?What is nitrate
Nitrate is a compound that is formed naturally when nitrogen combines with oxygen or ozone. Nitrogen is essential for all living things, but high levels of nitrate in drinking water can be dangerous to health, especially for infants and pregnant women. Nitrates are also made in large amounts by plants and animals, and are released in smoke and industrial or automotive exhaus
Nitrate is a polyatomic ion with the chemical formula NO3− . Salts containing this anion are called nitrates. Nitrates are common components of fertilizers and explosives. Almost all nitrates are soluble in water
Nitrate, also known as nitric acid ion or nitrate ion, belongs to the class of inorganic compounds known as non-metal nitrates. These are inorganic non-metallic compounds containing a nitrate as its largest oxyanion
How do I remove nitrate from my drinking water
Nitrate may be successfully removed from water using treatment processes such as ion exchange, distillation, and reverse osmosis
Heating or boiling your water will not remove nitrate. Because some of the water will evaporate during the boiling process, the nitrate levels of water can actually increase slightly in concentration if the water is boiled. Mechanical filters or chemical disinfection, such as chlorination, DO NOT remove nitrate from water.
Stress corrosion cracking (SCC) in nitrate solutions
Nitrates were first identified as cracking agents of intergranular failure of evaporation equipment containing NH4NO3 . Stress corrosion cracking of low and medium carbon steels has been observed in the fertilizer industry and in equipment used in the production of sodium nitrate. Calcium nitrate, ammonium nitrate and their mixtures are most corrosive. Low carbon steel cracks in a 60% sodium nitrate solution, but the time to failure is much longer
The susceptibility of steel to stress corrosion cracking in nitrate solutions is influenced by the concentration and temperature . Increased nitrate concentrations reduce SCC failure times and threshold stress levels. An increase in temperature decreases the time to failure, presumably due to increased crack growth rates . A typical Arrhenius behaviour is exhibited. However, SCC can occur at quite low nitrate concentrations in boiling solutions, and an increase in concentration above a certain level does not affect SCC susceptibility in such solutions . On the other hand, initiation and slow crack growth can occur over a wide temperature range given sufficient time
The laboratories of Abrizan Industrial Research Company located in Fars Science and Technology Park are able to measure a variety of water parameters, including nitrate, using advanced devices and equipment
