| 煤泥对水溶液中Ca~(2+)的吸附性能研究 |
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| 引用本文： | 曹素红,冯莉,燕传勇,刘炯天,王中杰.煤泥对水溶液中Ca~(2+)的吸附性能研究[J].环境工程学报,2009,3(5). |
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| 作者姓名： | 曹素红 冯莉 燕传勇 刘炯天 王中杰 |
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| 作者单位： | 1. 中国矿业大学化工学院,徐州,221008
2. 中国矿业大学化工学院,徐州,221008;平朔煤炭工业公司,朔州,036006 |
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| 基金项目： | 教育部重大项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | 在静态条件下,研究了Ca2+在煤泥表面的吸附动力学.考察了不同Ca2+初始浓度的吸附实验,并对实验结果进行了动力学方程的拟合,结果表明,煤泥对Ca2+的吸附过程较好地符合准二级动力学方程.研究了初始Ca2+浓度、溶液pH值、振荡速度和煤泥质量对Ca2+吸附量的影响,实验结果表明:(1)煤泥对Ca2+吸附量随着Ca2+溶液浓度的增加而增大,Ca2+浓度大于3.828 mmol/L时,吸附鼍基本保持不变;(2)溶液pH<9时煤泥颗粒对Ca2+的吸附主要是静电吸附,pH>9时Ca2+在煤泥表面主要是沉淀吸附和一羟基吸附;(3)Ca2+在煤泥表面吸附的最佳振荡强度为150 r/min.
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| 关 键 词： | 煤泥 钙离子 吸附 |
Study on adsorption prorerties of Ca~(2+) on slime |
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| Cao Suhong,Feng Li,Yan Chuanyong,Liu Jiongtian,Wang Zhongjie.Study on adsorption prorerties of Ca~(2+) on slime[J].Techniques and Equipment for Environmental Pollution Control,2009,3(5). |
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| Authors: | Cao Suhong Feng Li Yan Chuanyong Liu Jiongtian Wang Zhongjie |
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| Institution: | 1.School of Chemical Engineering and Technology;China University of Mining and Technology;Xuzhou 221008;2.Pingshuo Mining Industry Company;Shuozhou 036006 |
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| Abstract: | The sorption kinetics of Ca 2+ on slime under static conditions was investigated.Study the sorption of Ca 2+ on slime at different Ca 2+ concentrations.The kinetics equations were used to analyze the experimental data and the results indicated that adsorption processes followed the pseudo-second-order kinetics equation well.The effect of Ca 2+ concentration,pH,rotate speed and slime mass on Ca 2+ adsorption were examed.The results showed:(1) Ca 2+ adsorption on slime increased with Ca 2+ primary concentrati... |
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| Keywords: | slime Ca 2+ adsorption |
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