People use air purifiers to maintain indoor air quality because the air inside the homes is as polluted as outdoor air in most industrialised cities. The indoor air contains pollutants that are harmful to the respiratory system and causes sneezing, coughing, allergies, and asthma in the long run. Many people stay indoors for most of the day and face the risk of air pollutants in their homes. Air filters like the HEPA air purifier remove the air pollutants and safeguard people's health. Children, the elderly, and chronically ill people benefit the most from indoor air filters.
Types of air purifiers
Ultraviolet air purifiers
Ultraviolet air purifiers use short wave ultraviolet light to eliminate harmful viruses, bacteria and other pathogens from the air. The air crosses the UV lamps when forced through the filter during the purification process, and the UV light disinfects the air utilising germicidal irradiation. In most places, ultraviolet air purifiers are not used as a standalone units because they can not trap the particles in the air. They are used in HEPA air filtration systems. They are sold as free-standing devices or systems installed into pre-existing HVAC units.
HEPA air purifiers
HEPA air purifiers have a high-efficiency particulate absorbing air filter which removes 99.97% of particles in the air. They effectively remove particles like pollen, dust, mould and dander from the air. HEPA filters cannot trap microorganisms smaller than 0.2 microns like bacteria, germs and viruses. It has interlaced fibres that are turned and twisted in myriad directions to create a maze. Contaminants like dust, mould and pollen collide with the fibre in the maze while passing through the filter and get stuck to it. Sieving, interception and diffusion are the other methods in which the filter captures the pollutants in the air. The HEPA air purifier is commonly used in homes, restaurants, cars and aeroplanes.
Activated carbon air purifiers
The activated carbon air purifiers remove the smoke, odour, fumes and gases from the indoor air. It is used by people who are sensitive to the smell of smoke, natural gas and other odours. The filter is designed to filter the air through a bed of activated carbon, which removes volatile organic compounds, odours and gases. Activated carbon is in fact a form of carbon that is processed to make it better in trapping gas molecules. Sometimes, the activated carbon is treated with a chemical to enhance its ability to filter certain pollutants. Most activated carbon air purifiers include HEPA filters to remove particles from the air.
Ionic air purifiers
The ionic air purifiers emit negative ions into the air to purify it. The negative ions bond with positively charged particles like dust and make them so heavy that they cannot actually float in the air and fall out of the air. Some have electrostatic precipitation that traps positively charged particles to a metal plate inside the purifier. Ionic air purifiers purify the air of bacteria, dust, cigarette smoke, mould, pollen, soot and household odours and help people suffering from asthma and seasonal allergies. It is an energy-efficient and cost-effective purifier for domestic and commercial use.
Electronic air cleaners
An electronic air purifier uses an electric charge to remove pollutants from the air. The contaminants are trapped on the grids that are similar to filters. The cleaner draws air through the ionisation section, and the dust particles get electrically charged. The grids have the opposite charge, and they attract the particles. The particles are weighed down, settled on the grid and cleaned later. It is an effective and economical air purifier that is great for people struggling with sensitivity to airborne viruses, bacteria and moulds.
Air purifiers work hard to remove potential pollutants from the home environment. Using an air purifier is actually the best way to purify the air inside the house and keep people healthy and safe.
Author Bio: Hannah Gilbert is a freelance writer who offers ghostwriting, copywriting, and blogging services. She works closely with B2C and B2B businesses providing digital marketing content that gains social media attention and increases their search engine visibility.
