To improve the photocatalytic effect of TiO 2 and the possibility of recycling, three different types of commercial activated carbon (AC) are used to prepare the TiO 2 /AC composite photocatalyst using the sol-gel method. The properties and catalytic activity of TiO 2 /AC composite are evaluated in comparison with bare TiO 2 , based on several characterization techniques and methylene blue (MB) photodegradation studies. The results show that the addition of AC
In
this work, a spiral microchannel reactor was used to study the
photocatalytic degradation process of oxytetracycline (OTC) in a titanium
dioxide (TiO2) slurry system. The influence of parameters
such as residence time, TiO2 dosage, OTC concentration,
light intensity, and concentration of added ions (NO3
–, SO4
2–, Ca2+, Fe3+) on OTC removal was systematically investigated,
and the degradation stability of OTC in the microreactor was evaluated.
The results show that under the best experimental conditions, the
degradation rate of OTC can reach 99.33%, the initial stage apparent
reaction rate constant is 7.7124 min–1, and the
space–time yield is 142.79 m3 pollutants/(m3 reactor day). In addition, the results prove the high efficiency
and stability of OTC degradation in the microreactor. OTC can be efficiently
degraded under high TiO2 dosage, high initial OTC concentration,
and low light intensity, which demonstrates the outstanding advantages
of spiral microchannels for OTC degradation in slurry systems. This
study has a guiding significance for the efficient photocatalytic
degradation of tetracycline antibiotics in slurry systems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.