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.
The polynuclear Keggin species, Al12AlO4 （OH）24 （H2O）12^7＋ （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 charge-neutralizing 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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2005年第6期119-122,共4页
Environmental Science
基金
国家高技术研究发展计划(863)项目(2002AA601290-5)
高等学校博士点专项科研基金项目(20020422001)
山东省自然科学基金项目(Y2002B03)
关键词
AL13形态
分离纯化
聚合氯化铝(PAC)
柱层析
Al13 species
separation and purification
polyaluminum chloride（PAC）
column chromatography
