With the prevalence of air pollution, the need to purify and make the air suitable for breathing is becoming important especially in urban areas. Also, the presence of various environmental allergens such as dusts, dust mites, pet danders and others have led to the increase in respiratory related conditions such as allergic pneumonitis, asthma, chronic obstructive pulmonary disease, emphysema and the like. Due to this, cleaning the air is a need for most homes. However, the air we breathe is not as tangible as water, which we can easily purify by the use of filtration, distillation and reverse osmosis. Air is free flowing and we can never aim at purifying all the air volume at home just by using aerosol sprays. In this line, air purification and ionization come to place.
What is An Air Ionizer?
An air ionizer is a special device that utilizes high voltage to put an electrical charge to molecules in the air. Most air ionizers are especially designed to create negatively charged ions, but some such as the ESD ionizers creates a static charge. The process of creating electrically charged air molecules helps in the purification of the air. Air ionizers can be bought alone, but some heating and cooling units actually have built-in air purifiers.
Most of the atoms in the air have a neutral charge, which makes air particulates mix to the air we breathe. When the air atoms are negatively charged, the tendency is they get attracted with positively charged ions, making them knocked out from the air and purifying the air we breathe.
The Mechanism of Air Ionization
Air purifiers in the form of air ionizers use a method called the corona discharge. This corona discharge is an intense electrical field and is responsible for creating charged molecules. When air particulates pass through the corona discharge, the molecules pick up additional charge to make them anions or negatively charged atoms. Dusts, contaminants and other larger particles are usually ionized as anions because they are large enough to be detected as they pass through the corona discharge.
When the air contaminants become negatively charged, they become attracted with anything with a positive charge. In this line, a metal plate located inside the air ionizer is a positively charged one, which attracts the air contaminant. On the other hand, positively charged air contaminants become attracted with a negatively charged plate inside the air ionizer. As a result, when the air leaves the air ionizer, it is already purified from air contaminants.
Some particles may not be attracted within the air ionizer, but as the negatively charged ions and positively charged ions are attracted together in the air, they form a heavier clump, which will eventually settle out of the air.
The increase in the incidence of respiratory-related conditions such as SARS, flu and the like makes air ionizers efficient in preventing them because the causative microorganisms that cause these diseases may actually travel indoors. Air ionizers are efficient in purifying the air to make your home less exposed to air contaminants.