The Chemistry in Desalination Plants Research Paper

The Chemistry in Desalination Plants - Research Paper Example As the discussion declares there are various processes which are involved in desalination of water. Through the process of distillation liquids are separated from one another due to their difference in boiling points. The instrument used in distillation is called a ‘still’ and it consists of a pot, condenser, and a receiver. The liquid is heated in the pot, the condenser condenses it and the receiver receives the separated liquids. There are three different processes of distillation; Multi-Stage Flash, Multiple-Effect and Vapor Compression. In all these three processes water is either heated or passed through steam tubes and separated. This study highlights that an additional method is the process of Electro dialysis in which salt ions are transported from one solution to another by passing them through an ion exchange membrane. Due to the electric charges possessed by the ions they pass through the electro membrane. The membrane has the skill to select or reject the ions and transport them hence it is utilized in separation or removal of electrolytes. Another commonly used method in water desalination is the process of reverse osmosis. In this process the solvent is transported from a high concentration solution to a low concentration solution through a membrane. The membrane acts as a filter in which the solute is trapped on one side and the pure solvent is obtained on the other side. This method is used is obtaining fresh water from sea water. The pressure is applied on the higher concentration solution. The outwardly applied pressure builds up and is greater than the concentration difference hence the net solve nt movement is from high concentration area to low concentration area. Finally as the solute cannot pass through as the membrane because is it not permeable to it, the solute and the solvent are separated.