The research on flocculation of Microcystis aeruginosa with combination of microbial flocculant and alum

摘要

Microalgae harvesting was a bottleneck for controlling eutrophic waterbody and microalgal biofuel production, the combination of Microbial floculant (MBF) and alum was used to flocculate Microcystis aeruginosa in different conditions. The results showed that the combination of MBF and alum had a better flocculation on algae than that with the combination of MBF and other aluminum salts; the alum could aggregated algal cells to form small flocs by charge neutralization and MBF could link algal flocs together via netting and bridging action; the algal floe floated on the surface of solution which made it is easy to harvest.