Distribution of aluminum species and the characteristics of structure of poly-aluminum-chloride-sulfate (PACS)
A series of poly-aluminum-chloride-sulfate (PACS), which have different basicities (γ) and Al3+/SO42- molar ratio, have prepared and dried at 105℃ and 65℃, respectively. The distribution of aluminum species of PACS was examined, and the effect of γ value, Al3+/SO42- molar ratio, dilution on the distribution of aluminum species of PACS was also investigated by using Al-ferron timed complex calorimetric method. The IR spectroscopy and X-ray diffraction were used to study the effect of γvalue, Al3+/SO42- molar ratio and the drying temperature on the structure of PACS. The experimental results show that Al3+/SO42-molar ratio has a great effect on the distribution of aluminum species, but the dilution has a little effect on the distribution of aluminum species. The lower the Al3+/SO42- molar ratio, the higher the proportions of the polymer and colloidal species in PACS. The polymeric degree of PACS was related to value and Al3+/SO42- molar ratio. Drying temperature has an influence on the structure and thesolubility of solid PACS products.
作 者： GAO Bao-yu YUE Qin-yan YU Hui WANG Yan 作者单位： Department of Environmental Engineering, Shandong University, 刊 名： 环境科学学报(英文版) ISTIC SCI 英文刊名： JOURNAL ENVIRONMENTAL SCIENCES 年，卷(期)： 2001 13(1) 分类号： X703 关键词：