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Membrane and Desalination Technologies - TCE Moodle Website

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244 L.K. Wang et al.<br />

FEED<br />

End Cap Housing <strong>Membrane</strong> Tubes End Cap<br />

FEED<br />

Permeate<br />

<strong>Membrane</strong> Perforated Rigid<br />

Outer Tube<br />

RETENTATE<br />

Fig. 6.4. Schematic of tubular membrane module.<br />

Fig. 6.5. Schematic of hollow fiber membrane module.<br />

RETENTATE<br />

though the tubular membrane modules have the lowest packing densities <strong>and</strong> highest energy<br />

consumption among all modules (19). The tubular designs with ceramic inorganic membranes<br />

are frequently used in the food processing industries.<br />

The hollow-fiber membrane modules (Fig. 6.5) have extremely high packing density<br />

(surface area to volume ratios) <strong>and</strong> comparatively low energy consumption, <strong>and</strong> are suitable

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