Photoreactor for photocatalysis, related systems, and related methods

A photocatalytic photoreactor comprising:

• a first wall having an outer surface and an opposing inner surface, the inner surface defining an interior volume;
• a second wall having an outer surface and an opposing inner surface, the second wall being spaced apart from the first wall such that the first wall and the second wall together define a reaction volume between the first wall outer surface and the second wall inner surface, wherein:
• the second wall is at least partially transparent, and
• the reaction volume is sized and shaped to receive a particulate photocatalyst therein such that incident light passing through the second wall from the second wall outer surface, to the second wall inner surface, and into the reaction volume penetrates a substantial portion of the reaction volume when a particulate photocatalyst is contained therein;
• and
• an external light transmission apparatus, wherein:
• the light transmission apparatus is positioned external to and at least partially around the second wall outer surface, and
• the light transmission apparatus is adapted to transmit light through the second wall from the second wall outer surface, to the second wall inner surface, and into the reaction volume.