| 石英砂负载氧化铁吸附除锑的研究 |
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| 引用本文： | 许光眉,施周,邓军. 石英砂负载氧化铁吸附除锑的研究[J]. 环境化学, 2006, 25(4): 481-484 |
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| 作者姓名： | 许光眉 施周 邓军 |
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| 作者单位： | 湖南大学土木工程学院,长沙,410082;湖南大学土木工程学院,长沙,410082;湖南大学土木工程学院,长沙,410082 |
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| 基金项目： | 国家自然科学基金 , 高等学校博士学科点专项科研项目 , 科技部国际合作项目 |
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| 摘 要： | 考察了石英砂负载氧化铁(IOCS)在不同的实验条件下(无机阴离子种类及其离子强度、 pH值、IOCS投加量、温度等)对水溶液中锑的去除效果.结果表明:三种无机阴离子(NO-3,Cl-,SO2-4)对IOCS吸附锑的去除率、吸附容量以及反应速率几乎没有影响;在pH3-9范围内,锑的去除率达到90%.二级反应动力学模型及Langmuir等温吸附模型可分别较好地描述锑的吸附动力学及吸附等温线实验结果.随着温度的增加,反应速率以及吸附容量也随之增加.
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| 关 键 词： | 负载 氧化铁 锑 吸附 |
| 收稿时间： | 2005-08-17 |
| 修稿时间： | 2005-08-17 |
REMOVAL OF ANTIMONY FROM WATER BY IRON-OXIDE COATED SAND |
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| XU Guang-mei,SHI Zhou,DENG Jun. REMOVAL OF ANTIMONY FROM WATER BY IRON-OXIDE COATED SAND[J]. Environmental Chemistry, 2006, 25(4): 481-484 |
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| Authors: | XU Guang-mei SHI Zhou DENG Jun |
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| Affiliation: | College of Civil Engineering, Hunan University, Changsha, 410082, China |
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| Abstract: | Removal of antimony(Sb) from aqueous solutions using iron-oxide coated sand(IOCS) was investigated by batch experiments under different conditions in terms of inorganic anion species and ionic strength,pH,dosage and temperature.The experimental results shown that the three tested inorganic anions(NO~-_(3),Cl~(-),SO~(2-)_(4)) have little effect on the Sb removal efficiency,adsorption capacity,and adsorption rate.The removal percentages of Sb by IOCS can be achieved about 90% when pH ranged from 3 to 9.The adsorption data (obtained) from kinetic and isotherm experiments could be well described using second order rate model and Langmuir adsorption isotherm model,respectively.The adsorption rate and capacity increased as temperature increased. |
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| Keywords: | coated iron-oxide antimony adsorption. |
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