The Comparison Study of Four Lab Scale Microalgae Collection Ways

Abstract

Microalgae are a form of prospective biomass energy. Cultivation of wild mixed microalgae not only develop a new way for biomass energy production, but reduce the emission of carbon dioxide in flue gas, which is important to the alleviation of global climate change. The production of bio-flues using microalgae included microalgae cultivation, harvesting and product post-treatment. The cost-effective microalgae harvesting ways was beneficial for all the production process. This study was carried out on the basis of microalgae cultivation. The microalgae collection ways including centrifuge, filtration by slow filter paper, 13# and 25# plankton net were compared, the results showed that, the algae cell collection efficiency decreased as follows, centrifuge > filtration by slow filter paper >25# plankton net>13# plankton net. For the same collection way, the collection efficiency had a little difference according to different microalgae species. The most suitable collection way was centrifuge for the microalgae cultivation in lab.