MODELLING OF THE PRECIPITATION PROCESS OF ALUMINIUM HYDROXIDE FROM ALUMINATE SOLUTIONS BASED ON FUZZY LOGIC THEORY

The article deals with the application of fuzzy logic approach to stage precipitation aluminum hydroxide from sodium aluminate solutions obtained alkaline solution raw alunite by hydrogen peroxide as an eco-friendly reagent. Factors influencing in presence H2O2 poor include concentration peroxide, volume and other parameters. this process allows calculating probabilities that parameters can occur not only one value but a wide range well, find optimal conditions for obtaining high-yield hydroxide. Based on results experiments, it is possible precipitate yield 92% using 15.5 ml 17% at 25 °C sets suitable low, medium high levels, figure be increased or decreased changing simulation control through controller compiled membership functions Matlab.