| 1 | The usual source of trivalent cations in water treatment is alum (aluminum sulfate). | |
| 2 | Some manufacturers used a little fumed litharge and basic lead sulfate here also. | |
| 3 | That' s because they' re made from a mineral known as potassium alum, also known as potassium aluminum sulfate. | |
| 4 | The synthesis technology of epoxy soybean oil by aluminum sulfate catalyst method was improved with the phase transfer catalyzer. | |
| 5 | The process for preparing aluminum potassium sulfate from waste fertilizer catalyst, which contains aluminum and potassium, was studied. |
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