The present invention relates to a system for air purification. The system comprises at least a first plant and a second plant, and a voltage pulse device connectable to a power source for generating and transmitting a voltage pulse to the first plant, wherein the second plant is connected to the first plant using at least one voltage pulse transmission unit, and the first plant and the second plant are arranged to form one or more contact areas at a leaf portion. The system may also comprise a plurality of plants mounted on a support structure in accordance with some embodiments. The present invention also relates to a voltage pulse device for use with the system for air purification.

A method of capturing carbon dioxide (CO.sub.2) present in air is provided. The method includes adding a carbon-dioxide-capturing device to a heating, ventilation, and air conditioning (HVAC) system of a building. The carbon-dioxide-capturing device is added to one or both of an air handler and air-distribution ductwork of the HVAC system. The method further includes circulating air including carbon dioxide through the carbon-dioxide-capturing device in the HVAC system. A direct decarbonization system for capturing carbon dioxide present in air is also provided. The system includes an HVAC unit, air-distribution ductwork connected to the HVAC unit, and a carbon-dioxide-capturing device disposed in one or both of the HVAC unit and the air-distribution ductwork. Carbon dioxide gas present in air passing through the HVAC unit or the air-distribution ductwork is removable from the air by the carbon-dioxide-capturing device.

A method of capturing carbon dioxide (CO.sub.2) present in air is provided. The method includes adding a carbon-dioxide-capturing device to a heating, ventilation, and air conditioning (HVAC) system of a building. The carbon-dioxide-capturing device is added to one or both of an air handler and air-distribution ductwork of the HVAC system. The method further includes circulating air including carbon dioxide through the carbon-dioxide-capturing device in the HVAC system. A direct decarbonization system for capturing carbon dioxide present in air is also provided. The system includes an HVAC unit, air-distribution ductwork connected to the HVAC unit, and a carbon-dioxide-capturing device disposed in one or both of the HVAC unit and the air-distribution ductwork. Carbon dioxide gas present in air passing through the HVAC unit or the air-distribution ductwork is removable from the air by the carbon-dioxide-capturing device.

Disclosed herein is an air curtain system including a plant cultivation device for air purification. The air curtain system includes: an air purification wall part forming a vertical body of the air curtain system and having a sidewall on which plants are planted, the air purification wall part drawing in air and filtering out pollutants including fine dust and ultrafine dust from the drawn-in air; an air curtain injection part forming a roof of the air curtain system and having an air discharge port formed along a periphery of the roof, the air curtain injection part receiving the air filtered through the air purification wall part and discharging the received air vertically downwards through the air discharge port; and an air suction part forming a floor of the air curtain system and having an air suction port formed along a periphery of the floor, the air suction part suctioning the air discharged through the air discharge port of the air curtain injection part.

Disclosed herein is an air curtain system including a plant cultivation device for air purification. The air curtain system includes: an air purification wall part forming a vertical body of the air curtain system and having a sidewall on which plants are planted, the air purification wall part drawing in air and filtering out pollutants including fine dust and ultrafine dust from the drawn-in air; an air curtain injection part forming a roof of the air curtain system and having an air discharge port formed along a periphery of the roof, the air curtain injection part receiving the air filtered through the air purification wall part and discharging the received air vertically downwards through the air discharge port; and an air suction part forming a floor of the air curtain system and having an air suction port formed along a periphery of the floor, the air suction part suctioning the air discharged through the air discharge port of the air curtain injection part.

A stimulating device for enhancing release of negative air ions by a plant includes a plant pot to receive a culture medium for cultivating the plant, and a negative voltage pulse module that outputs a negative voltage pulse to stimulate the plant via a pair of first and second conductive terminals. The first conductive terminal contacts the culture medium. The second conductive terminal is non-contact with the culture medium when the culture medium is placed in the plant pot.

A living wall system or method involving a plurality of living wall modules. Each living wall module has a module body enclosing a module plenum, the module body having a growth media port and at least one duct port in fluid communication with the growth media port via the module plenum. The plurality of module plenums are interconnected through the plurality of duct ports to form a recirculation plenum. At least one directional blower is received within the recirculation plenum, the at least one directional blower between at least one upstream living wall module and at least one downstream living wall module to direct fluid flow from the at least one upstream living wall module to the at least one downstream living wall module.

A mountable plant cultivation apparatus capable of being mounted on an outer surface of a mounting object, according to the present invention, comprises: a housing disposed along an outer surface of a mounting object to have an adjustable length; and a planting part which is disposed in one side of the housing and in which a plant is planted.

An air filtration system comprising an extrusion frame with an associated grille proximal to an occupied space, the frame dimension for insertion within a drop ceiling or solid ceiling associated with either a plenum air space or directly to a return air duct associated with an air handler and conditioned supply air, a pleated filter positioned adjacent the grille so as to filter air flowing into the plenum air space from the occupied space, the pleated filter dimensioned for entrapping particles in the 1 to 3 micron size, an ultraviolet lamp for emitting UV-C light positioned adjacent the pleated air filter so as to substantially irradiate airborne particles that may pass through the pleated filter and, in particular to irradiate particles associated with microorganisms, including viruses, an electrical switch and associated electrical ballast for controlling operation of the electrical lamp and so as to ensure that the lamp is not energized when the air filtration system is being installed or service; and means for securing the extruded frame of the air filtration system to a drop ceiling or solid ceiling or wall.

An air filtration system comprising an extrusion frame with an associated grille proximal to an occupied space, the frame dimension for insertion within a drop ceiling or solid ceiling associated with either a plenum air space or directly to a return air duct associated with an air handler and conditioned supply air, a pleated filter positioned adjacent the grille so as to filter air flowing into the plenum air space from the occupied space, the pleated filter dimensioned for entrapping particles in the 1 to 3 micron size, an ultraviolet lamp for emitting UV-C light positioned adjacent the pleated air filter so as to substantially irradiate airborne particles that may pass through the pleated filter and, in particular to irradiate particles associated with microorganisms, including viruses, an electrical switch and associated electrical ballast for controlling operation of the electrical lamp and so as to ensure that the lamp is not energized when the air filtration system is being installed or service; and means for securing the extruded frame of the air filtration system to a drop ceiling or solid ceiling or wall.