This project attempts to deodorize liquid hog manure by using direct-current electrolysis which was tested in a 1800 L pilot plant that was constructed. The project wanted to limit the smell and intensity of the manure while not eliminating it. The electrochemical cell had anodes that were titanium metal coated with a thin layer of iridium dioxide and it had cathodes made of steel grids. Two different electrode configurations were look at over six experiments each lasting a week. The electrolysis were initiated after filling the pilot plant and allowing it to equilibrate for several days, and the experiments were concluded by allowing the electrolyzed manure to stand without further treatment for 1 week, to demonstrate that the odour did not come back. All experiments were successful at meeting the criteria of reducing the odour from an “offensive smell” to a “barn odour”, the odour did not come back after 7-10 days, and bacteria that causes the odour was found to be reduced. The objectives of the experiment were met and further testing will be carried out in a on farm setting.