Disclosed is a method and device for inactivating or killing airborne bacteria, fungi, molds and viruses by passing the air through a filter material formed of a fabric having particles of zinc disposed in discrete physically isolated locations, wherein the particles of zinc and oxygen from the air form half cells of a battery whereby to create an electrical field that inactivates or kills airborne bacteria, fungi, molds and viruses passing through the filter material.

A cartridge for applying an electromagnetic field (EMF) to at least one toxin in a wound in the skin of a person or animal is provided. The cartridge includes a power supply, a controller coupled to the power supply and providing a voltage between about 0.2V and 3V to an array of electrodes configured to transmit the EMF to the skin about the wound site. A cartridge for applying an ultrasonic field to at least one toxin in a wound in the skin of a person or animal is also provided. The ultrasonic cartridge may include a power supply, a controller coupled to the power supply and providing a voltage to at least one sonotrodes configured to transmit the ultrasonic field to the skin about the wound. The cartridge may also include a sensor for measuring the resistance or impedance in the tissue to be treated and the controller can adjust the ultrasonic field based on the impedance or resistance.

An engine tail gas ozone purifying system and method. The engine tail gas ozone purifying system comprises reaction fields (220, 202) used for mixture reaction of an ozone stream and a tail gas stream. A large amount of urea does not need to be added and the purification effect is good.

An exhaust gas dust removal system, comprising a dust removal system inlet, a dust removal system outlet and an electric field apparatus, the electric field apparatus comprising an electric field apparatus inlet, an electric field apparatus outlet, a dust removal electric field cathode and a dust removal electric field anode, the dust removal electric field cathode and the dust removal electric field anode being used for producing an ionising dust removal electric field. A dust collection area of the dust removal electric field anode is larger than a discharge area of the dust removal electric field cathode, so that an asymmetric electrode attraction force is produced between the electrodes, to reduce electric field couplings.

In a method and apparatus (10) for air disinfection a unipolar corona discharge zone (26) is formed between an ionizing portion (15) of a first electrode (14) and a non-ionizing second electrode (18) by applying high DC voltage (22′, 22″) across the first and second electrodes and water molecules in an air flow (25) conveyed through the corona discharge zone are converted to hydrogen peroxide molecules. An electric field (27, 27′, 27″) is generated across the air flow close to the corona discharge zone for preventing ions escaping from the corona discharge zone into the atmosphere. This allows a higher corona discharge current to be applied than would be permitted if ions were able to escape into the atmosphere, which results in a higher yield of hydrogen peroxide and increases the efficiency of disinfection. It also helps to prevent dust from settling on the ionizing portion (15).

An engine exhaust gas ozone purification method, comprising: mixing a ozone stream and an exhaust stream to react, and removing nitric acid in a reaction product of the ozone stream and the exhaust stream mixture. A gas that has a nitric acid mist is caused to flow through a first electrode (301). When the gas that has the nitric acid mist flows through the first electrode (301), the first electrode (301) charges the nitric acid mist in the gas, and a second electrode (302) applies an attractive force to the charged nitric acid mist, so that the nitric acid mist is moved toward the second electrode (302) until the nitric acid mist adheres onto the second electrode (302). The present engine exhaust gas ozone purification method does not need to add a large amount of urea, and the purification effect is good.

A system and method for purifying engine exhaust by using ozone; the system for purifying engine exhaust by using ozone comprises a reaction field (202), which is used to mix an ozone stream and an exhaust stream for reaction; the system has an excellent purification effect without needing to add a large amount of urea.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

The present disclosure relates to methods of scrubbing of gas by exposure to electrons and apparatuses therefor. Such methods and apparatuses could be used to reduce harmful emissions created by the burning of fossil fuels, e.g. to power ships. According to one aspect there is provided apparatus for electron irradiation scrubbing, said apparatus comprising: an anode; a cathode a nanostructure located between said anode and said cathode, said nanostructure being configured to field-emit electrons in response to the presence of an electric field between the anode and cathode when a potential difference is established therebetween; and a housing coupled to said nanostructure and configured for locating the nanostructure so that it extends into a container containing gas to be scrubbed such that an interior of said container can be exposed to said electrons. According to further aspects there are provided systems comprising such apparatus and methods making use of it.