The present invention relates to a reusable food storage container designed to store food items while preventing the odor of stored food from being retained in the container material. The container has a base comprised of odor-resistant material, such as stainless steel or glass, and has a lid with an embedded replaceable charcoal filter. The charcoal filter is configured to absorb odor emanating from stored food items. The container can comprise different sizes, designs, shapes, and colors and can be washed and reused. In one embodiment, a lid of the container has a cavity for embedding the charcoal filter, and in another embodiment, the bottom surface of the lid has a frame with a continuous channel for accommodating the charcoal filter. The lid is configured to seal the stored food material using a skirt wall for preserving the food items.

A method for improving indoor air quality in a room, comprising drawing air from the room and guiding the air into a gas/liquid contactor charged with aqueous alkali hydroxide/H.sub.2O.sub.2 solution, passing the air through a perforated membrane installed in the gas/liquid contactor below the surface level of the aqueous alkali hydroxide/H.sub.2O.sub.2 solution, such that bubbles produced travel through said solution, and getting treated air with improved quality from said gas/liquid contactor, said treated air is characterized by having: reduced carbon dioxide levels; and/or reduced VOC levels; and/or reduced microbiological load. An air purifier to carry out the method is also provided.

Proposed is a multi-layer filtration system including a metal catalyst filter unit, a carbon filter unit, and an inorganic compound filter unit. The metal catalyst filter unit includes at least one among metals including Ni, Co, Fe, Cu, Cr, Mg, Zn, Ba, Au, Ag, Pd, Pt, Ru, Mn, and Ti, oxides thereof, and mixtures thereof. The carbon filter unit includes at least one of activated carbon or activated carbon fiber. The inorganic compound filter unit includes an inorganic compound capable of adsorbing toxic gas. The multi-layer filtration system has good removal effect for toxic gas. A filter module including the multi-layer filtration system and a gas mask including the multi-layer filtration system are also proposed.

Embodiments of the present disclosure include methods and systems of circulating air in an enclosed environment. In such embodiments, the system may comprise an air handling unit (AHU), the AHU including an indoor air inlet to receive an indoor airflow from the enclosed environment and an indoor air outlet to expel the indoor airflow, a conditioning element arranged between the inlet and the outlet configured to at least heat or cool the indoor airflow as it flows thereover, one or more fan units arranged between the inlet and the outlet configured to provide velocity to the indoor airflow, and an air treatment assembly (ATA) arranged within or proximate the AHU, the ATA including an air inlet configured to receive a portion of the indoor airflow received by the AHU indoor air inlet.

A nickel-based MOF film photocatalyst grown in-situ on a foamed nickel surface, a preparation method therefor, and an application thereof. The nickel-based MOF film photocatalyst grown in-situ on a foamed nickel surface is prepared by first immersing foamed nickel in a diluted acid and performing ultrasonic processing, then cleaning the foamed nickel with deionized water, and drying the foamed nickel to obtain surface-activated foamed nickel; immersing the surface-activated nickel foam in a mixture of an imidazole compound, sodium formate, and a solvent and reacting at 100° C. to 180° C. to obtain an unactivated nickel-based MOFs film on the surface of the foamed nickel, and after cooling to room temperature, removing same and soaking in an organic solvent to activate, and then drying the obtained product. The film photocatalyst synthesized in-situ on the foamed nickel can increase the specific surface area of the material to facilitate the adsorption and diffusion of VOCs, and can expose more catalytic sites, so that the VOCs can be effectively degraded under the action of sunlight.

A heater element with a functional material-containing layer includes: a honeycomb structure including an outer peripheral wall and partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells extending from a first end face to a second end face to form a flow path, at least the partition walls being made of a material having a PTC property; a pair of electrodes provided on the first end face and the second end face of the honeycomb structure; and a functional material-containing layer provided on a surface of the partition walls.

Embodiments disclosed herein provide an organic matter processing apparatus and method for the use thereof to convert organic matter into a ground and desiccated product. The organic matter processing apparatus includes a lid assembly that is positioned at the top or head of the processing apparatus and an air treatment system. The lid assembly is operative to open to allow a user to deposit organic matter into the processing apparatus or to remove a removable bucket contained therein. The lid assembly is operative to close and provide an odor containing seal that prevents or substantially mitigates escape of odor. The air treatment system uniformly distributes untreated air through an air treatment chamber to convert the untreated air to treated air, which is exhausted out of the processing apparatus.

A device for gas purification treatment may include: a light oxidation reactor, a light source being disposed in the light oxidation reactor, the light source being configured to emit first light and second light, the light oxidation reactor being configured to perform a first-stage purification treatment on a gas under irradiation of the first light; a catalytic ozone oxidation reactor configured for second-stage purification treatment of the gas; a photocatalytic reactor configured to perform a third-stage purification treatment on the gas under irradiation of the second light; wherein, the photocatalytic reactor is adjacent to the light oxide reactor, and the photocatalytic reactor and the light oxide reactor are separated by a light transmittance component, so that the second light passes through the light transmittance component into the photocatalytic reactor.

This application provides an air purifier, which includes a casing, a fan, a filter, and a purification module. The filter is in a cylindrical shape. The purification module includes an inner filter for purification of harmful gases in air. The inner filter includes an inner filter cylinder and a purification plate, the purification plate and/or the inner filter cylinder are honeycomb-like or reticulate, and the inner filter cylinder is disposed in the filter. In the present application, the air purifier is provided with an inner filter to remove harmful gases such as formaldehyde in the air, and the purification plate and/or inner filter cylinder are honeycomb-like or reticulate to reduce wind resistance of the inner filter and reduce air resistance, thereby reducing the fan speed and noise.

The present invention relates to a method for the treatment of an exhaust gas comprising carbon monoxide (CO) and/or one or more volatile organic compounds (VOCs) using a PGM-free catalyst article comprising a mixed oxide of Mn, Cu, Mg, Al and La. The present invention also relates to an HVAC system comprising a PGM-free catalyst article.