| Title |
Optimization for Microalgae Harvesting Using Mg-Sericite Flocculant |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.3.328 |
| Keywords |
Biomass; Clay; Flocculation; Harvesting; Microalgae; Mg-Sericite |
| Abstract |
In this study, Mg-Sericite was used as a flocculant to harvest freshwater microalgae, Chlorella. vulgaris. Mg-Sericite separated successfully >95% of the C. vulgaris at the following optimal parameters: Mg/Si mol ratio 1.25 to 1.50, mixing time of 20 min and settling time of 20 min. The harvesting efficiency was pH dependent. The highest harvesting efficiency (99±0.3%) was obtained at Mg/Si mol ratio 1.5 and pH 9 to 11. These results indicated that a biopolymer, Mg-Sericite, can be a promising flocculant due to its high efficiency, low dose requirements, short mixing and settling times. This harvesting method is helpful to lower the production cost of algae for biodiesel. |