The main practical applications of electrolysis are: 1. Extraction of Metals 2. Refining of Metals 3. Production of Chemicals 4. Electroplating 5. Electro-Typing 6. Electro-Forming 7. Electro-Cleaning. Application # 1. Extraction of Metals: There are two methods of extraction of metal on the basis of physical states of the ore. In the first method the ore is treated with a [...]
Power supply required for electrolytic process is low voltage DC supply. For electro-deposition a power supply of 10 to 12 volts which can give 100 to 200 amperes is adequate. Using a suitable conversion such a supply can be obtained from ordinary 220 volts AC supply system. The conversion from AC to DC can be done by following methods: (I) [...]
The principles of electrolysis are used in the manufacture of chemicals, like caustic soda (NaOH), chlorine gas, aluminium sulphate, potassium permanganate, hydrogen and oxygen on large scale. The production of caustic soda when a solution of sodium chloride is electrolysed is obtained by following reaction: The negative chloride (CI) moves towards the anode where they give up the negative charge [...]