Automatic dosage of hydrogen peroxide in solar photo-Fenton plants: Development of a control strategy for efficiency enhancement

► Dissolved oxygen monitoring is used for automatic dosage of H2O2 in photo-Fenton. ► PI with anti-windup minimises H2O2 consumption. ► The H2O2 consumption was reduced up to 50% with respect to manual addition strategies. ► Appropriate H2O2 dosage is achieved by PI with anti-windup under disturbances.