Preparation of Poly aluminum Chloride with Sulfate Ion and Study on Its Properties.
Gao Baoyu et al. (Environmental Science Center, Shandong University, Jinan
Polyaluminum chloride with sulfate ion (PACS) has been prepared by using aluminum hydroxide, hydrochloric acid, sulfuric acid and sodium carbonate as raw materials, and the properties of PACS have also been studied. The factors affecting the flocculating effect of PAC3 have been investigated. The experimental results show that the flocculating effect of PACS is influenced by the amount of sulfate ion in PACS, basicity of PACS and pH of water solution. When the molar ratio of Al3+ to SO22-is in the range of 15 to 17, the flocculating effect of PACS is best.