| 摘要 |
PROBLEM TO BE SOLVED: To elute a concd. mineral into water by arranging an eluate contg. a mineral in an electrolytic cell having an anode and a cathode, storing water in the cell or allowing water to flow in the cell and impressing a DC voltage between the electrodes. SOLUTION: A mineral eluate 4 of coral sand contg. calcium and magnesium is arranged at the bottom in an electrolytic cell 1, water 5 is stored in the cell 1, a DC voltage 6 is impressed between an anode 2 and a cathode 3, hence the current flows toward the cathode 3 from the anode 2, and the electron flows to the anode 2 from the cathode 3. The electron is taken by the anode 2 to generate oxygen and hydrogen ion (4H2 O→4H<+> +2O2 +4e<-> ) in the vicinity of the anode 2, and the water 5 is acidified around the anode 2. The generated hydrogen ion reacts with the calcium caronate in the eluate 4 (CaCO3 +2 H<+> →Ca<2+> +H2 O+CO2 ), and the mineral component such as calcium is dissolved in the cell 1. |
