For the investigation the
reactions, we used the electrochemical continuous (ideal
displace) reactor cell. The first example
is terbutryn degradation. The average retention
time was 9 minutes. The inlet solution was destillated water
with 20 mg/L terbutryn concentration, the flow-rate 2 ml/min. We did not use
other chemicals in this flow, the pH=6.2.
The results of
this experiment can be seen in next table. The possibile reaction scheme of
degradation of terbutryn is on the second slide. Half-time of this reaction by
photodegradation 150 is minutes (Lányi and Dinya)