Harvesting Nannochloris oculata by inorganic electrolyte flocculation: Effect of initial cell density, ionic strength, coagulant dosage, and media pH

► Effect of cell concentration, pH, AlCl3, and NaCl on recovery efficiency. ► A low buffering-capacity media is a good alternative to mitigate acidification cost. ► Sedimentation rate is affected by coagulant dosage probably due to hindered settling. ► Ionic strength does not affect flocculation efficiency of N. oculata.