Browse > Article
http://dx.doi.org/10.7841/ksbbj.2012.27.2.103

Optimization of Microalgae Harvesting Using Flocculation and Dissolved Air Floatation  

Kwon, Hyuck-Jin (Department of Chemical and Biomolecular Engineering, Sogang University)
Jung, Chang-Kyou (Department of Chemical and Biomolecular Engineering, Sogang University)
Kim, Nam-Hoon (Sehwa High School)
Lee, Jin-Won (Department of Chemical and Biomolecular Engineering, Sogang University)
Publication Information
KSBB Journal / v.27, no.2, 2012 , pp. 103-108 More about this Journal
Abstract
The harvesting of microalgae is a critical step that precedes biodiesel conversion. The most widely used harvesting technology is flocculation and floatation. In this study, the efficiency of the flocculants aluminum sulfate and poly aluminum chloride were evaluated for harvesting the alga Dunaliella tertiolecta in conjunction with dissolved air floatation. Using the jar test the optimum concentration range for aluminum sulfate was 1.0~1.5 g/L and for poly aluminium chloride, 1.5~2.0 g/L. The degree of coagulation was visualized by microscopy. Further analysis in combination with dissolved air floatation showed that the optimal concentration for aluminum sulfate was 1.1 g/L and for poly aluminum chloride, 1.6 g/L.
Keywords
Microalgae; Harvest; Dunaliella; Flocculation; Floatation; Dissolved air Floatation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Tripathy, T. and B. R. De (2006) Flocculation: A new way to treat the waste water. J. Phys. Sci. 10: 93-127.
2 Grima, E. M., E. H. Belarbi, F. G. A. Fernandez, A. R. Medina, and Y. Chisti (2003) Recovery of microalgal biomass and metabolites: process options and economics. Biotechnol. Adv. 20: 491-515.   DOI
3 Dismukes, C. G., D. Carrieri, N. Bennette, G. M. Ananyev, and M. C. Posewitz (2008) Aquatic phototrophs: efficient alternatives to land-based crops for biofuels. Curr. Opin. Biotechnol. 19: 235-240.   DOI
4 Somasundaran, P. and T. Hubbard (2006) Encyclopedia of Surface and Colloid Science. 2nd ed., pp. 2588-2591. CRC Press, Taylor & Francis Group, NY, USA.
5 Uduman, N., Y. Qi, M. K. Danquah, G. M. Forde, and A. Hoadley (2010) Dewatering of microalgal cultures: a major bottleneck to algae-based fuels. J. Renew. Sustain. Energy 2: 012701.   DOI
6 Kurane, R. and H. Matsuyama (1994) Production of a bioflocculant by mixed culture. Biosci. Biotechnol. Biochem. 58: 1589-1594.   DOI   ScienceOn
7 Patil, S. V., C. D. Patil, B. K. Salunke, R. B. Salunkhe, G. A. Bathe, and D. M. Patil (2011) Studies on characterization of bioflocculant exopolysaccharide of Azotobacter indicus and its potential for wastewater treatment. Appl. Biochem. Biotechnol. 163: 463-472.   DOI
8 Salehizadeh, H. and S. A. Shojaosadati (2002) Isolation and characterization of a bioflocculant produced by Bacillus firmus. Biotechnol. Lett. 24: 35-40.   DOI
9 Kwon, D. Y., C. K. Jung, K. B. Park, C. G. Lee, and J. W. Lee (2011) Flocculation characteristics of microalgae using chemical flocculants. Korean J. Biotechnol. Bioeng. 26: 143-150.   과학기술학회마을   DOI
10 Mercer, P. and R. E. Armenta (2011) Developments in oil extraction from microalgae. Eur. J. Lipid Sci. Technol. 113: 539-547.   DOI
11 Levin, G. V., J. R. Clendenning, A. Gibor, and F. D. Bogar (1961) Harvesting of Algae by Froth Floatation. Resources Research, Inc., Washington, D. C. USA.
12 Dongheui, K. (2009) Removal of algae and organic compounds by dissolves air floatation process. J. Adv. Eng. Technol. 2: 201-205.
13 Chisti, Y. (2007) Biodiesel from microalgae. Biotechnol. Adv. 25: 294-306.   DOI   ScienceOn
14 Brennan, L. and P. Owende (2010) Biofuels from microalgae - A review of technologies for production, processing, and extractions of biofuels and co-products. Renew. Sustain. Energ. Rev. 14: 557-577.   DOI
15 Sharif Hossain, A. B. M. and A. Salleh (2008) Biodiesel fuel production from algae as renewable energy. Am. J. Biochem. Biotech. 4: 250-254.   DOI
16 Szklo, A. and R. Schaeffer (2006) Alternative energy sources or integrated alternative energy systems? Oil as a modern lance of peleus for the energy transition. Energy. 31: 2513-2522.   DOI
17 Raja, R., S. Hemaiswarya, N. A. Kumar, S. Sridhar, and R. Rengasamy (2008) A perspective on the biotechnological potential of microalgae. Crit. Rev. Microbiol. 34: 77-88.   DOI
18 Lee, A. K., D. M. Lewis, and P. J. Ashman (2009) Microbial flocculation, a potentially low-cost harvesting technique for marine microalgae for the production of biodiesel. J. Appl. Phycol. 21: 559-567.   DOI