| 硫酸铁改性颗粒活性氧化铝除氟的等温线研究 |
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| 引用本文： | 党丹,丁文明,程安国,刘书明,张旭.硫酸铁改性颗粒活性氧化铝除氟的等温线研究[J].中国化学工程学报,2011,19(4):581-585. |
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| 作者姓名： | 党丹 丁文明 程安国 刘书明 张旭 |
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| 作者单位： | 1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. School of Environment, Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by the Major National Science and Technology Special Project on Treatment and Control of Water Pollution(2009ZX07425-006); the State Key laboratory of Environmental Simulation and Pollution Control (09K04ESPCT) |
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| 摘 要： | The adsorption equilibrium of a fluoride solution on 1-2 mm granular activated alumina modified by Fe2(SO4)3 solution was investigated. The experiments were conducted using a wide range of initial fluoride concentrations (0.5 to 180 mg•L1 at pH ~7.0) and an adsorbent dose of 1.0 g•L1. The application of Langmuir and Freundlich adsorption isotherm models (linear and nonlinear forms) generally showed that a single Langmuir or Freundlich equation cannot fit the entire concentration gap. Experimental data on low equilibrium concentrations (0.1 to 5.0 mg•L1) was in line with both Langmuir and Freundlich isotherm models, whereas that of high equilibrium concentrations (5.0 to 150 mg•L1) was more in line with the Freundlich isotherm model. A new Langmuir- Freundlich function was used for the entire concentration gap, as well as for low and high concentrations.
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| 关 键 词： | Freundlich方程 Fe2(SO4)3 等温线模型 活性氧化铝 吸附平衡 水溶液 氟改性 颗粒活性炭 |
| 收稿时间： | 2010-11-23 |
| 修稿时间： | 2011-5-21
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Isotherm Equation Study of F Adsorbed from Water Solution by Fe2(SO4)3-modified Granular Activated Alumina |
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| Dan DANG,Wenming DING,Anguo CHENG,Shuming LIU,Xu ZHANG.Isotherm Equation Study of F Adsorbed from Water Solution by Fe2(SO4)3-modified Granular Activated Alumina[J].Chinese Journal of Chemical Engineering,2011,19(4):581-585. |
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| Authors: | Dan DANG Wenming DING Anguo CHENG Shuming LIU Xu ZHANG |
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| Affiliation: | 1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. School of Environment, Tsinghua University, Beijing 100084, China |
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| Abstract: | The adsorption equilibrium of a fluoride solution on 1-2 mm granular activated alumina modified by Fe2(SO4)3 solution was investigated. The experiments were conducted using a wide range of initial fluoride concentrations (0.5 to 180 mg•L1 at pH ~7.0) and an adsorbent dose of 1.0 g•L1. The application of Langmuir and Freundlich adsorption isotherm models (linear and nonlinear forms) generally showed that a single Langmuir or Freundlich equation cannot fit the entire concentration gap. Experimental data on low equilibrium concentrations (0.1 to 5.0 mg•L1) was in line with both Langmuir and Freundlich isotherm models, whereas that of high equilibrium concentrations (5.0 to 150 mg•L1) was more in line with the Freundlich isotherm model. A new Langmuir- Freundlich function was used for the entire concentration gap, as well as for low and high concentrations. |
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| Keywords: | isotherm equation Fe2(SO4)3-modified granular activated alumina |
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