Disclosed herein are methods and systems to isolate nitrogen from a mixture of gases. In an embodiment, a method of isolating nitrogen from a gaseous mixture involves contacting the gaseous mixture with a superparamagnetic catalyst to form a reaction mixture, and exposing the reaction mixture to a fluctuating magnetic field at ambient conditions.

A process and system for producing a fermentable gas stream from a gas source that contains one or more impurity which may be harmful to the fermentation process is provided. To produce the fermentable gas stream, the gas stream is passed through a specifically ordered series of removal beds. The removal beds remove and/or convert various impurities found in the gas stream which may have harmful effects on downstream removal beds and/or inhibitory effects on downstream gas fermenting microorganisms. At least a portion of the fermentable gas stream may be capable of being passed to a bioreactor, which contains gas fermenting microorganisms.

Both a system and a method for scrubbing a contaminated gas stream with a glycerol solution are disclosed. The system includes a contaminated gas stream in need of purification, along with a column which receives the contaminated gas stream. A glycerol solution is also received by the column and is used to scrub the contaminated gas stream in the column. The glycerol solution is used to reduce at least three contaminants from the gas stream, and includes greater than 50% glycerol and less than 98% glycerol. In one embodiment, the glycerol solution includes between 0.5% to 10% salts, wherein the salts are sodium based, potassium based or a combination thereof. The salts act catalytically to convert glycerol and carbon dioxide to glycerol carbonate.

A CO.sub.2 recovery apparatus according to the present invention comprises: an absorption tower comprising a CO.sub.2 absorption unit in which an exhaust gas containing CO.sub.2 and a lean solution comprising an amino group-containing compound are brought into contact with each other to allow the lean solution to absorb CO.sub.2; a regeneration tower in which CO.sub.2 contained in a rich solution is separated to regenerate the rich solution; and a purification unit in which an amino group-containing compound in a CO.sub.2-removed exhaust gas obtained by removing CO.sub.2 in the CO.sub.2 absorption unit is removed from, wherein the purification unit comprises a catalytic unit in which a photocatalyst is supported on a carrier including a gap through which air can pass, an activation member which activates the photocatalyst, and a power supply unit. The activation member is a pair of electrodes comprising a first electrode and a second electrode.

An ionic oxidation refreshing system for refreshing an odorized item, comprising an enclosure with an airflow system to contact the odorized item on all sides; an ionization system that produces a positively charged ionized ozone gas mixture inside of the enclosure, killing germs, including odor-causing bacteria, viruses, molds, and fungus, and provides the odorized item inside the enclosure with a net positive charge; a filter that neutralizes and filters out any toxic by-products; an electrostatic liquid atomization system that creates a fine mist of a quick-cleaning solution, and, in conjunction with the airflow system, causes solution droplets to penetrate deep into the odorized item and agitate a surface of the odorized item, ensuring the formula is evenly delivered onto the odorized item without over saturating any area.

Systems and methods directed at removing HCN from an FCC process flue gas (and/or generated in the catalyst system reactions themselves) such that the final HCN output is satisfactory; while, in so doing, avoiding undesirable levels of other pollutants contained in that exhaust gas such as NOx. A system includes an assembly having a fluid catalytic cracking (FCC) unit generating a flue gas with HCN and NOx and a catalyst device placed in the flue gas line to remove HCN and NOx. The catalyst device having one or more SCR catalytic articles, as in one free of platinum group metal material (PGM) or a dual functioning SCR catalyst with PGM, or a combination of each. The assembly can be provided with an ammonia supplier and optionally an H2O supplier with associated injection for supply into the flue gas upstream of a catalytic article(s).

An integrated waste gas treatment system includes an adsorption/desorption device that receives a waste gas that includes an organic compound and an organic nitrogen compound exhausted from a semiconductor manufacturing facility, where the adsorption/desorption device adsorbs the organic compound and the organic nitrogen compound and concentrates and desorbs the organic compound and the organic nitrogen compound, and a catalytic decomposition device disposed adjacent to the adsorption/desorption device, where the catalytic decomposition device includes a catalytic chamber that provides a gas passage through which a gas desorbed from the adsorption/desorption device flows and an oxidation-reduction catalyst disposed in the gas passage that removes the organic compound and the organic nitrogen compound from the desorbed gas. The organic compound and the organic nitrogen compound are subjected to an oxidation treatment by the oxidation-reduction catalyst, and nitrogen oxides generated by the oxidation treatment are removed by a selective reduction reaction.

The present invention relates to an apparatus for reducing greenhouse gas emission in a vessel and a vessel including the same, in which CO.sub.2 absorbed by taking only a part of the absorbent liquid used when collecting CO.sub.2 is removed, so that the device sizes of an absorbent liquid recycling unit and an absorbent liquid circulating unit is kept small and continuous operation is enabled. Or in which exhaust gas is cooled by a heat exchange method, thereby preventing the decrease in a concentration of an absorbent liquid, and CO.sub.2 absorbed by taking only a part of the absorbent liquid used when collecting CO.sub.2 is removed and an unreacted absorbent liquid is continuously circulated, thereby enabling continuous operation.

An integrated waste gas treatment system includes an adsorption/desorption device that receives a waste gas that includes an organic compound and an organic nitrogen compound exhausted from a semiconductor manufacturing facility, where the adsorption/desorption device adsorbs the organic compound and the organic nitrogen compound and concentrates and desorbs the organic compound and the organic nitrogen compound, and a catalytic decomposition device disposed adjacent to the adsorption/desorption device, where the catalytic decomposition device includes a catalytic chamber that provides a gas passage through which a gas desorbed from the adsorption/desorption device flows and an oxidation-reduction catalyst disposed in the gas passage that removes the organic compound and the organic nitrogen compound from the desorbed gas. The organic compound and the organic nitrogen compound are subjected to an oxidation treatment by the oxidation-reduction catalyst, and nitrogen oxides generated by the oxidation treatment are removed by a selective reduction reaction.

To provide a reactor control system capable of achieving an efficient operation of a reactor. In a reactor control system in an embodiment, an inverse analysis part finds, as medium performance distribution data, a medium performance distribution in which performance of a medium changes in a flow direction in which a reactant introduction fluid and an adsorption substance introduction fluid pass through the medium by executing an inverse analysis regarding reactant introduction fluid measurement data, adsorption substance introduction fluid measurement data, and discharge fluid measurement data. A control part executes output of a control signal based on the medium performance distribution data.