From April 2008 to April 2011
Project Leader(s): Prof Paul Christensen
Contact: Prof Paul Christensen
Sponsors: Clarizon Ltd
We have developed a breakthrough in electrochemical ozone generation that is simpler and more efficient than the current main alternative, cold corona discharge. The ozone concentration in the generated gas is typically in excess of 40% by volume.
A current is passed between two electrodes and one of which (the anode) is immersed in water. Ozone and oxygen are generated at this electrode's surface, which is coated with a patented catalyst. Water is normally generated at the other electrode, although hydrogen can be generated as an alternative.
Ozone is used in a wide range of applications, including municipal water treatment, bottled water treatment, food treatment, spa and swimming pool disinfection, bleaching and a number of industrial processes. It provides a safe and cost-effective alternative to chlorine and chlorine-based products, decomposing rapidly to oxygen and leaving no environmentally harmful or potentially carcinogenic by-products.
However, the application of ozone has been constrained by the limitations of currently available technologies for generating ozone. Our technology provides a breakthrough in cost and system simplicity that will allow ozone to be used more widely, helping to reduce pollution and reducing energy consumption.
For more info, see www.clarizon.co.uk
P. A. Christensen and W. F. Lin: Electrode, method of manufacture and use thereof. UK patent: 0612094.3, 2006.
Professor Paul Christensen