2+ 1 10-phenanthroline kinetics adsorption |
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