Acetone, butanol, and ethanol production from wastewater algae

► Acetone, butanol, and ethanol (ABE) can be produced from algae biomass. ► Clostridium saccharoperbutylacetonicum can produce ABE using wastewater algae. ► Acid/base pretreatment of the algae feedstock increases ABE yields. ► Supplementation of sugar or enzymes to pretreated algae increases ABE yields. ► ABE production from wastewater algae is not described in the refereed literature.