By Microporous Oxides Science & Technology, LLC
We offer advanced water treatment through Capacitive Deionization or with Electrically Enhanced PCO. In either case, MOST nanoparticle materials bring you effective solutions for Water Purification. We talk about photocatalytic oxidation on our PCO page where we focus on applications involving treatment of contaminated air. This focus occurs because oxygen gas is an important reactant in PCO. Since air contains 20% oxygen, there is an excess of oxygen available for PCO when used to break down contaminants in air. The use of PCO for treating contaminants in water was not discussed because of a lack of dissolved oxygen in water, as under the best conditions the amount of oxygen present in water is only about 0.003% unless additional oxygen is fed into the PCO reactor. Therefore, PCO reactions in water typically occur at a slow rate. In spite of this drawback, several companies offer water treatment systems based on PCO. One method to increase the rate of PCO reactions in water is to electrically enhance the process by applying a voltage across two electrodes coated with a PCO catalyst. The applied voltage minimizes electron-hole recombination within the catalyst, allowing more of these reactive species to reach the catalyst surface and react with contaminants. This enhanced reactivity comes at the cost of complicating the design of the reactor. For more information about electrically enhanced PCO, consult with the expertise at Exciton Clean LLC (excitonclean.com).
