Harvesting of microalgae species using Mg-sericite flocculant

Bioprocess and Biosystems Engineering
Seung-Mok Lee, Hee-Jeong Choi

Abstract

In this study, Mg-sericite was used as a flocculant to harvest freshwater microalgae Chlorella vulgaris. Mg-sericite separated successfully >99% of the C. vulgaris at the following optimal parameters: sericite and MgCl2 ratio (S/M ratio) of 45 to 15, mixing time of 5 min, mixing rate 100 to 150 rpm and settling time of 5 min. The harvesting efficiency was pH dependent. The highest harvesting efficiency (99 ± 0.3%) was obtained at S/M ratio 40 and pH 9-11. These results indicated that a biopolymer, Mg-sericite, can be a promising flocculant due to its high efficiency, low-dose requirements, and short mixing and settling times. In addition, Mg-sericite does not contaminate the growth medium, which can be recycled to reduce not only the cost and the demand for water, but also the extra operational costs for reusing the growth medium. This harvesting method is helpful to lower the production cost of algae for biodiesel.

References

Mar 14, 2007·Biotechnology Advances·Yusuf Chisti
Jul 9, 2010·Bioresource Technology·Anoop SinghJerry D Murphy
Apr 26, 2011·Journal of Hazardous Materials·Young-Chul LeeJi-Won Yang
Oct 1, 2011·Journal of Applied Phycology·Sina SalimRené H Wijffels
Jun 19, 2012·Bioresource Technology·M R GranadosE Molina Grima
Dec 25, 2012·Bioresource Technology·Yanan XuFrank Baganz
Feb 21, 2013·Bioresource Technology·Young-Chul LeeYou-Kwan Oh

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