Description and implementation of acid/base titrimetric techniques for process monitoring

The basis of titrimetric techniques is that the proton production (or consumption) rate can be indirectly measured with the amount of base (or acid) dosage necessary to maintain the pH at a certain setpoint value. Titrimetric measurements are very useful for the monitoring of any process that influences pH with simple equipment (an accurate pH control loop). This work describes the theoretical basis of titrimetric measurements and shows three examples of the application of titrimetric techniques for the process monitoring: CO 2 absortion, nitrification and biological organic matter removal.