To adsorb a substance to be treated in a fluid (7) with a higher adsorption capacity and lower pressure loss, an adsorptive sintered compact (20) includes powder adsorbent materials (1a, 1b), and resin structures (2) in which voids (3) are formed in a three-dimensional network. The powder adsorbent materials (1a, 1b) include free adsorbent materials (1a) free-movably contained in the voids (3) between the resin structures (2), and fixed adsorbent materials (1b) fixed to a surface (2a) of the resin structure (2) and/or at least partly embedded inside the resin structure (2), and the powder adsorbent materials (1a, 1b) are at least one of powdered activated carbon, powdered activated clay, and zeolite.

A lightweight portable manual water purification system that can be operated manually that employs a manual water pump system that can produce a pressure of about six atmospheres solely by using the manual rotation power of the user's hands, and a method for purifying water from cyanide poison.

Apparatus for producing liquid water from the condensation of atmospheric water vapor includes a transportable housing defining a first air inlet, a second air inlet, and an air outlet; first and second doors operable selectively to open and close the first and second air inlets, respectively; and at least one water condensation unit located in the housing between the first air inlet and the air outlet, and between the second air inlet and the air outlet. The housing is configured so that, when at least one of the first and second air inlets is open, at least a portion of an air flow into the at least one open air inlet is passed through the at least one condensation unit and out the air outlet.

An oxygen concentrator (100) apparatus and a method thereof implement operations control to efficiently release oxygen enriched gas to reduce potential waste. The control methodology may include generating a profile such as a minimum inhalation flow profile of the user. The profile may be based on a size parameter of the user. The method may determine one or more control parameters characterizing a bolus of oxygen enriched gas based on the generated flow profile. The control methodology may then generate a bolus release control signal, such as for a supply valve, according to the determined one or more control parameters. The oxygen concentrator may then, with the control signal, release and deliver a bolus of oxygen enriched gas for a user such as for reducing waste.

A pressure swing adsorption (PSA) system and methods for controlling each PSA cycle performed by the PSA system to produce oxygen enriched gas during productive portions of a user breathing cycle, and to cease production of oxygen enriched gas during non-productive portions of the user breathing cycle, is provided. The PSA system synchronizes PSA cycle phases including adsorption and desorption phases with a user's individual inhalation and exhalation phases, on a breath by breath basis, such that each PSA cycle can be dynamically varied from a succeeding PSA cycle, in real time in response to variations in the user's breathing cycle. An oxygen delivery device including a breathing cycle sensor provides breathing cycle inputs to a controller for use with at least one algorithm to detect breathing flow phases during each user breath, and to synchronize each PSA cycle to the user's breathing flow phases, on a breath-by-breath basis.

A breathing system for removing harmful contaminants, such as microbes and volatile organic compounds, is provided. The breathing system includes a face mask, an inhalation limb, and a plasmonic device. As a contaminated gas flows through an internal chamber of the plasmonic device, the contaminates are oxidized. Specifically, the internal chamber includes a source of photons spaced apart from the nanostructure. The nanostructure is coated in a plasmonic layer, including noble metal nanoparticles. The plasmonic layer is protected from oxidation through a photocatalyst layer disposed thereon.

An air purification module and an air purifier formed thereof are revealed. An air purification module is a standardized module formed by an enclosing casing, at least one ultraviolet light emitting diode (UV LED) and at least one photocatalyst filter. While in use, the UV LED is electrically connected to the power source to emit UV light and drive the photocatalyst filter to be in an activated state for decomposition of bacteria, removal of odors and absorption of particulate pollutants in air flowing in, through and out of an axial air passage inside the enclosing casing. Thereby good air purification is achieved. The air purifier includes a housing with a number of air purification module mounted therein, corresponding fans, and at least one power unit. Thereby the use efficiency of the air purifier is increased and consumers have more choices.

There is provided a portable oxygen concentrator. The portable oxygen concentrator comprises a sieve bed comprising an inlet and an outlet; a first region of adsorbent material adjacent the inlet; and a second region of adsorbent material adjacent the outlet. The first and second regions of adsorbent material comprise beads of adsorbent material. The first region comprises beads of a first size and the second region comprises beads of a second size which is larger than the first size.

A helmet includes a helmet body and a gas detection and purification device. The gas detection and purification device in includes a body, a purification module, a gas-guiding unit, a gas detection module, and a power module. The gas detection module calculates the gas detection data obtained by the gas detection module so as to control the gas-guiding unit to start or stop operation based on the gas detection data. When the gas-guiding unit is in operation, the gas-guiding unit guides the gas into the body and to pass through the purification module for being filtered and purified to become a purified gas, and the gas-guiding unit discharges the purified gas out of the body to the nose portion, or the mouth portion, or both the nose portion and the mouth portion of the wearer for providing the wearer with the purified gas to breath.

A device is provided. The device includes one or more of a container, filtration media, and a vacuum apparatus. The container includes a first hole in a first end of the container and a second hole in a second end of the container opposite the first end. The filtration media is disposed within the container, and is configured to absorb an odor present in inlet air. The vacuum apparatus is coupled to the first hole, and is configured to pull inlet air through the filtration media from the second hole and provide filtered air to the first hole.