A method for preparing a bactericidal film on fiber cloth, comprising cleansing a reel of fiber cloth; placing the reel of fiber cloth into a vacuum chamber; supplying a DC power and a mid-frequency power; introducing argon gas to increase the chamber pressure to 0.3 Pa; position sputtering targets in the following order: silicon target, silicon carbide target, silver target, silicon carbide target, silver target, silicon carbide target and silver target, and then sputtering the targets simultaneously; wherein the silicon targets act as a bonding layer between the bactericidal film and the substrate; stopping the silicon targets, the silicon carbide targets and the silver targets first, and then turning off the argon gas; injecting air into the chamber until the pressure in the chamber and the atmospheric pressure are balanced.

A system for cleaning a compartment includes a conductive thread incorporated near a surface that has microbes on it. An electric current may flow through the conductive thread to kill the microbes on the surface through low-frequency electromagnetic pulse sterilization of the surface. The conductive trace is also in contact with air in the compartment. The electric current flowing through the conductive trace also ionizes the air within the compartment, which produces charged particles that are removed from the air.

A system for cleaning a compartment includes a conductive thread incorporated near a surface that has microbes on it. An electric current may flow through the conductive thread to kill the microbes on the surface through low-frequency electromagnetic pulse sterilization of the surface. The conductive trace is also in contact with air in the compartment. The electric current flowing through the conductive trace also ionizes the air within the compartment, which produces charged particles that are removed from the air.

Provided is an ion generating device for organic matter decomposition for generating ions to decompose organic matter stored in a tank. The ion generating device includes a needle electrode and a plate electrode, both facing each other, and a direct-current power supply unit configured to apply a direct-current voltage with positive polarity to the needle electrode. The direct-current power supply unit includes a voltage controller configured to set the direct-current voltage to a specified voltage value to produce positive corona discharge between the needle electrode and the plate electrode under atmospheric pressure.

Provided is an ion generating device for organic matter decomposition for generating ions to decompose organic matter stored in a tank. The ion generating device includes a needle electrode and a plate electrode, both facing each other, and a direct-current power supply unit configured to apply a direct-current voltage with positive polarity to the needle electrode. The direct-current power supply unit includes a voltage controller configured to set the direct-current voltage to a specified voltage value to produce positive corona discharge between the needle electrode and the plate electrode under atmospheric pressure.

The invention involves the use of supercritical or near supercritical fluids to inactivate pathogens in biologic materials which may or may not be contaminated by pathogens. The pathogen reduced material is then inserted into empty, sterile containment vessels. The apparatus can be used as a means to achieve terminal sterilization of the biologic materials. The preferred method of use for the apparatus includes operation of a conveyor belt to move and fill bottles, flasks, containers, or vials in an assembly line to create the finished product in an effective and timely fashion.

The present invention is directed to methods and apparatus for pathogen decontamination of personal protective equipment (PPE), face filtering respiratory devices (FFR) and single use medical devices (SUD) by supercritical fluids, near critical fluids, and critical fluids with or without polar cosolvents. The invention includes a closed processing chamber for containing and processing the PPE, FFR, and SUD by a supercritical fluid, near critical fluid, and critical fluid with or without polar solvents at a specified temperature and pressure for a specified time sufficient to disrupt or inactivate pathogens and viruses on the PPE, FFR, and SUD without damaging the protective equipment so that they may be revitalized for continued use.

A method for inactivating and/or destroying microscopic biological pathogens includes placing an object to be treated in a pressure vessel, exposing the object to a pressurized noble gas at a selected target treatment pressure for a selected treatment time duration, then decreasing the treatment chamber pressure from the target treatment pressure to external atmospheric pressure within a selected depressurization time duration. The method has been tested effective against pathogens for target treatment pressure in a range from 60 psi to 150 psi and treatment time duration in a range from 300 seconds to 600 seconds.

The present disclosure sucks air in hospital room using a compressor to maintain an inner portion of the hospital room in a negative pressure state, and creates a high-temperature and humid environment by a water spray, the compressor, and a sterilization chamber to kill bacteria or viruses. In addition, the compressor uses power generated by a turbine, and is configured so that heat of air coming out of the compressor is recovered to a suction side of the compressor, such that efficiency of a system may be secured. Further, some of clean air generated while passing through the sterilization chamber may be directly supplied again to the hospital room through a bypass means.

A filter unit for a mixing apparatus includes a hydrophilic filter and a hydrophobic vent filter. The hydrophilic filter is configured to receive a fluid including a liquid and gas. The hydrophilic filter is further configured to sterilize the liquid. The hydrophobic vent filter is configured to receive the gas from the hydrophilic filter. The hydrophobic vent filter further includes a vent and a membrane configured to separate an interior of the filter unit from an exterior of the filter unit, the gas being vented from the filter unit by flowing across the membrane and out of the vent. In some embodiments, the filter unit further includes a defoaming device configured to receive gas, foam comprised the liquid containing trapped gas, and some of the liquid from the hydrophilic filter and is further configured to release at least some of the gas from the foam.