Progress in Filtration and Separation

4. Comparison of Electrically Assisted Separation Processes

Table 11 shows the advantages and disadvantages of the reviewed electrically assisted separations.

Table 11

Advantage/drawbacks of the electrically assisted filters and separators

Assisted separation process	Advantages	Drawbacks
Dead end electrofiltration (electrofiltration and electroosmotic dewatering)	• Good alternative to accelerate the dewatering when it is observed that dead end filtration and consolidation rates are too slow and when particles present high surface charge (|ζ| > 15–20 mV). • Efficient for compressible or gelatinous material. • Efficient for all feed concentrations. • Efficiency depends mainly on the surface electrical charge of the particles. • Typical increase of filtration ...