> With current membrane technology, yes. Equation 12 is the energy you need to counteract the effect of the entropy of the ions in solution and separate the in

> With current membrane technology, yes. Equation 12 is the energy you need to counteract the effect of the entropy of the ions in solution and separate the initial solution into one that does not have the ions. It’s pretty much a thermodynamic limit and does not depend on process or technology. They explicitly assume that they have a perfect membrane when they introduce the equation. The floor will never be zero, it is a physical limit.