There are disclosed various processes, apparatuses and systems for treating
a halogen-containing gas such as F2 that involve generating a plasma
in order to reduce chemically the halogen-containing gas into products that are
more environmentally manageable. According to a particular embodiment, a reducing
agent is mixed with the halogen-containing gas to produce a feed gas mixture and
a non-thermal plasma is generated in the feed gas mixture in the presence of liquid water.