WATER TREATMENT Superior water treatment with the naturally absorbent and non-toxic mineral zeolite.
Water treatment refers to the removal of impurities (microorganisms, suspended solids or dissolved substances) from drinking water, industrial wastewater, hot tubs, and the like. Granular materials such as sand have often been used to filter out impurities. However, research indicates that highly pure zeolite is superior to conventional granular media in terms of natural filtration and absorbent abilities in aqueous environments. Currently, several technologies that control water pollution are available: coagulation, foam flotation, filtration, ion exchange, aerobic and anaerobic treatment, solvent extraction, electrolysis, microbial reduction, and activated sludge (Bhatnagar & Sillanpaa, 2010).
Most of these methods, however, involve substantial financial costs which can prevent their application to pollution control.Among all available water treatment technologies, adsorption is considered the best option because of convenience, ease of operation, and simplicity of design (Bhatnagar & Sillanpaa, 2010). Zeolite is a mineral that has been noted by scientists because of its unique adsorption properties; it adsorbs a variety of heavy metals and ammonia, which allows it to remove a wide range of pollutants. Lab data indicates that zeolite outperforms conventional filtration media, including sand and anthracite, in its filtration and absorption capabilities. This is attributed to zeolite’s surface area, which is seven or eight times larger than many other granular materials. For instance, an ounce of pool sand has a surface area of 1,000 feet per cubic foot, whereas the same amount of zeolite has a surface area of 9,700,000 feet per cubic foot.
Ammonia (NH3) and heavy metal cations are often found in water sources and pose serious health and environmental risks. Studies have determined that natural clinoptilolite zeolite is selective for these cations, meaning that it will absorb and bind them in its honeycomb structure even in the presence of larger amounts of competing cations. In addition, zeolite as a molecular sieve forms strong bonds with ammonia and heavy metals that are difficult to break. This prevents leaching of contaminants into the environment. (Mumpton, 1985)