Abstract: An aminated magnesium oxide adsorbent containing a magnesium oxide matrix having disordered mesopores and a BET surface area of 320 to 380 m2/g, and a polyamine selected from the group consisting of an ethyleneamine having a molecular weight of up to 450 g/mol and a polyethylene imine having a number average molecular weight of greater than 500 g/mol and up to 20,000 g/mol, wherein the polyamine is impregnated within the disordered mesopores of the magnesium oxide matrix. A method of making the aminated magnesium oxide adsorbent and a method of capturing CO2 from a gas mixture with the aminated magnesium oxide adsorbent are also described.

Abstract: Systems for generation of liquid water are provided. In embodiments, the systems comprise a thermal desiccant unit comprising a porous hygroscopic material located within a housing including a fluid inlet and a fluid outlet, a working fluid that accumulates heat and water vapor upon flowing from fluid inlet of the housing, through the porous hygroscopic material, and to the fluid outlet of the housing, a condenser comprising a fluid inlet and a fluid outlet for condensing water vapor from the working fluid; an enthalpy exchange unit operatively coupled between the thermal desiccant unit and the condenser, wherein the enthalpy exchange unit transfers enthalpy between the working fluid output from the thermal desiccant unit and the working fluid input to the thermal desiccant unit, and, wherein the enthalpy exchange unit transfers enthalpy between the working fluid output from the condenser and the working fluid input to the condenser.

Abstract: A co-current contacting system for removing impurities from a gas stream is described herein. The co-current contacting system includes a co-current contactor configured to co-currently flow a gas stream including impurities and a liquid stream through the co-current contactor. The co-current contactor is also configured to incorporate liquid droplets formed from the liquid stream into the gas stream, such that the impurities from the gas stream are absorbed by the liquid droplets. The co-current contacting system also includes a separator configured to remove the gas stream from the liquid droplets including the impurities, generating a purified gas stream and a rich liquid stream. The co-current contacting system is configured to recycle the rich liquid stream for reuse as a portion of the liquid stream flowing into the co-current contactor.

Abstract: A system for scrubbing and monitoring H2S includes: a sample inlet valve that controls an input stream of the hydrocarbon gas from the gas canister; a first scrubber that removes a first portion of H2S from the input stream and that outputs a first stream with less H2S than the input stream; a second scrubber that removes a second portion of H2S from the first stream and that outputs a second stream with less H2S than the first stream; a H2S converter that converts all remaining H2S in the second stream into a di-ketone and that outputs an output stream with a concentration of the di-ketone; an optical detector that measures the concentration of the di-ketone in the output stream; and a processor that determines a concentration of H2S in the second stream based on the concentration of the di-ketone in the output stream.

Abstract: An adsorptive material for adsorption of a noble gas can include a mesoporous support material having a plurality of pores and a pattern of metal atoms deposited onto the mesoporous support material.

Abstract: The invention discloses methods and apparatus(es) for the removal and control of pollutants such as gases and suspended particulates in the air of an enclosed space or an outdoor environment by passing the air through absorbent media. The absorbent media includes any liquid, solid or combination of liquid and solid media that is capable of absorbing a material in which it comes in contact. In one aspect of the invention, formaldehyde is removed by air sparging through a liquid such as water, optionally containing additional scavenging agents.

Abstract: A filter oil composition and a method for removing airborne molecular contaminants from air are provided. The composition includes a first portion comprising paraffinic oil by volume of the composition, a second portion comprising polyalphaolefin (PAO) by volume of the composition, and a third portion comprising red dye by volume of the composition. Applying the filter oil composition to a cotton air filter material causes tackiness throughout the air filter material, thereby enhancing filtration of air passing through the filter. The composition generally is substantially non-reactive, has an excellent oxidation stability, possesses good thermal stability, and retains a suitable viscosity at a normal operating temperatures of an automobile engine. In an embodiment, the composition comprises 96.74% paraffinic oil by volume, 3.20% polyalphaolefin (PAO) by volume, and 0.06% red dye by volume. A viscosity of the composition at 100 degrees-C ranges between substantially 7.2 and 7.6 centistokes (cSTs).

Abstract: Drying compressed air while utilizing a method for preemptive overload avoidance of moisture to a desiccant bed, including a recovery control process. The method may include a purge means, an initialization period for pre-learning to develop usage-profile log performance summary to compare against real-time data and a protocol for a normal state, a recovery state and a supplemental purge state and means to reestablish normal operations. A procedure for standby and overload alarm alerting states are also described. The purge means may be fixed rate or modulating. The system may have cycle times decrementing or incrementing stepwise in a predetermined or varying time frame to respond to on-going trending data in order to correct imbalance loading conditions by adjusting drying and regenerating cycle times, thus affording a stable delivery of quality dewpoint compressed air to the dryer output.

Abstract: To reduce loss due to water evaporation and to efficiently release moisture from a moisture absorbing portion, in the humidity controller according to the present invention, a moisture absorbing portion (2) is formed to include at least two gel sections each with a different thermal conductivity and to release absorbed moisture from an exposed surface (31) that is a specific region exposed outside and that is disposed on the surface opposite to a heater (5) on the basis of heating by the heater (5).

Abstract: A reusable air filter and methods are provided for filtering air being conducted to an air intake of an internal combustion engine. The reusable air filter comprises a filter medium configured to pass an airstream and entrap particulates flowing within the airstream. The filter medium is comprised of cotton gauze disposed in a sinusoidal arrangement that provides a filtration surface area that is larger than a perimeter area of the filter medium. An end cap and base may be configured to retain the filter medium therebetween. The base provides an interface between the air filter and an air inlet of the engine. The filter medium may be disposed in a flat, panel shape that is bordered by a supportive tray. Support rods may be embedded within the tray to prevent bowing of the tray due to air pressure when coupled with an air box of the engine.

Abstract: This disclosure relates to techniques for producing liquid water from ambient air. In certain embodiments, a system includes a regeneration fluid pathway configured to receive a regeneration fluid and a thermal unit configured to heat the regeneration fluid. The system can further include a continuous desiccant unit that comprises an adsorption zone and a desorption zone, as well as a batch desiccant unit that includes a regeneration inlet and a batch desiccant housing. The batch desiccant housing can include a batch desiccant inlet configured to input the ambient air, a batch desiccant outlet configured to output a batch output fluid, and a batch desiccant material. A condenser unit can be configured to produce liquid water from the regeneration fluid, and the system can maximize a water production rate of the condenser unit based on an amount of heat carried by the regeneration fluid.

Abstract: The disclosure provides for an adsorbent bed assembly for separation of gaseous mixtures. The assembly includes a body defining an interior cavity. The body includes an outer shell, and first and second ends engaged with the outer shell that include inputs/outputs. A central support structure is positioned within the interior cavity and is engaged with the body or forms a portion thereof. Anti-telescoping devices are positioned about the central support structure, at least one of which is affixed to the central support structure. Each anti-telescoping device includes a plurality of spokes extending within the interior cavity from or proximate the central support structure towards the outer shell.

Abstract: A method for manufacturing a carbon dioxide adsorbent includes: forming a kneaded product containing a hydrophilic fiber, a powdery porous material, and an aqueous hydrophilic binder dispersion into particles and drying the particles to generate porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder; and preparing an aqueous amine solution having an amine concentration of 5% or more and 70% or less and a temperature of 10° C. or higher and 100° C. or lower, impregnating the aqueous amine solution into the porous material particles, and aeration-drying the porous material particles impregnating the amine. The carbon dioxide adsorbent contains the porous material particles and the amine carried by the porous material particles, the porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder.

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: An air pollution remediation system is provided. The systemic apparatus includes a tubular column having a plurality of spaced apart vents along its outer surface. Each vent has adjustable louvers for controlling the airflow therethrough. An airflow conduit extends along the longitudinal length of the column with porous layers and a mass of absorbent disposed between the airflow conduit and the plurality of vents. A fan fluidly coupled to the airflow conduit urges ambient air into the airflow conduit and through the porous layers and the mass of absorbent and out of the vents in a selectively controlled manner by way of the adjustable louvers. A prefilter may be disposed upstream of the fan. A network of the systemic apparatus can be arranged to provide, in a selective enabled manner through the adjustable louvers, a contiguous looping canopy of purified air over large open spaces.

Abstract: A pressure swing adsorption type hydrogen manufacturing apparatus includes a process control unit that controls operation of adsorption towers that generate a product gas by adsorbing, using adsorbents, adsorption target components other than hydrogen components from a source gas, in a state where an adsorption process, a pressure-equalization discharge process, a desorption process, and a pressure-restoration process are successively repeated.

Abstract: Lightweight, portable oxygen concentrators that operate using an ultra rapid, sub one second, adsorption cycle based on advanced molecular sieve materials are disclosed. The amount of sieve material utilized is a fraction of that used in conventional portable devices. This dramatically reduces the volume, weight, and cost of the device. Innovations in valve configuration, moisture control, case and battery design, and replaceable sieve module are described. Patients with breathing disorders and others requiring medical oxygen are provided with a long lasting, low cost alternative to existing portable oxygen supply devices.

Abstract: An air purification device includes an adsorption block, a housing, an introduction port for indoor air, an introduction port for heated air, a return port for indoor air, and a discharge port for used regeneration air. The adsorption block adsorbs purification target substances in indoor air, and is regenerated by dispersing the adsorbed purification target substances by circulating heated air. The housing accommodates the adsorption block therein. The introduction port for indoor air and the introduction port for heated air are provided on one end side of the housing. The return port for indoor air and the discharge port for used regeneration air are provided on the other end side of the housing. An insulating layer is provided between the housing and an outer surface of the adsorption block.

Abstract: An incubator for cell and tissue culture under controlled atmospheric conditions has a primary air flow control device that forms a primary, preferably laminar flow, air veil across an opening that allows access to the cells or tissue cultures disposed within the incubator. Preferably, most if not all of the air in the primary (laminar flow) air veil is recirculated, and a secondary air flow control device is used that forms a secondary, preferably laminar flow, air veil between the primary (laminar flow) air veil and a user of the incubator.

Abstract: A system for enhancing adsorption of contaminated vapors to increase treatment capacity of a regenerable, synthetic adsorptive media. The system includes an inlet configured to receive a flow of contaminated vapors. One or more vessels are coupled to the inlet, the one or more vessels each including a regenerable, synthetic adsorptive media therein, are configured to remove contaminants from the vapors by adsorption. A vapor cooling subsystem is coupled to the inlet, and configured to cool the flow of contaminated vapors, thereby increasing the treatment capacity of the regenerable synthetic adsorptive media.