Method and systems for desorbing NH.sub.3 from an NH.sub.3-adsorbent material by exposing the adsorbent material to microwave radiation are described. Also described are methods for increasing an NH.sub.3 cracker's NH.sub.3 utilization and reducing the chance of downstream process contamination. Also described are methods of producing high pressure, high purity H.sub.2 from NH.sub.3.

A process for selective capture of CO.sub.2 from gaseous mixture comprising of: (a) spraying a bio-amine cluster; (b) capturing CO.sub.2 through bio-amine cluster; and (c) desorption of CO.sub.2 through solar assisted electro de-amination, wherein the bio-amine cluster is comprises of: an amine cluster comprising of a quaternary Isobutylamine (IB) with amine terminated Poly(L-lactide) as the chelating agent; a cluster stabilizing agent; a cluster micelle stabilizing agent; and a carbonic anhydrase (CA) functionalized matrix in 0.05-0.2 wt % of total wt % of bio-amine cluster and wherein the CA is obtained from a source selected from the group consisting of Bacillus thermoleovorans, Pseudomonas fragi, Bacillus stearothermophilus and Arthrobacter sp. and a process for production of bio-amine cluster.

A system for capturing and sequestering carbon dioxide includes nanoparticles formed from alkali or alkali metal oxides or hydroxides, such as lithium oxide. Carbon-dioxide containing effluent gasses are exposed to the nanoparticles in fixed beds or fluidized beds, or in a co-flow configuration. The nanoparticle metal oxides are converted to metal carbonates. The nanoparticles can be recovered and the carbon dioxide release by exposing the nanoparticles to an oxygen containing atmosphere at high temperatures.

A low-temperature plasma regeneration system and a low-temperature plasma regeneration method is for inactivated activated carbon, wherein the system comprises a gas supply system, a plasma reaction apparatus and a waste gas treatment apparatus, wherein the gas supply system is configured for supplying gas and water vapor; the plasma reaction apparatus comprises a top electrode, a grounded lower electrode, a regeneration reactor arranged between the electrodes, and a high-voltage alternating current power supply connected with the top electrode; a stirrer is arranged in the regeneration reactor, a gas inlet is arranged at the center position of the top of the reactor, and gas outlets are arranged around the reactor. The system of the present invention has a simple and compact structure, a convenient operation and a function of reaction-and-premix integration.

A method for separating N.sub.2 from a hydrocarbon gas mixture containing N.sub.2 comprising the steps of: i) providing a bed of adsorbent selective for N.sub.2; (ii) passing the hydrocarbon gas mixture through the bed of adsorbent to at least partially remove N.sub.2 from the gas mixture to produce: (a) N.sub.2-loaded adsorbent and (b) N.sub.2-depleted hydrocarbon gas mixture; iii) recovering the N.sub.2-depleted hydrocarbon gas mixture; iv) regenerating the N.sub.2-loaded adsorbent by at least partially removing N.sub.2 from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv); wherein the adsorbent comprises a pyrolized sulfonated macroporous ion exchange resin.

A method for separating natural gas liquids (NGLs) from a hydrocarbon gas mixture containing natural gas liquids and methane, comprising the steps of: i) providing a bed of adsorbent selective for NGLs over methane; ii) passing a hydrocarbon gas mixture containing methane and NGL through the bed of adsorbent to at least partially remove NGLs from the gas mixture to produce: (a) NGL-loaded adsorbent and (b) NGL-depleted hydrocarbon gas mixture; iii) recovering the NGL-depleted hydrocarbon gas mixture; iv) regenerating the NGL-loaded adsorbent by at least partially removing NGLs from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv).

The invention discloses a food container for preserving freshness of food, comprising a container body having a cavity adapted for containing food items; a lid detachably secured on the container body to close the cavity of the container; and one or more food preserving elements capable of absorbing food spoiling gas to preserve freshness of the food items. The one or more food preserving elements are disposed inside the cavity and/or into a material of the food container to preserve the food items for an extended period of time and remove odors.

A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.

Provided herein is a composition comprising high surface area titanium dioxide nanospheres, as well as a process for making the same. Also provided is a composition comprising carbon nanotubes and high surface area titanium dioxide nanospheres, wherein said high surface area titanium dioxide nanospheres are dispersed in said carbon nanotubes. Further provided is a method for making a filter comprising carbon nanotubes, wherein said carbon nanotubes comprise high surface area titanium dioxide nanospheres dispersed therein, as well as filters so produced, and a method of photo-regenerating the filters.

Proposed are a regenerating agent for a radionuclide adsorbent containing aqueous ammonia and organic acid, a regenerating method for a radionuclide adsorbent after using the regenerating agent for the radionuclide adsorbent, a method for treating of a spent regenerating agent obtained by the regenerating method of the spent radionuclide adsorbent, and a method of improving ion exchange capability of the regenerated radionuclide adsorbent obtained by the regenerating method of the spent radionuclide adsorbent.