Ferric sulfate coagulation and powdered activated carbon adsorption as simultaneous treatment to reuse the medium in Arthrospira platensis cultivation

摘要

BACKGROUNDCyanobacteriae and microalgae industries require large amounts of water for their cultivation. Reusing the Arthrospira platensis culture medium is scarcely evaluated in the literature. This work evaluates coagulation and adsorption as a simultaneous process to treat A. platensis spent medium by applying different concentrations of powdered activated carbon (PAC) and ferric sulfate (S) and by using different contact times (T) to remove organic matter and pigments.