Cr(VI) removal by Scenedesmus incrassatulus was characterized in a continuous culture system using a split-cylinder internal-loop airlift photobioreactor fed continuously with a synthetic effluent containing 1.0 mg Cr(VI) l~(-1) at dilution rate (D) of 0.3 d~(-1). At steady state, there was a small increase (6%) on the dry biomass (DB) concentration of Cr(VI)-treated cultures compared with the control culture. 1.0 mg Cr(VI) l~(-1) reduced the photosynthetic pigments content and altered the cellular morphology, the gain in dry weight was not affected.
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