Abstract
Abstract A laboratory-scale ozonation reactor was operated with a fibre-optics-based LIF sensor. In-situ multi-channel fluorescence measurements were performed to monitor the decrease of the PDA fluorescence signal during ozonation in water under realistic conditions of natural water processing. The PDA concentrations were obtained from the calibrated fluorescence signals. With a generated ozone concentration of 1 g/m3 and a flow rate of 24 l/h the degradation of PDA during ozonation followed first-order kinetics and the reaction rate constant was determined to be (4.0 ± 0.5)·10−3 s−1, corresponding to a half-life of (170 ± 20) s. In addition, measurements were performed with the same ozone feed in the presence of a commercial humic acid and soil which led to significantly increased half-lives.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
