| 低聚合羟基铁-蒙脱石复合体吸附铬酸根的实验研究 |
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| 引用本文： | 王雪莲,廖立兵,何海燕,姜浩. 低聚合羟基铁-蒙脱石复合体吸附铬酸根的实验研究[J]. 矿物岩石地球化学通报, 2004, 23(2): 118-123 |
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| 作者姓名： | 王雪莲 廖立兵 何海燕 姜浩 |
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| 作者单位： | 中国地质大学,材料科学与工程学院,北京,100083;中国地质大学,材料科学与工程学院,北京,100083;中国地质大学,材料科学与工程学院,北京,100083;中国地质大学,材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(49973028) |
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| 摘 要： | 摘要：在模拟的酸性土壤条件下，利用制备的低聚合羟基铁蒙脱石复合体对铬酸根进行吸附实验。重点研究了吸附条件对复合体铬吸附能力的影响，对比了蒙脱石和含水氧化铁。结果表明，实验条件下复合体有较强的铬吸附能力，其铬吸附量低于铁沉积物而明显高于蒙脱石。铬初始质量浓度是影响复合体铬吸附量的最主要因素，离子强度次之。吸附时间(12h以上)、温度、pH值对复合体铬吸附量的影响很小；说明在酸性土壤条件下，复合体有强且稳定的铬吸附能力。
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| 关 键 词： | 羟基铁离子 蒙脱石 复合体 铬酸根:吸附 |
| 文章编号： | 1007-2802(2004)02-0118-06 |
| 修稿时间： | 2003-09-28 |
Experimental study on adsorption of chromate on hydroxy-Fe-montmorillonite complex |
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| WANG Xue-lian,LIAO Li-bing,HE Hai-yan,JIANG Hao School of Material Sciences and Technology,China University of Geosciences,Beijing ,China. Experimental study on adsorption of chromate on hydroxy-Fe-montmorillonite complex[J]. Bulletin of Mineralogy Petrology and Geochemistry, 2004, 23(2): 118-123 |
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| Authors: | WANG Xue-lian LIAO Li-bing HE Hai-yan JIANG Hao School of Material Sciences Technology China University of Geosciences Beijing China |
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| Affiliation: | WANG Xue-lian,LIAO Li-bing,HE Hai-yan,JIANG Hao School of Material Sciences and Technology,China University of Geosciences,Beijing 100083,China |
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| Abstract: | Adsorption experiment of chromate has been conducted on the surface of hydroxy-Fe-montmorillonite complex under simulated acidic soil conditions. The effects of the initial concentration of chromate, ionic strength, pH, temperature and adsorption duration on the adsorption of Cr on hydroxy-Fe-montmorillonite complex have been investigated in detail. Results show that hydroxy-Fe-montmorillonite complex has strong affinity for Cr under experimental conditions.The uptake of Cr on hydroxy-Fe-montmorillonite complex is influenced by, in a decreasing order of,the initial concentration of Cr>ionic strength>temperature>adsorption duration>pH. |
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| Keywords: | hydroxy-Fe-montmorillonite complex chromate adsorption |
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