osmosis water purification

Reverse Osmosis and Water Purification - The osmosis process can actually be reversed if a pressure larger than the osmotic pressure be applied to the solution. This phenomenon has found uses in water purification, especially the desalinat..

The osmosis process can actually be reversed if a pressure larger than the osmotic pressure be applied to the solution. This phenomenon has found uses in water purification, especially the desalination of sea water. An apparatus for this process is shown in t..

It is a physical process in which the solvent (water) moves from the region of its higher concentration to the region of its lower concentration across a semi-permeable membrane. This is to say that water moves from a dilute to a concentrated solution. Water is absorbe..

To ensure that the water that is supplied to the home is totally safe for the purpose of drinking, the following methods of purification should be adopted. i) Boiling ii) Storage iii) Filtration iv) Disinfecti..

A thistle funnel, covered at the broad end by a differentially permeable membrane, contains a 10% sugar solution. The beaker contains a 5% sugar solution as shown in fig. a. The solute is unable to pass through the membrane, but the water passes freely through in both directions. The net..

Impure sulphur is heated in an iron retort. The sulphur vapors formed at 444 o C are allowed to escape in a large brick chamber. The vapors condense and form 'flowers of sulphur' on the walls of the chamber. After sometime when the temperature of the chamber rises up to 120 o C..

- This unit is an assembly of various parts like, a) Dust precipitator, which removes dust from the gases. b) Scrubber, which removes soluble impurities. c) Drying tower, which removes moisture from the gases. d) Arsenic purifier, which removes impurities of As 2 O 3 etc. The..

Osmosis in a cell can be demonstrated by a potato osmoscope experiment. Peel the skin of a potato and remove the inner contents to form a cup shaped hollow. Place the potato in a container with water. Pour 5% sugar solution in to the potato cup up to a particular level. Pierce ..

Bauxite contains two main impurities Fe 2 O 3 and SiO 2 . These impurities must be removed in order to get good quality aluminum. These impurities make the aluminum brittle and liable to corrosion. Depending upon the nature of impurity present in bauxite, a..

Purification of Colloidal Sols - The colloidal solutions prepared by various methods usually contain electrolytes and other soluble substances as impurities. These impurities if not removed can destabilize the sols. Impurities are removed by the following methods: 1) Dialysis 2)..