SELF-TUNING PID (STPID) CONTROL OF PH IN RECOVERING PROCESS OF MAGNESIUM HYDROXIDE (MG(OH)2) BY COAGULATION FROM SALT

Abstract

The salt obtained from the salt sources are not desirable purity level and contains some impurities. In the scope of this study, coagulation of magnesium hydroxide (Mg(OH)2) in pH control has been carried out by adding sodium hydroxide (NaOH) to magnesium chloride (MgCl2) and by this way recovery process has been achieved by Self Tuning PID Control. To provide the best coagulation pH 11 has been obtained as optimum pH value in consideration of the performed calculations.