Abstract: A system for treating contaminated media is provided. In the process, contaminants are removed from the media using a photocatalytic process operating in an aqueous phase.

Abstract: A system for treating contaminated media is provided. In the process, contaminants are removed from the media using a photocatalytic process operating in an aqueous phase.

Abstract: A system for treating contaminated media is provided. In the process, contaminants are removed from the media using a photocatalytic process operating in an aqueous phase.

Abstract: A plug for an enclosure for holding a radiation source is provided. The plug is formed from a material that emits visible light when the radiation source is energized, such that the status of the radiation source may be determined by an operator without the need for status monitoring equipment. The plug seals the radiation source from the environment to prevent ozone formation and to prevent leakage into or out of the enclosure.

Abstract: A system for treating contaminated media is provided. In the process, contaminants are removed from the media using a photocatalytic process operating in an aqueous phase.

Abstract: A method and system for fluid purification is disclosed herein. In accordance with the present invention, an improved technique for recovering a decontaminated effluent after photocatalytic decontamination of a contaminated fluid is achieved. A slurry is formed by mixing a contaminated fluid with photocatalytic particles having an agglomeration property, and the photocatalytic particles are excited to render a treated slurry that includes a decontaminated fluid and the photocatalytic particles. The treated slurry is directed into a filter unit that includes at least one separation element. Each separation element has an inner surface defined by a channel extending through a substrate, and a plurality of pores which derive from the inner surface and extend through the substrate. The treated slurry is passed through the separation element and the agglomerated photocatalytic particles are allowed to form a layer at or near the inner surface of the separation element.

Abstract: The present invention relates to a method for the purification of contaminated fluids by photocatalytic treatment. In accordance with the invention, an oxidation state where contaminant molecules are oxidized and/or a reduction state where contaminant molecules are reduced are employed to purify a contaminated fluid. The reduction state, where certain contaminant molecules are reduced, is induced by providing a reactant, such as citric acid, in the presence of an excited photocatalyst. A reduction state may alternate to an oxidation state, where contaminant molecules are oxidized, by the addition of an oxidizing agent, such as oxygen.

Abstract: A method and system for purifying a contaminated fluid in a continuous manner is herein disclosed. The present invention provides for the irradiation of a slurry between a defined surface(s) such that substantially all of the contaminants are removed from the slurry, and a turbulent flow of the slurry is achieved. The present invention further provides for the separation of decontaminated effluent from the slurry by employing ceramic membrane filters. Air is applied to the ceramic membrane filters at relatively high pressures in order to remove any photoreactive catalyst particles that have collected in the ceramic membranes.