The electrolytic coagulation (EC) process has recently been adapted by wastewater treatment plants for final polishing and removal of algae from partly treated waste­water. Active polyvalent metal anodes (usually iron or aluminum) are used to gener­ate ionic flocculants such as Al3+ and Fe3+ ions. The latter agglomerate algae to form flocs due to the net negative charge and colloidal behavior of algal cells (Gao et al., 2010). The entire coagulation process involves the formation of coagulants by dissolution of the reactive anode, destabilization of colloidal suspensions, and aggregation of destabilized suspensions, resulting in the formation of algal flocs. The EC process is a more efficient chemical flocculation technique compared to conventional processes of direct interaction of the aluminum sulfate with algal suspensions (Aragon et al., 1992). The flocculated biomass is removed from water, either by sedimentation or flotation and skimming. For the latter to be effective, inactive metal cathodes are used to generate micro-gas (mainly hydrogen) bubbles that get entrapped in algae flocs and float them to the surface. Complete biomass removal from algal cultures having cell densities of 0.55 x 109 to 1.55 x 109 cells mL-1 has been reported using this process (Gao et al., 2010). However, the process may not be very effective for very dilute algal solutions because at low concentra­tions of total suspended solids (representing algal cells), the amount of colloids pres­ent in the culture solution may not be sufficient for significant amounts of settleable solids (Azarian et al., 2007).