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Water purification combines a number of methods to produce potable or drinking water. Downstream processing refers to purification of chemicals, pharmaceuticals and food ingredients produced by fermentation or synthesized by plant and animal tissues, for example antibiotics, citric acid, vitamin E, and insulin.
An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
For buildings with a forced-air furnace, a humidifier may be installed into the furnace. They can also protect wooden objects, antiques and other furnishings which may be sensitive to damage from overly dry air. In colder months, they may provide modest energy savings, since as humidity increases, occupants may feel warm at a lower temperature.
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An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules. Negative ions, or anions , are particles with one or more extra electrons , conferring a net negative charge to the particle.
Humidifiers either use warm mist or cool mist to add moisture to the air—each with pros and cons. “A humidifier can help if there’s dryness in the air and that dryness is a trigger.
You can also use these humidifiers with medicinal inhalants for cough or cold relief. Ultrasonic: These popular humidifiers use high-frequency vibration with quiet fans to produce a fine mist.
This differs from humidified gas, where water vapor is a minor component of the gas mixture. Ideally, steam is composed only of H 2 O molecules. However, steam may also contain other molecules such as metals, urea, volatiles, chlorine, particles, microdroplets, and organics in reality. To be considered ultra high purity, steam must not have ...