Chu Yong-bao, Gao Bao-yu, Yue Qin-yan, Wang Yan, Wang Shu-guang
School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
Huan Jing Ke Xue. 2005 Nov;26(6):119-22.
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.
通过凝胶柱色谱法从聚合氯化铝（PAC）中分离并纯化了多核Keggin物种Al12AlO4(OH)24(H2O)12(7+)（Al13）。采用Al-Ferron定时络合分光光度法和ZATESIZER 3000HSA测试仪对纯化后的Al13进行表征，并与PAC和AlCl3进行比较。进行了烧杯试验，以测试这三种混凝剂对合成水样或实际水样的混凝效果。结果表明，通过柱色谱法可获得Al13，其含量可达约99%。与PAC和AlCl3相比，Al13在去除浊度、腐殖酸和颜色方面效果最佳，且具有最高的电荷中和能力。Al13物种带正电荷较高，适用pH范围宽，在水解过程中更稳定，是水和废水处理中最有效的聚合铝物种。
