Ozone is clearly preferred desinfectant than chlorine, abut it suffers from the problem that its effect is momentary and passing, and it has tobe generated in situ. If there was a cheap and efficient way of generating ozone, that would be marketable. Clarizon and its partners (the Universities of Hong Kong and Newcastle, UK) have demonstrated a unique, patented electrolytic cell for generating ozone with high efficiencies. This relies on a combination of materials deposited in a nanoscale structure.The ozone concentration in the generated gas ranges from 20% to over 35%, in comparison with a typical range from 2% to 12% for conventional, cold corona discharge.The energy efficiency of the electrolytic generation process is at least as efficient as the cold corona discharge process. However, the (conventional) cold corona discharge process suffers from a number of disadvantages:
It is temperature dependent. Typical systems require large quantities of cooling water at 15 °C to achieve their efficiency. If this water has to be cooled from, say, 20 °C then this requires at least as much energy again as for the ozone generation itself.
It requires the input gas (air or oxygen) to be very dry and cold. Again, achieving this requires an energy overhead.
Clarizon’s electrolytic cell suffers from none of these disadvantages. Its overall electricity consumption can be as low as half of cold corona discharge systems, although the exact saving depends on the ambient temperature and whether oxygen is used as input to the cold corona discharge system.