If the DI water was first bubbled with nitrogen to remove oxygen, and alginate was dissolved in water with stirring during 12 hours, is it possible any oxygen would be dissolved in the alginate solution?
The solubility of oxygen is depends on the temperature of both water and air. The duration of aeration and rate of oxygen solubility are depends upon the diffuser type.
The solubility of oxygen is depends on the temperature of both water and air. The duration of aeration and rate of oxygen solubility are depends upon the diffuser type.
The solubility of oxygen is depends on the temperature of both water and air. The duration of aeration and rate of oxygen solubility are depends upon the diffuser type.
So in the thick solution, the oxygen is hard to be dissolved? Is this right?
Dear Wang,
What do you mean thick solution? is it high viscosity or high density ?
What are you doing? Dissolve oxygen in alginate solution or dissolve alginate in oxygen free water? Note: nitrogen is in general not a perfect way to remove oxygen (nitrogen not pure; leaks; takes a long time (theoretically infinite to remove all oxygen); alginate may contain oxygen. If possible use sulfite to consume all oxygen. The solubility of oxygen in alginate solution is not equal to that in water. But you can measure it. The oxygen transfer rate with a bubbling system may be considerable lower, but that only results in a longer required aeration time.
Welcome back.
If the idea is to remove oxygen from the water into which alginate is to be dissolved and to keep it oxygen free, then it is only a matter of interfacial contact with any phase containing oxygen. The contact area A and the mass transfer coefficient kL are important. KL will be less in a viscous liquid above 20 mPas. 12 hours is a long time, and when there is any contact, then oxygen is expected to be dissolved.
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