| 羟基铝蒙脱石去除染料弱酸性深蓝GR的研究 |
| 摘要点击 1570 全文点击 2050 投稿时间：2000-10-10 |
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| 中文关键词 羟基铝蒙脱石 吸附 染料 弱酸性深蓝GR |
| 英文关键词 hydroxy-alumium montmorillonite adsorption dye weak deep blue GR |
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| 中文摘要 |
| 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. |
| 英文摘要 |
| 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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