A process for removal of heavy metals and/or dioxins from a fluid including heavy metals, where the fluid is brought in contact with a mixture including between 30% vol. and 60% vol. of an activated carbon catalyst impregnated with sulfur, between 30% vol. and 60% vol. of an activated carbon catalyst impregnated with iron and between 5% vol. and 40% vol. of a filler material, the total of these three ingredients being 100% vol, where the fluid is left in contact with the mixture, the heavy metals and/or dioxins are absorbed onto the mixture to obtain a fluid with a depleted level of heavy metals, which fluid is then evacuated from the mixture.

A process where a gas, containing SO.sub.2 and O.sub.2 is brought in contact with a mixture of from 95% vol. to 50% vol. of activated carbon catalyst and from 5% vol. to 50% vol. of an inert filler material, where the SO.sub.2 is converted to H.sub.2SO.sub.4 on the activated carbon catalyst and is then washed from the activated carbon catalyst to obtain a H.sub.2SO.sub.4 solution.

An indoor unit for an air conditioner including: a cabinet assembly forming an external appearance of the indoor unit and having a suction port formed in a rear surface of the cabinet; a filter module movably disposed in rear of the cabinet assembly; a filter module mounted to the filter mounting member and filtering foreign substances in air flowing into the suction port; a mobile member connected to the filter mounting member and moving a position of the filter mounting member; a driving device pressing the mobile member to change the position of the filter mounting member; and a controller configured to, in response to receiving a control command to change the position of the filter mounting member, operate the driving device that presses the mobile member.

The invention discloses a composite material used for catalyzing and degrading nitrogen oxide and its preparation method and application thereof. The invention of the hollow g-C.sub.3N.sub.4 nanospheres/reduced graphene oxide composite-polymer carbonized nanofiber material is prepared as follow: 1) the preparation of silica nanospheres; 2) the preparation of hollow g-C.sub.3N.sub.4 nanospheres; 3) the preparation of graphene oxide; 4) the preparation of surface modified hollow g-C.sub.3N.sub.4 nanoparticles preparation; 5) the preparation of composites; 6) the preparation of composite-polymer carbon nanofiber material. The raw materials used in the process is low cost and easy to get; the operation of the invention is simple and convenient without the use of expensive equipment in the whole process; the composite has high adsorption efficiency of ppb level nitrogen oxide with good repeatability.

Catalyst regeneration processes that include measures for controlling emissions generated during the regeneration are described. The present invention further relates to catalytic processes for producing various chlorinated aromatic compounds that include provisions for controlling emissions during catalyst regeneration.

The present disclosure relates to a UV- and visible-light photocatalytic titanium dioxide composite material. In particular, the disclosure relates to a 5 photocatalytic titanium oxide composite material for the decomposition of airborne pollutants.

A photocatalyst composition and an air filtration structure with the photocatalyst composition are provided. The air filtration structure is characteristic of the photocatalyst composition uniformly distributed on a substrate and comprises graphene as carriers, titanium dioxide with a nano-level particle sizes for structural modification, and refractive and reflective photoconductive materials by which titanium dioxide is irradiated by more ultraviolet or blue light to improve the air purification ability of the photocatalyst composition.

A hydrocarbon burner for an enclosed environment includes a heat exchanger having a first heat exchanger inlet connected to an inlet of the hydrocarbon burner and a first heat exchanger outlet connected to a heater, and a second heat exchanger inlet connected to a reactor outlet and a second heat exchanger outlet connected to an outlet of the hydrocarbon burner. A reactor includes a reactor inlet, the reactor outlet, and a catalyst mixture disposed in a reactor bed between the reactor inlet and the reactor outlet. The heater connects the first heat exchanger outlet to the reactor inlet. The reactor is a low temperature reactor configured to convert at least one hydrocarbon to at least one of H2O and CO2.

The present disclosure provides for ambient temperature catalyst compositions for trace contaminant control (e.g., for environmental control assemblies for space systems) and related methods of fabrication and use. More particularly, the present disclosure provides for ambient temperature catalytic oxidation (ATCO) catalyst compositions for trace contaminant control with improvements to carbon monoxide and hydrogen capture, and related methods of fabrication and use.

A bipolar membrane comprising a cation exchange mat of one or more cation exchange polymers, an anion exchange mat of one or more anion exchange polymers, and an internal 3D bipolar interface, disposed between the cation and anion exchange layers, including a mixture of at least one cation exchange polymer and at least one anion exchange polymer, such that an interface of the at least one cation exchange polymer and the at least one anion exchange polymer is the internal 3D bipolar interface that has a large area, and the at least one cation exchange polymer in the 3D bipolar interface is connected to the one or more cation exchange polymers of the cation exchange layer, and the at least one anion exchange polymer in the 3D bipolar interface is connected to the one or more anion exchange polymers of the anion exchange layer.