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The ozonation of caffeine in water was performed at different pH values, including acidic conditions. Kinetic experiments were conducted by adding pulses of a concentrated caffeine solution to ozone saturated water. The results showed a rapid decrease of ozone concentration during the first 15s after injection, followed by a gradual decline at a much slower rate. The data were fitted to a second order...
The photocatalytic degradation of formetanate (FMT) was studied using titania Degussa P-25 as a catalyst. The disappearance of formetanate was proved to follow a half-order kinetics. This implies that two active sites are involved in the adsorption of one molecule of formetanate (dissociative adsorption). In our conditions, complete mineralization of 20ppm of pure formetanate occurred within 125min...
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