A series of poly-aluminum-chloride-sulfate (PACS), which has different basicities (gamma) and Al3+/SO42- molar ratio, has been prepared and dried at 105degreesC and 65degreesC, respectively. The distribution of alumin...A series of poly-aluminum-chloride-sulfate (PACS), which has different basicities (gamma) and Al3+/SO42- molar ratio, has been prepared and dried at 105degreesC and 65degreesC, respectively. The distribution of aluminum species of PACS was examined, and the effect of 7 value, Al3+/SO42- molar ratio, dilution on the distribution of aluminum species of PACS was also investigated by using Al-ferron timed complex colorimetric method. The IR spectroscopy and X-ray diffraction were used to study the effect of gamma value, 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 gamma value and Al3+/SO(4)(2-)molar ratio. Drying temperature has an influence on the structure and the solubility of solid PACS products.展开更多
文摘A series of poly-aluminum-chloride-sulfate (PACS), which has different basicities (gamma) and Al3+/SO42- molar ratio, has been prepared and dried at 105degreesC and 65degreesC, respectively. The distribution of aluminum species of PACS was examined, and the effect of 7 value, Al3+/SO42- molar ratio, dilution on the distribution of aluminum species of PACS was also investigated by using Al-ferron timed complex colorimetric method. The IR spectroscopy and X-ray diffraction were used to study the effect of gamma value, 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 gamma value and Al3+/SO(4)(2-)molar ratio. Drying temperature has an influence on the structure and the solubility of solid PACS products.
