PACS中铝的形态分布及其经验公式

Study on the Aluminum Species in PACS and its Empirical Formula

利用ＡｌＣｌ３·６Ｈ２Ｏ，Ｎａ２ＳＯ４和ＮａＯＨ为原料制备了一系列具有不同Ａｌ３＋／ＳＯ２－４摩尔比及碱化度的ＰＡＣＳ样品，利用Ａｌ－Ｆｅｒｒｏｎ逐时络合比色法就Ａｌ３＋／ＳＯ２－４摩尔比及碱化度对ＰＡＣＳ中铝的形态分布影响进行了实验研究，得到了一系列实验结果，建立了ＰＡＣＳ中铝的水解形态分布与Ａｌ３＋／ＳＯ２－４摩尔比和碱化度之间的数学模型，数据拟合结果与实验结果比较，证明二者基本吻合。

A series of polyaluminum chloride sulfate ion (PACS), which have different basicities and Al 3+ /SO 2- 4 molar ratio, were prepared by using AlCl 3·6H 2O, Na 2SO 4 and NaOH as raw materials. The effects of Al 3+ /SO 2- 4 molar ratio and basicities on the aluminum species of PACS were investigated by using Al-Ferron timed complex colorimetric method. A series of experimental results were achieved. Nonlinear formulae modelling the aluminum species of PACS, Al 3+ /SO 2- 4 molar ratio and basicities were presented.