Question

How does Siemen"s ozonizer convert oxygen to ozone?

Answer 1

Ozoniser:

When a silent electric discharge is transmitted over pure, cold, and dry dioxygen in a properly built instrument known as an ozoniser, ozone is produced. Siemen's ozoniser and Brodie's ozoniser are the different varieties.

It is made up of two coaxial glass tubes that have been fused together. The inner side of the inner tube and the outer side of the outer tube are both coated with tin foil. The terminals of an induction coil, which produces high-voltage current, are connected to the inner and outer tin coatings. The annular gap is filled with a slow circulation of pure, dry oxygen. When oxygen is exposed to a quiet electrical discharge, ozonised oxygen with 10-15% ozone is produced. The output of ozone in ozonised oxygen can be boosted by taking the following precautions:

• It is recommended that only pure and dry oxygen be used.
• The ozoniser must be completely dry.
• A fairly low temperature (around $0^{\mathrm{o}}\mathrm{C}$) should be maintained
• There must not be any sparks.

This ozoniser works in the same way as the Siemen's ozoniser, but instead of tin foil, it uses weak sulfuric acid. An induction coil is connected to two carbon electrodes that have been immersed in acid. The space between the tubes is filled with a dry oxygen current. Ozonised oxygen containing about 5% ${\mathrm{O}}_3$ comes out at the other end. The quantity of ozone produced may increase by 20-25 percent if the device is maintained cool.