| ZrO2负载碳纳米管吸附去除水中氟的研究 |
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| 引用本文： | 王家宏,常娥,丁绍兰,韩晓晶.ZrO2负载碳纳米管吸附去除水中氟的研究[J].离子交换与吸附,2012,28(1):62-69. |
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| 作者姓名： | 王家宏 常娥 丁绍兰 韩晓晶 |
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| 作者单位： | 1. 陕西科技大学资源与环境学院,西安,710021
2. 陕西科技大学化学与化工学院,西安,710021 |
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| 基金项目： | 国家水专项《淮河流域水污染治理技术研究及集成示范项目》子课题，陕西科技大学博士科研启动基金，陕西科技大学研究生创新基金 |
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| 摘 要： | 以ZrO2负载多壁碳纳米管(ZrO2-MWCT)为吸附剂,系统研究了其对水中F-的吸附、脱附性能。结果表明,F-在ZrO2-MWCT吸附剂上的吸附等温线可以用Freundlich方程模拟,吸附动力学符合拟二级动力学方程,吸附速率随着F-初始浓度的提高而减低。当pH为4~5时,F-在ZrO2-MWCT吸附剂上的吸附量最大。水中阴离子的存在降低ZrO2-MWCT对F-的吸附量,不同阴离子对F-影响的大小顺序为:CO32->SO42->Cl->NO3-。吸附饱和的ZrO2-MWCT可用0.1mol/L的NaOH脱附再生,经4次再生后,其吸附量仍为14.55mg/g。
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| 关 键 词： | ZrO2负载碳纳米管 吸附 氟(F-) 脱附再生 |
ADSORPTIVE REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTION USING ZrO2 SUPPORTED ON MULTIWALL CARBON NANOTUBE |
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| WANG Jiahong
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CHANG E
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DING Shaolan
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HAN Xiaojing.ADSORPTIVE REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTION USING ZrO2 SUPPORTED ON MULTIWALL CARBON NANOTUBE[J].Ion Exchange and Adsorption,2012,28(1):62-69. |
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| Authors: | WANG Jiahong CHANG E DING Shaolan HAN Xiaojing |
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| Institution: | 1 College of Resource and Environment,Shaanxi University of Science & Technology,Xi’an 710021,China2 College of Chemistry and Chemical Engineering,Shaanxi University of Science & Technology,Xi’an 710021,China |
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| Abstract: | ZrO2 supported on multiwall carbon nanotube(ZrO2-MWCT) was prepared,and its adsorption and desorption behaviors for aqueous fluoride were investigated.Results showed that adsorption isotherm of F-onto ZrO2-MWCT could be modeled by Freundlich equation.The pseudo-second-order kinetics could fit the adsorption data very well and adsorption rate decreased with increasing initial F-concentration.The maximum adsorption amount of F-on ZrO2-MWCT was found to be at pH 4~5.The presence of anions in solution resulted in the suppressed F-adsorption onto ZrO2-MWCT,and the effect of different anions was in the order of CO32->SO42->Cl->NO3-.Fluoride loaded ZrO2-MWCT was regenerated by 0.1mol/L NaOH solution and F-adsorption amount was 14.55mg/g after four adsorption-regeneration cycles. |
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| Keywords: | ZrO2 supported on multiwall carbon nanotube Adsorption Fluoride Desorption and regeneration |
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