What is Aqueous Ammonia?
Aqueous ammonia, also known as ammonia solution or ammonium hydroxide, is a clear, colourless liquid composed of ammonia dissolved in water. It has a strong, pungent odour and is commonly used across various industries due to its versatility and effectiveness as a chemical reagent.
Industrial Applications
Aqueous ammonia is widely used in industrial processes, particularly in water treatment, agriculture, and chemical manufacturing. In water treatment, it helps neutralise acidic waste streams and is often combined with chlorine to form chloramines, which act as a disinfectant in municipal water supplies.
Agricultural Uses
In agriculture, aqueous ammonia is used as a nitrogen source in fertilisers. It provides essential nutrients to crops, supporting healthy growth and increased yields. Its ability to adjust soil pH also makes it beneficial in certain farming applications.
Chemical Processing
Many industries use aqueous ammonia as a raw material in the production of chemicals such as ammonium compounds, plastics, and dyes. It also plays a role in the manufacture of pharmaceuticals and cleaning products due to its alkaline properties and ability to dissolve grease and organic matter.
Environmental Benefits
Aqueous ammonia is a preferred choice in flue gas treatment to reduce nitrogen oxide (NOx) emissions from industrial plants. It is used in selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) systems, helping to lower air pollution.
Safety Considerations
Despite its many benefits, aqueous ammonia should be handled with care. It is corrosive and can cause irritation to the skin, eyes, and respiratory system. Proper storage and handling procedures are essential to ensure safety in industrial and commercial settings.
From water treatment to agriculture and environmental applications, aqueous ammonia remains an important chemical with widespread use across multiple sectors.
