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 processAdvantagesDrawbacks
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 ...

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