Removal of ammonium and phosphorus ions from synthetic wastewater by the microalgae Chlorella vulgaris coimmobilized in alginate beads with the microalgae growth-promoting bacterium Azospirillum brasilense
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Abstract
Coimmobilization of the freshwater microalga Chlorella vulgaris in alginate beads
with the microalgae growth-promoting bacterium Azospirillum brasilense under semi-continuous
synthetic wastewater culture conditions significantly increased the removal of ammonium
and soluble phosphorus ions compared to immobilization of the microalgae alone. In
continuous or batch cultures removal of these ions followed a similar trend but was
less efficient than in semi-continuous culture. It is proposed that coimmobilization
of a microalgae with microalgae growth-promoting bacteria can serve as a tool in devising
novel wastewater treatments.