What are chelating agents in Water Softening plants?
A chelating agent is a compound that reacts with metal ions to form a stable water-soluble metal complex. This drug alters the chemical composition of the metal, improving the general stability of the metal and its potential for binding to other substances. The chelating agent is used in several applications, including:
Medical Scale removal Water supply Corrosion prevention
Chelating agents are also known as sequestrants. The chelating agent molecules form multiple bonds with the metal ions, preventing the metal from reacting normally. Bonding to metal ions reorganizes the core structure and chemical composition of the ion. The chemical structure of many metals is very similar to chains. Chelating agents connect the ends of these chain-like structures to stable rings that can easily move through different environments.
Chelating agents are natural or synthetic organic compounds used in industrial, medicinal, and biological applications. They aid the digestive process of both humans and animals and transport plant nutrients. Surfactants are used as corrosion inhibitors to form insoluble surface chelates (compounds containing chelating agents and metal ions).
Chelating agents can be used to prevent corrosion, the formation of soluble chelates can stimulate the corrosion process. Uncontrolled use of the drug can lead to chelate corrosion. This can be prevented by applying the exact amount that leaves no residue on the kettle.
The improvement in the stability of chelated complexes such as [M (EDTA] 2) compared to aqua complexes such as [M (H2O) 6] 2+ is called the chelating effect.
Such ligands are more tenacious than monodentate ligands (such as water) because chelating agents bind to metals through multiple coordination sites. Replacing the chelate with multiple monodentate ligands (such as water or ammonia) reduces the total number of molecules and replacing multiple monodentate ligands with chelate increases the number of free molecules. Therefore, the effect is entropy, as more sites are used by fewer ligands, which leaves more unbound molecules.
Chelating agents are used for the following purposes:
-Scale removal and prevention
-Decomposition, separation, or transfer of heavy metal ions
-Inactivation of metal ions to prevent clogging, scaling and precipitation
-Limitation of available metal ion concentrations
-Controls heavy metal poisoning and reduces the toxic effects of metals
-Corrosion inhibitor that forms an insoluble surface chelate
Chelating agents are used as water softeners for chemical analysis and are part of many commercial products such as shampoos and food preservatives. A commonly used synthetic chelating agent is EDTA. This term is used to describe boiler water treatment systems in water treatment programs, especially steam technology.
The chelating agent is used in boiler to dissolve common types of scale during normal operation and provide effective online and offline scale removal within the boiler.
The term chelate was first used in 1920 by Sir Gilbert T. Morgan and HDK Drew. They described chelate as: A group that functions as two bonding units and bonds to a central atom to form a heterocycle.
Virtually all biochemical actionscan dissolve metal cations. Therefore, proteins, and polysaccharides are excellent polydentate ligands for many metal ions. In addition to these random chelating agents, some are made to specifically bind certain metals. Such chelating agents include the porphyrin ring of haemoglobin or chlorophyll, and the Fe3 + chelated siderophore secreted by microorganisms. Histidine, malic acid, and Phyto keratin are typical chelating agents used by plants to avoid free toxic metal ions. Many microbial species produce water-soluble dyes that fluoresce under UV light. These pigments act as a chelating agent called siderophore.