抄録
The distributions of copper, zinc, lead, iron, aluminum, manganese and molybdenum in the deposits and the mother liquor due to concentration of sea water were studied. Concentrations were carried out under the following conditions:-
Concentration degrees:
3/10 (a range of deposition of carbonates and hydroxides), 1/10 (a range of deposition of gypsum) and 1/60 (a range of deposition of sodium chloride) of the volume of original sea water.
Temperature: 40&C and boiling temperature.
pH of sea water: 5.0, 7.9 and 10.0.
Analysis of each element was made on the deposits and the final mother liquor and the following results were obtained:-
1. There are no serious differences in the distribution of these metals by temperatures, but there are fair differerences by pH of sea water.
2. The behaviors of copper and zinc resemble each other, and the greater part of these metals are concentrated in the mother liquor.
3. The lead is distributed partly in the carbonate or hydroxide deposits, and more in the sodium chloride crystals.
4. The behaviors of aluminum and iron resemble each other, and the greater part of these metals are distributed in the early stage deposits.
5. A part of manganese is distributed in the sodium chloride deposit, but there is no definite tendency as to the remainder.
6. The molybdenum is not distributed in the deposits, and is almost all concentrated in the mother liquor regardless to the temperature or pH of sea water.
