Algae is harvested using different methods depending on whether it is microalgae or macroalgae. Microalgae, which are microscopic and suspended in water, are typically harvested by filtration, centrifugation, or flocculation, where algae cells clump together and are separated from the water. Filtration works best for larger species, while centrifugation is more effective for smaller cells.
Macroalgae, which are larger and grow attached to ropes or other structures, are usually harvested by hand or with mechanical equipment that cuts and collects the seaweed. After harvesting, algae are often rinsed to remove debris or unwanted material before processing. Proper timing of the harvest helps ensure maximum biomass and nutrient content.
