Process to obtain heavy waterDeuterium oxide, D2O; water containing two deuterium atoms i... utilizing the negative temperature dependence of the equilibrium constants of the reaction H2S + HDO <-> HDS + H2O. The hydrogen sulphide enriched with deuteriumHydrogen isotope with a nucleus containing a neutron and a p... at high temperature releases part of the deuteriumHydrogen isotope with a nucleus containing a neutron and a p... at low temperature to the water. In the countercurrent process between a hotA term used in nuclear technology for "highly active". and a cold column, deuteriumHydrogen isotope with a nucleus containing a neutron and a p... enrichmentProcess by which the share of a certain isotpe in an element... results between the columns.