A process for preparing magnetic activated carbons including the steps of a) treating an aqueous solution having a biomass hydrothermally at autogenic pressure at a temperature 180 and 250 C., under acidic conditions in the presence of iron ions, to obtain a precursor product, b) activating the precursor product obtained in step a) by mixing an activating agent at elevated temperatures between 550 and 850 C., for a period up to 9h. The disclosure also relates to magnetic activated carbon prepared according to the process and use of the carbon for separation and storage of gases and purification of liquids. A method for separation of particles from a liquid and/or a gas, and method for regenerating magnetic activated carbon by heating using an oscillating electromagnetic field are also disclosed.

A molecular sieve adsorbent composition is provided that includes an inorganic molecular sieve having a surface and a native adsorption property. Carbon having a mean domain size of between 1 and 10 nm is deposited on the surface or admixed into contact with the surface in an amount to reduce the resistivity and within 10% of the native adsorption property. A method for producing an inorganic molecular sieve adsorbent composition includes the application of carbon having mean domain sizes of between 1 and 10 nanometers to a surface of the inorganic molecular sieve adsorbent composition at a temperature that does not exceed 400? C. and under a controlled gaseous environment to produce a carbon containing inorganic molecular sieve adsorbent composition. The carbon containing inorganic molecular sieve adsorbent composition is removed from the controlled gaseous environment to obtain the inorganic molecular sieve adsorbent composition with the decreased resistivity.

A method for purifying a crude hydrogen feed stream utilizes an adsorbent having a N2/Ar selectivity ranging from 2 to 4 at 30 C. and a Henry's law coefficient for argon ranging from 0.15 to 1.0 mmole/g/atma at 30 C. The composition of crude hydrogen streams from processes in which carbon dioxide is captured necessitates new criteria for adsorbent selection to improve recovery.

Proposed is an organometallic structure having excellent adsorption performance for volatile organic compounds (VOCs) and at the same time, having excellent outgassing prevention performance for adsorbed VOCs. An embodiment is a zirconium-based organometallic structure (MOF) characterized by simultaneously securing adsorption performance and outgassing prevention performance for VOCs by introducing an amine group (NH.sub.2) into the crystal structure. An organometallic structure, which is a zirconium-based organometallic structure (MOF) containing fumaric acid as an organic linker, may have excellent adsorption performance and outgassing prevention performance for volatile organic compounds.

A method and composition of matter for detecting and decontaminating hazardous chemicals, the composition of matter including: a magnetic material for any of chemisorbing, molecularly dissociating, or decomposing a hazardous chemical, wherein the magnetic material changes its magnetic moment upon any of chemisorption, decomposition, and molecular dissociation of the hazardous chemical and the change in magnetic moment is used to detect the presence of the hazardous chemical, and wherein the hazardous chemical includes any of toxic industrial chemicals, chemical warfare agents, and chemical warfare agent related compounds.

A method and composition of matter for detecting and decontaminating hazardous chemicals, the composition of matter including: a magnetic material for any of chemisorbing, molecularly dissociating, or decomposing a hazardous chemical, wherein the magnetic material changes its magnetic moment upon any of chemisorption, decomposition, and molecular dissociation of the hazardous chemical and the change in magnetic moment is used to detect the presence of the hazardous chemical, and wherein the hazardous chemical includes any of toxic industrial chemicals, chemical warfare agents, and chemical warfare agent related compounds.

A filtration device including a fluid-impermeable housing having a gas inlet and outlet, and containing within the housing first filter media particles of an extended surface area substrate and containing at least one metal impregnant, and second filter media particles of an extended surface area zirconium hydroxide substrate. The device may be used in atmospheres containing various harmful gases, and may provide particularly useful improvements in NO.sub.x breakthrough times compared to a device containing only the first filter media particles or only the second filter media particles.

A humidity controlling apparatus comprising: a moisture absorption unit including a base material rotatable about a rotation shaft and a macromolecular moisture absorbent provided in a layer on an outer periphery of the base material; and a heat source partially heating the moisture absorption unit, the macromolecular moisture absorbent having a hydrophilic state capable of absorbing moisture in the air and a hydrophobic state which releases the moisture sorbed in the hydrophilic state, the macromolecular moisture absorbent having a nature such that when temperature rises, the macromolecular moisture absorbent changes from the hydrophilic state to the hydrophobic state, and when the temperature falls, the macromolecular moisture absorbent returns from the hydrophobic state to the hydrophilic state, requires small thermal energy and can efficiently control humidity.

The present disclosure is directed to an acidic gas absorbent particulate for capture of an acidic gas from a gaseous stream or atmosphere, the acidic gas absorbent particulate comprising swellable support particles, wherein the swellable support particles contain absorbed amine-functionalised ionic liquid for absorbing the acidic gas, and to apparatuses, processes, methods and uses comprising the same.

The invention discloses an automatic replacement device and an automatic replacement method for a dry-type filter module. The automatic replacement device comprises a guide rail, a moving trolley and an unpowered slide rail, the guide rails are distributed in the length direction of the dry-type paint mist intercepting area, a moving trolley is arranged on the guide rails, the moving trolley can move along the guide rails and carry the dry-type filtering module, and the unpowered sliding rail is arranged on the side of the guide rails and extends to the dry-type paint mist intercepting area. The dry-type filtering module disclosed by the invention can be automatically moved in and out through power control, and manual operation is not needed; the moved-out dry type filtering module is automatically conveyed to a hazardous waste area through a moving trolley and a guide rail; when the dangerous waste carrying trolley drives the removed dry type filtering module away from the dry type filtering module to be replaced and automatically conveys the dry type filtering module to a to-be-replaced area, the dry type filtering module is automatically conveyed to the joint of the spraying room paint mist filtering treatment chamber through the power mechanism, the chamber door is automatically closed, the internal seal is opened, and normal filtering operation work is recovered.