Table 4 Harvesting methods of microalgae biomass
Recovery methods | Microalgae species | Control conditions | Remarks | References |
|---|---|---|---|---|
Centrifugation | Synechococcus elongatus PCC 7942 | Speed, time | High efficiency, no pollution; high energy consumption | [58] |
Ultrafiltration | Cyanobacteria Syn7942, Syn6803, and Ana7120 | Aperture size, pressure | Large amount of processing, easy to enlarge; membrane life | [59] |
Electrocoagulation–flotation (ECF) | Spirulina (Arthrospira) platensis | Electrode type, current intensity | Low energy consumption, high efficiency; may cause pollution | [60] |
Compound buoyant-bead flotation | Spirulina (Arthrospira) platensis | Time, pH | High efficiency | [61] |
Flocculation | Spirulina (Arthrospira) platensis | Type of coagulants, amount added | High efficiency; may cause pollution | [62] |
Autoflocculating | Arthrospira platensis | Type of microalgae strains | No pollution | [63] |