| 羟基铝蒙脱石去除染料弱酸性深蓝GR的研究 |
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| 引用本文： | 曾秀琼,郭建军,刘维屏.羟基铝蒙脱石去除染料弱酸性深蓝GR的研究[J].环境科学,2001,22(5):65-69. |
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| 作者姓名： | 曾秀琼 郭建军 刘维屏 |
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| 作者单位： | 浙江大学玉泉校区环境科学研究所,杭州,310027 |
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| 基金项目： | 国家自然科学基金资助项目(39670420) |
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| 摘 要： | 在OH-]/A13+]=2.4的反应条件下,利用A13+与碱液反应制备出Keggin离子,并由此制备出羟基铝蒙脱石.XRD-衍射数据表明:羟基铝蒙脱石的层间距由原来的12.58A(d001)增加到18.63A.研究了染料弱酸性深蓝GR在7种改性蒙脱石上的吸附.结果表明:酸性条件下,羟基铝蒙脱石处理有机污染物的去除率高,用0.0200g处理25ml弱酸性深蓝GR溶液,去除率可高达95%以上.由等温吸附线可知:弱酸性深蓝GR在不同改性蒙脱石上的吸附机理主要为表面吸附、离子交换和分配作用.
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| 关 键 词： | 羟基铝蒙脱石 吸附 染料 弱酸性深蓝GR |
| 文章编号： | 0250-3301(2001)05-05-0065 |
| 收稿时间： | 2000/10/10 0:00:00 |
| 修稿时间： | 2000年10月10 |
Adsorption of Weak Deep Blue GR on Hydroxy-Alumium Montmorillonite |
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| Zeng Xiuqiong,Guo Jianjun and Liu Weiping.Adsorption of Weak Deep Blue GR on Hydroxy-Alumium Montmorillonite[J].Chinese Journal of Environmental Science,2001,22(5):65-69. |
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| Authors: | Zeng Xiuqiong Guo Jianjun and Liu Weiping |
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| Institution: | Institute of Environmental Science, Zhejiang University at Yuquan Campus, Hangzhou 310027, China. |
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| Abstract: | Hydroxy-alumium montmorillonite may serve as potential adsorbents for organic pollutants from wastewater. It was synthesized by titrating Na montmorillonite with hydroxy aluminum solution (OH-/Al3+ molar ratio was 2.4). From powder XRD data, it was shown that the interlayer(d001) of montmorillonite was increased greatly from 12.58A to 18.63A. Seven modified montmorillonite samples, including hydroxy alumium montmorillonite, were used to remove the dye of weak deep blue GR from water. The results showed that hydroxy alumium montmorillonite had very high adsorption ability, only 0.0200g could treat 25ml weak deep GR with 95% removal. The different adsorption mechanisms of weak deep blue GR on modified montmorillonite: surface adsorption, ion exchanging and partion, were suggested. |
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| Keywords: | hydroxy-alumium montmorillonite adsorption dye weak deep blue GR |
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