P-42
A novel on-line measuring method for determination of hydrogen
peroxide in CIP solutions.
Caustic solutions with a certain amount of hydrogen peroxide are used to clean vessels, pipes etc. in breweries. The methods used up to now for determining the hydrogen peroxide content in such solutions are not adequate for a real time process control. However it would be of great interest to be able to track the hydrogen peroxide concentration for optimizing the cleaning process. An alternative to classical titrimetric, chromatographic and electrochemical methods could be NIR-spectrometry. NIR is very suitable for process control purposes because it can easily be implemented into a process without any need of sample conditioning or adding of reagents so that the cost of ownership are low. The results of calibration experiments in different regions of the NIR with caustic solutions containing hydrogen peroxide in the concentration range of interest up to 7000 ppm are discussed. The measurements were done at different temperatures (e.q. 30 C, 40 C and 80 C).
Dr. Frank Nitzsche did an education to become a brewer and malster at Veltins Brauerei, Germany between 1981 - 1983. He received a master degree in brewing science at TU Muenchen Weihenstephan in 1988. His PhD work was done with Prof. Dr. Narziss until 1991. Since then he is working for Koenig Brauerei as Head R&D department at Koenig Brauerei until 1994, as Head QA until 1997 and nowadays he is responsible for Production and QA.