Introduction: Air purifiers have gained popularity in Iran in recent years, and understanding the different types of air purifiers plays a significant role in selecting the best one available in the market.
How do Air Purifiers Work?
Application of Cold Plasma in Air Purifiers
Eliminating Microorganisms (Microbes, Bacteria, Viruses)
Eliminating Industrial Pollutants (NOX)
Eliminating Dust Particles
6. The operation of an air purification device in neutralizing unpleasant odors
In this article, we will focus on analyzing the operation of air purifiers in the market that utilize cold plasma technology.
How do Air Purifiers Work?
Exploring how air purifiers utilize cold plasma to purify the air.
Plasma is an extremely hot state of matter – so hot that electrons separate from atoms, creating an ionized gas. Plasma is often referred to as the “fourth state of matter,” following solid, liquid, and gas. Just as a liquid boils and becomes gas with added energy, heating a gas forms plasma.
Application of Cold Plasma in Air Purifiers:
Understanding the various applications of plasma in air purifiers and how it eliminates pollutants from the air.
In this article, we have delved into the functionalities of air purifiers equipped with cold plasma technology, shedding light on their effectiveness in combating air pollution and creating a healthier living environment.
The Application of Cold Plasma in Air Purification Devices:
One of the significant applications of cold plasma technology is its effectiveness in neutralizing microorganisms present in the surrounding air, thus purifying the air and promoting healthy breathing. When using an air purification device with cold plasma technology, high-energy particles of cold plasma interact with various microorganisms, dust particles, industrial pollutants, and even unpleasant odors. As a result, harmful substances that can be detrimental to human respiration are eliminated, ultimately providing clean and pollution-free air.
Elimination of Microorganisms (Microbes, Bacteria, and Viruses) in Air Purification Devices:
In this process, cold plasma, consisting of positive and negative ions, electrons, and free radicals, comes into contact with the cell membranes of microorganisms such as microbes, bacteria, and viruses. It first destroys the cell walls and membranes and then enters the cells. Subsequently, the plasma particles (positive and negative ions, electrons, and free radicals) interact with the internal components of the microorganisms, including proteins, enzymes, and cytoplasm, resulting in the complete eradication of microorganisms by breaking down their DNA and RNA, which are the core of cell command and control.
Elimination of Industrial Pollutants (NOx) in Air Purification Devices: The ambient air contains molecules of oxygen (O2) and nitrogen (N2). After the collision with N2 and O2 particles in the air, the plasma components (electrons, positive and negative ions) undergo the following reactions, resulting in the production of reactive nitrogen species (RNS) and reactive oxygen species (ROS):
N2 + e → N + N + e O2 + e → O + O + e
The particles generated by these reactions interact with industrial pollutants such as NO, N2O, and NO2 and convert them into harmless nitrogen and oxygen:
NO + N → N2 + O2 N2O + O → N2 + O2 NO2 + N → N2 + O2
Elimination of Dust Particles in Air Purification Devices: Cold plasma, including positive and negative ions, electrons, and free radicals, interacts with dust particles that are neutral and lack electric charge. The plasma charges these particles, and the charged dust particles are then attracted and collected by the plates of the filter (positive particles are attracted to negative plates, and negative particles are attracted to positive plates). Cleaning the filter will easily remove the dust from inside the air purification device.
Elimination of Unpleasant Odors: The presence of cold plasma, consisting of positive and negative ions, electrons, and free radicals such as O-, O2-, and OH-, effectively eliminates unpleasant odors caused by volatile organic compounds (VOCs). When cold plasma encounters VOC molecules, it breaks down the VOCs and neutralizes the unpleasant smells.
In conclusion, by employing air purification devices equipped with cold plasma technology and filters, one can ensure a clean and safe environment free from various types of pollution in enclosed spaces such as homes, offices, classrooms, and more.