What is the effect of a shortage of brine on the pH value of nanofiltration membranes? How great is the impact?
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What is the effect of a shortage of brine on the pH value of nanofiltration membranes? How great is the impact? What is most affected by the nanofiltration membrane?
It has an impact, because most membranes are alkaline membranes
The pH value of saline is one of the most significant factors affecting nanofiltration membranes. The degree of influence depends on the material of the nanofiltration membrane and its own structure, such as pore size, pore dimensions, thickness, and surface roughness. Generally, nanofiltration membranes are more sensitive to low pH values, while they remain more stable under high pH values and neutral conditions.
To prevent hydrolytic erosion of the membrane material, the pH value of the feed brine must be accurately and reliably maintained within a specified range, with an optimal pH of 4–5.