An apparatus for attachment to a tailpipe of a vehicle is disclosed herein. The apparatus includes a filter body, a honeycomb monolith, a locking collar and a removable front cover. The honeycomb monolith is composed of an adsorbent material or an absorbent material. Exhaust from the tailpipe of the vehicle is absorbed by the honeycomb monolith structure.

Embodiments of the present disclosure are directed to systems and methods for removing formaldehyde from indoor air. Some embodiments include flowing an indoor airflow over and/or through a solid supported amine filtering medium, such that, at least a portion of formaldehyde entrained in the indoor airflow is removed therefrom. Some other embodiments include systems having one or more fans for providing velocity to one and/or another airflows (e.g., airflows to/from a formaldehyde filter).

An air pollution prevention device applied for a baby carriage includes a sealing cover, a filtration cleaner, a gas detection module and an intelligent control and process device. The sealing cover is hooded on the baby carriage for forming a sealed space. The filtration cleaner penetrates the sealing cover form the outside of the baby carriage for introducing an outside air into the sealed space of the baby carriage and discharging an air pollution source out of the sealed space. The gas detection module detects the air pollution source and outputs gas detection data. The intelligent control and process device receives and compares the gas detection data and controls an enablement of a gas guider of the filtration cleaner for filtering and exchanging the air pollution source in the sealed space so as to generate a clean air.

A plant includes delivery piping (50) transporting aeriform effluent from a production station (200) to a first purification apparatus (10) that comprises at least one static type adsorber device (2) within which at least one filter element (3) is arranged to carry out an initial aeriform effluent adsorption operation, and an emission device (6) of a high temperature fluid that performs a regeneration of the filter element (3) and recovers contaminant adsorbed by the filter element (3). A second purification apparatus (20) is placed along the delivery piping (50), downstream of the first purification apparatus (10), and includes a roto-concentrator (30) that performs at least one second aeriform effluent adsorption operation and at least one desorption operation of contaminants accumulated on the roto-concentrator (30). Lastly, a return pipeline (60) connects the roto-concentrator (30) to an inlet portion (14) of the delivery piping (50).

An assembly for a vapor provision device includes a vapor generator for vaporizing source liquid, a liquid conduit for delivering source liquid from a reservoir to the vapor generator, and a liquid capture element in liquid transfer contact with at least a portion of the liquid conduit between the vapor generator and a part of the liquid conduit that receives liquid from the reservoir, and including an absorbent structure providing a lower capillary force than a capillary force of the liquid conduit.

A system for capturing atmospheric carbon dioxide is disclosed, including a track and a plurality of panels moveably coupled to the track, each panel having a sorbent material. The system also includes a harvest house having a sorbent regeneration system and at least one aperture, and a propulsion system coupled to the track and configured to move each panel in a circuit having a collection phase and a release phase. For each panel, the collection phase of the circuit includes the panel moving along the track to expose the sorbent material to an airflow and allow the sorbent material to capture carbon dioxide. For each panel, the release phase of the circuit includes the panel being sufficiently enclosed inside the harvest house that the sorbent regeneration system may operate on the sorbent material to release captured carbon dioxide from the sorbent material and form an enriched gas.

Deleterious gas is captured from atmospheric air using capture units dispersed across a geographic region. Each unit has a filter that is capable of capturing compounds from the gas from air when air is passed through the filter by fans. The units additionally include a sensor for sensing a level of the gas in the air. An electronic processor controls the fan, and communicates data from the sensor to other units and/or a central electronic processor. The electronic processors of the units or the central processor controls the fan speed of units in areas of higher concentration of the gas, selecting which units to become active based upon a proximity of each unit to the gas concentration, as well as a direction of movement of the concentration. A communicated presence of errors or a low battery state of a unit, is used by the processor to select other units nearby for operation instead of the affected unit.

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers.

Filter element (1) for filtering a substance, in particular a hydrocarbon, out of a fluid flow, in particular out of a fuel container, with a substrate material (2) on which a sorbing, in particular adsorbing, surface is formed on at least one side, at least in part, wherein the filter element (1) includes multiple mutually-opposite layers of the substrate material (2), wherein the individual layers are arranged so as to be mutually spaced, and wherein the filter element (1) includes at least one spacer (6) that is provided between two layers in each case.

Described are methods, devices, and systems useful for removing gaseous ammonia from a gas mixture at a pressure in an ambient pressure range by allowing the ammonia to adsorb onto a solid adsorbent, as well as related systems and methods.