Reich
Reich : (1) A process for purifying carbon dioxide obtained by fermentation. It is first scrubbed by aqueous ethanol, then by aqueous potassium dichromate to oxidize organic compounds, and finally with concentrated sulfuric acid to dry it. (2) A complex process for recovering potassium from sugar processing residues. Thorpe's Dictionary of Applied Chemistry, 4th ed., Longmans, Green & Co., London, 1950, 10, 139