Gas-solid photocatalytic oxidation of environmental pollutants

A photocatalytic reactor comprising a body portion surrounding a chamber portion and having a window defined therein for passing visible light having a wave length not greater than approximately 600 nm from outside said body portion into said chamber;

• a catalyst bed disposed within said chamber portion and positioned to receive hereupon said light from said window and become activated in response thereto;
• ingress means for introducing a contaminated gaseous stream into said chamber portion for exposure to a said activated catalytic bed;
• first egress means for withdrawing contaminants from said chamber portion;
• and second egress means for withdrawing the contaminant-free gaseous stream from said chamber portion.

A photoreactor comprising a body portion surrounding a chamber portion and having a window defined therein for passing visible light from outside said body portion into said chamber;

• a catalyst bed disposed within said chamber portion and positioned to receive hereupon said light from said window and become activated in response thereto;
• ingress means for introducing a contaminated gaseous stream into said chamber portion for exposure to a said activated catalytic bed;
• first egress means for withdrawing contaminants from said chamber portion;
• second egress means for withdrawing the contaminant-free gaseous stream from said chamber portion, said photoreactor being adapted to be connected in series with a conventional water treatment system and receive and detoxify the effluent therefrom.

A photocatalytic reactor comprising a body portion surrounding a chamber portion and having a window defined therein passing visible light having a wave length of at least 320 but not more than 440 nanometers from outside said body portion into said chamber;

• a catalyst bed disposed within said chamber portion and positioned to receive hereupon said light from said window and become activated in response thereto;
• ingress means for introducing a contaminated gaseous stream into said chamber portion for exposure to said activated catalytic bed;
• first egress means for withdrawing contaminants from said chamber portion;
• second egress means for withdrawing the contaminant-free gaseous stream from said chamber portion, said photoreactor being adapted to be connected in series with a conventional water treatment system and received and detoxify the effluent therefrom.