Coalescence of bubbles in aqueous solutions of electrolytes
Conference
·
OSTI ID:276669
- Inst. for Surface Chemistry, Stockholm (Sweden). Thin Films Group
Salt water has been known to float coal (without use of collector or frother) for over 50 years. The contrasting behavior of electrolytes in inhibiting coalescence of bubbles was explained by the positive and negative distribution of anions and cations at the gas/water interface. Further, the efficiency of electrolytes which do inhibit coalescence of gas bubbles can be linked to a counter ion hydration mechanism and the effect of electrolyte concentration on gas solubility. A correlation was found between the transition concentration of electrolyte needed to prevent the coalescence of bubbles and the reduction in gas solubility. Hence, the inhibition of bubble coalescence in electrolyte solutions appears to be linked with the utilization of water molecules in the hydration of cations and a consequent reduction of water available for gas solubility.
- OSTI ID:
- 276669
- Report Number(s):
- CONF-9510120--; ISBN 0-87335-141-X
- Country of Publication:
- United States
- Language:
- English
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