Which liquid membrane separation technology can be used to treat phenol-containing wastewater? What is the separation mechanism?
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Which liquid membrane separation technology can be used to treat phenol-containing wastewater? What is the separation mechanism?
A liquid film mimics the structure of a biofilm and is usually composed of a membrane solvent, surfactants, and a flow carrier. It utilizes the principle of selective permeability, with the chemical concentration difference of solutes on both sides of the membrane serving as the driving force for mass transfer, thereby concentrating the solute to be separated within the membrane phase and achieving the separation of the desired substances.
This post was last edited by zhaolijun on 2016-1-15 at 11:11. Liquid film simulations of biofilm structures usually consist of membrane solvent, surfactants, and flow carriers. It utilizes the principle of selective permeability, with the chemical concentration difference of solutes on both sides of the membrane serving as the driving force for mass transfer, thereby concentrating the solute to be separated within the membrane phase and achieving the separation of the desired substances.
The liquid film method can be used for the treatment of phenol-containing wastewater. The mechanism involves the addition of sodium hydroxide to the inner aqueous phase; phenol can then pass through the oil film by dissolving, penetrate into the inner phase of the membrane, and form sodium phenolate. Sodium phenolate cannot dissolve in the oil film and thus cannot return to the outer aqueous phase. Therefore, as long as the external aqueous phase contains phenol, it can continuously enter the internal aqueous phase through the oil film. After demulsification of the membrane phase and the internal aqueous phase mixture, the membrane phase can be reused, while phenol can be recovered from the treated internal aqueous phase.
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This post was last edited by CoCo070563 on 2016-2-18 at 12:41. We have ready-made processes available; please contact us via private message.