48 results about "Nitrogen Protoxide" patented technology

Processes are disclosed for the microbial nitritation of ammonia that attenuate the production of at least one of nitrate anion and nitrous oxide. The processes use an ME biocatalyst having a highly porous, hydrophilic polymeric structure with ammonia-oxidizing microorganisms substantially irreversibly retained therein. The processes are particularly useful for integration with anammox processes.

The present disclosure generally pertains to a rocket propulsion oxidizer compound that is a solution, is a homogenous and stable liquid at room temperature and includes nitrous oxide and nitrogen tetroxide. In addition, an apparatus is provided for burning a fuel and nitrous oxide / nitrogen tetroxide. The apparatus has a combustor, a catalyst, a nitrous oxide / nitrogen tetroxide supply passage for directing the nitrous oxide / nitrogen tetroxide to a contact position with the catalyst, and a fuel supply passage for supplying the fuel to the combustor. The catalyst acts to facilitate decomposition of the nitrous oxide / nitrogen tetroxide, while the combustor burns the fuel, the decomposed nitrous oxide / nitrogen tetroxide and / or nitrous oxide / nitrogen tetroxide decomposed in the reaction.

The invention relates to a method and device for reducing nitrogen protoxide formed by catalytic combustion of ammonia and oxygen into nitrogen protoxide. The invention provides the use of a catalyst system comprising at least a first catalytic array and at least a second catalytic array for the catalytic combustion of ammonia and oxygen into nitrogen protoxides, first catalytic array being a platinum rhodium array and upstream second catalyst array being a platinum rhodium array with 2 to 4 weight % of rhodium.

A method of using micro-organisms to continuously and sustainably regenerate zeolite cation exchange capacity (CEC) for removing nitrogen (ammonium, nitrite, and nitrate) from wastewater. The zeolite immobilizes the ammonium ions, and the micro-organisms ingest the ammonium from the surface of the zeolite thereby freeing the cation exchange sites to trap more ammonium. The zeolite is continuously regenerated by the microbes, sustainably maintaining available ion exchange capacity for removing ammonium, and does not need to be shut down for regeneration or replacement. The microbial complex contains nitrifiers, anammox, denitrifiers, archaea, and others. All the micro-organisms co-exist in the same reactor promoting symbiotic interactions, thereby increasing treatment efficiency. The end product is di-nitrogen gas which dissipates into the atmosphere. The system does not require aeration, operates by gravity flow, and has very low energy requirements. Maintenance is minimal, and the system can significantly reduce greenhouse gas emissions (nitrous oxide).Notes: This document uses the terms ammonia and ammonium interchangeably, just as the compounds themselves are interchangeable (NH3+H+NH4+). In aquatic systems ammonia (NH3) is predominantly found in the ionic form as ammonium (NH4).

Disclosed is a method for producing trifluoroamine oxide, the method comprising: a step for producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst, wherein unreacted gas including nitrogen (N2) generated by the reaction is removed, and nitrogen trifluoride and nitrous oxide are further injected to produce the intermediate product; and a step for producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride.

Method for reducing the content of nitrogen oxides NOx and nitrous oxide N2O in an input gas, comprising the steps of: treating said gas with a first amount of a NOx reducing agent in a first de-NOx catalytic bed; treating the effluent of said first de-NOx catalytic bed in at least one de-N2O catalytic bed for removal of N2O; treating the effluent of said at least one de-N2O catalytic bed with a second amount of a NOx reducing agent in a second de-NOx catalytic bed.