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Water structure and its influence on the flotation of carbonate and bicarbonate salts
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|Title: ||Water structure and its influence on the flotation of carbonate and bicarbonate salts|
|Authors: ||Ozdemir, O.|
Çelik, M. S.
Nickolov, Z. S.
Miller, J. D.
|Keywords: ||Interfacial Water Structure|
Water Structure Makers And Breakers
Carbonate And Bicarbonate Salts
|Issue Date: ||2007 |
|Citation: ||Journal of Colloid and Interface Science, 314(2): pp. 545-551.|
|Abstract: ||Interfacial water structure is a most important parameter that influences the collector
adsorption of salt minerals such as borax, potash and trona. According to previous studies,
salts can be classified as water structure makers and water structure breakers. Water structure
making and breaking properties of salt minerals in their saturated brine solutions are essential
to explain their flotation behavior. In this work, water structure making-breaking studies in
solutions of carbonate and bicarbonate salts (Na2CO3, K2CO3, NaHCO3 and NH4HCO3) in 4
wt% D2O in H2O mixtures have been performed by FTIR analysis of the OD stretching band.
This method reveals a microscopic picture of the water structure making/breaking character
of the salts in terms of the hydrogen bonding between the water molecules in solution. The
results from the vibrational spectroscopic studies demonstrate that carbonate salts (Na2CO3
and K2CO3) act as strong structure makers, whereas bicarbonate salts (NaHCO3 and
NH4HCO3) act as weak structure makers. In addition, the changes in the OD band parameters
of carbonate and bicarbonate salt solutions are in agreement with the viscosity characteristics
of their solutions.|
|Appears in Collections:||Faculty Research and Publications (MSE)|
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