| 聚合氯化铝中纳米Al13电荷特性及其混凝效果 |
| 摘要点击 1152 全文点击 1212 投稿时间：2004-12-09 修订日期：2005-03-30 |
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| 中文关键词 Al13形态 分离纯化 聚合氯化铝(PAC) 柱层析 |
| 英文关键词 Al13 species separation and purification polyaluminum chloride(PAC) column chromatography |
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| 中文摘要 |
| 采用聚丙烯酰胺凝胶柱层析法分离纯化聚合氯化铝(PAC)中的Al13形态,并采用Al-Ferron逐时络合比色法和ZATESIZER 3000HSA测定仪对分离所得纳米Al13形态以及AlCl3和PAC进行了分析表征和电荷特性的对比性研究;采用烧杯实验法对3个样品处理实际和模拟水样的混凝效果进行了对比性研究.Al-Ferron逐时络合比色法的结果表明,采用层析法分离可得到含量99%左右的纳米Al13形态;电荷特性和混凝效果研究结果表明纳米Al13形态较其它两者具有更好的除浊、除腐殖酸和脱色效果并且具有更强的电中和能力,因此Al13形态是一种具有较高正电荷和较高的水解稳定性,在给水和废水处理中的一种较为有效的Al形态. |
| 英文摘要 |
| The polynuclear Keggin species,Al12AlO4(OH)24(H2O)7+12(Al13),was separated and purified from polyaluminum chloride(PAC) by gel column chromatographic method.The purified Al13 was characterized by Al-Ferron timed complexation spectrophotometry method and ZATESIZER 3000HSA tester compared with PAC and AlCl3.Jar tests were performed to test the coagulation efficiency of the three coagulants in treating synthetic or actual water samples.The results showed that Al13 could be obtained by the column chromatographic method and the content of it could reach about 99%.Compared with PAC and AlCl3,Al13 gives the best results for turbidity,humic acid and color removal,and achieves the highest chargeneutralizing ability.Al13 species is a higher positive-charged and wide pH range application,it is much more steady in hydrolyze process and most effective polymeric Al species in water and wastewater treatment. |
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