In this study, the degradation of gasoline components, such as
BTEX, MTBE, TBA, and TPHg in groundwater samples by an
ozone/UV process was investigated. The ozone/UV process was
very effective compared to ozonation in the removal of gasoline
components from the groundwater samples. In the ozone/UV process
the presence of iron reduced the removal rate of the gasoline
components. It was observed that the sample became turbid as
experiment progressed, likely due to the reaction of iron with
ozone that might have resulted in reduction of UV light absorbed
by the solution. On the other hand, it was observed that the presence
of sufficient amount of iron in the groundwater sample could
improve the removal of BTEX, MTBE, TBA, and TPHg in ozonation
experiments. Moreover, it was also observed that complete mineralization
of the gasoline components could be achieved in the
ozone/UV process, if desired.