Lost credit card <a href=" http://isaactelevision.tv/index.php/buy-generic-abilify-online.pdf#spread ">cheap alternative to abilify</a> To get the water out of the CO2, the scientists set up a tanks filled with water. On one side of the tank, they put a membrane that allows positively charged ions to pass through and on the other side, they put a membrane that allows only negatively charged ions to pass through. Beyond the membrane is an electrode. When the carbon dioxide is pumped through the water it separates into positive hydrogen ions and negatively charge bicarbonate. Since the membranes only allow one kind of ion through, a net flow of electrons — or current — move from one side to the other.