Provided are ozone decomposing compositions comprising a solvent and a polymer. The polymer comprises a structural repeat unit comprising an unsubstituted or substituted carbohydrate moiety. Also provided are methods of decomposing ozone using the compositions, and spray coatings, items of clothing, fabrics, carpets, paints, sealants, finishes, air-filters, face-masks, cosmetics, creams, lotions and coatings incorporating the polymer.

Methods, systems, and devices for an automotive vehicle air cleaning system are provided which may be configured to operate in at least an adsorption mode and an in-situ regeneration mode are disclosed. The system includes at least one type of sorbent material configured to remove CO.sub.2 from a cabin of an automotive vehicle according to a repeated adsorption-desorption swing cycle, a first inlet configured to supply a first airflow of air from the cabin to the system during an adsorption mode, and a first outlet configured to return the first airflow after passing over and/or through the sorbent material during the adsorption mode. The system includes a second inlet configured to supply a second airflow of outside air to the system during a regeneration mode, a second outlet to return the second airflow after passing over and/or through the sorbent material during the regeneration mode.

Methods, systems, and devices for an automotive vehicle air cleaning system are provided which may be configured to operate in at least an adsorption mode and an in-situ regeneration mode are disclosed. The system includes at least one type of sorbent material configured to remove CO.sub.2 from a cabin of an automotive vehicle according to a repeated adsorption-desorption swing cycle, a first inlet configured to supply a first airflow of air from the cabin to the system during an adsorption mode, and a first outlet configured to return the first airflow after passing over and/or through the sorbent material during the adsorption mode. The system includes a second inlet configured to supply a second airflow of outside air to the system during a regeneration mode, a second outlet to return the second airflow after passing over and/or through the sorbent material during the regeneration mode.

A method and system for ozone treatment of air for a vehicle cab where the system monitors the level of ozone in treated air, and is arranged to perform further treatment of the treated air if the detected ozone levels exceed a threshold level. Such further treatment may include adjusting the flow rate of air in the system, recirculating the treated air through an air filter to remove ozone from the treated air; providing an ozone-reducing substance to the treated air to lower the level of ozone in the treated air, and/or ejecting at least a portion of the treated air to the environment.

A method and system for ozone treatment of air for a vehicle cab where the system monitors the level of ozone in treated air, and is arranged to perform further treatment of the treated air if the detected ozone levels exceed a threshold level. Such further treatment may include adjusting the flow rate of air in the system, recirculating the treated air through an air filter to remove ozone from the treated air; providing an ozone-reducing substance to the treated air to lower the level of ozone in the treated air, and/or ejecting at least a portion of the treated air to the environment.

Air filters formed from mats of protein-containing nanowires are provided. The nanowires are formed into a mat with pores that allow air to pass through while physically filtering particulate matter. The protein in the protein-containing nanowires also serves to chemically filter polluted air passed through the filter. Specifically, chemical functional groups from the many amino acids that comprise the protein of the protein-containing nanowire react with certain chemical pollutants (e.g., carbon monoxide and formaldehyde) in order to capture or otherwise neutralize the pollutant. Accordingly, the single nanofiber mat performs two filtering functions. Methods of filtering air using the provided air filters are also disclosed, as well as methods for making the air filters from protein-containing nanofibers.

The invention relates to an air-conditioning device for a space to be air-conditioned. The air-conditioning device has a housing including an air supply and an air discharge. In the housing, a flow path is formed between the air supply and the air discharge. In the flow path, at least one heat exchanger, a blower, and a means for generating an excited gas are provided. Furthermore, a surface coating is provided in the flow path, which is configured for the catalytic decomposition of the ozone content of the excited gas, and which is arranged downstream of the means for generating the excited gas.

The invention relates to an air-conditioning device for a space to be air-conditioned. The air-conditioning device has a housing including an air supply and an air discharge. In the housing, a flow path is formed between the air supply and the air discharge. In the flow path, at least one heat exchanger, a blower, and a means for generating an excited gas are provided. Furthermore, a surface coating is provided in the flow path, which is configured for the catalytic decomposition of the ozone content of the excited gas, and which is arranged downstream of the means for generating the excited gas.

A water treatment system including: a biological treatment stage for treating an organic wastewater by an action of a microorganism; an ozone gas producing stage for generating ozone gas; a sludge transferring stage for withdrawing and transferring a part of the microorganism-mixed liquid in the biological treatment stage; an ozone treatment stage for bringing ozone into contact with the part of the microorganism-mixed liquid transferred; and a treated liquid returning stage for returning the treated liquid after the ozone treatment from the ozone treatment stage to the biological treatment stage. Undecomposed aggregated microorganisms after the ozone treatment are separated and concentrated, and an ozone treatment is selectively applied to the aggregated undecomposed microorganisms thus separated and concentrated.

An air separation system includes a high temperature ozone converter, a mechanical separator, and an air separator downstream of the high temperature ozone converter and the mechanical separator. The air separator receives high temperature air and provides high temperature nitrogen-enriched air and high temperature oxygen-enriched air. The air separation system further includes a heat exchanger downstream of air separator that receives and cools the high temperature nitrogen-enriched air.