Ionic type of polyacrylamide anionic
, cationic and nonionic, respectively, their appearance shape are white powder or granule, to judge from appearance is not, then we can through what method to distinguish?
Resolution method of polyacrylamide ion type:
1. Determine the pH value of the test.
By testing the pH value of polyacrylamide solution, the method can be used to identify the properties of polyacrylamide in different types of polyacrylamide.
However, due to the different manufacturers of the production process, there will be a slight deviation, which can be determined by the production process to determine the pH value.
2. Mix and add methods.
Often contact polyacrylamide is probably clear, anion and cation ionic type you can't mix, mix add can react effect, the method may be used for judgment, can let the factory to make clear some test results.
3. Judge by the sewage test.
The classification of polyacrylamide can be determined by the adaptability of different polyacrylamide in sewage.
Generally, anionic polyacrylamide
is used for high concentration, positive suspended suspended matter, and PH value is neutral or alkaline.
Cationic polyacrylamide is used for suspended solids with negative charges.
Non-ionic polyacrylamide is suitable for suspension of organic, inorganic mixed state, and PH is neutral or acidic.