KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
권호 표지
DOI QR코드

DOI QR Code

Optimization of Microalgae Harvesting Using Flocculation and Dissolved Air Floatation

Flocculation과 Dissolved Air Floatation을 이용한 미세조류 수확 최적화

  • 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)
  • Received : 2012.03.30
  • Accepted : 2012.04.20
  • Published : 2012.04.30
Download PDF
⟨ Previous Next ⟩

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

References

  1. 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. https://doi.org/10.1016/j.rser.2009.10.009
  2. Sharif Hossain, A. B. M. and A. Salleh (2008) Biodiesel fuel production from algae as renewable energy. Am. J. Biochem. Biotech. 4: 250-254. https://doi.org/10.3844/ajbbsp.2008.250.254
  3. 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. https://doi.org/10.1016/j.energy.2005.11.001
  4. Chisti, Y. (2007) Biodiesel from microalgae. Biotechnol. Adv. 25: 294-306. https://doi.org/10.1016/j.biotechadv.2007.02.001
  5. 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. https://doi.org/10.1080/10408410802086783
  6. 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. https://doi.org/10.1007/s10811-008-9391-8
  7. 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. https://doi.org/10.1016/j.copbio.2008.05.007
  8. Somasundaran, P. and T. Hubbard (2006) Encyclopedia of Surface and Colloid Science. 2nd ed., pp. 2588-2591. CRC Press, Taylor & Francis Group, NY, USA.
  9. 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. https://doi.org/10.1063/1.3294480
  10. Kurane, R. and H. Matsuyama (1994) Production of a bioflocculant by mixed culture. Biosci. Biotechnol. Biochem. 58: 1589-1594. https://doi.org/10.1271/bbb.58.1589
  11. 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. https://doi.org/10.1007/s12010-010-9054-5
  12. Salehizadeh, H. and S. A. Shojaosadati (2002) Isolation and characterization of a bioflocculant produced by Bacillus firmus. Biotechnol. Lett. 24: 35-40. https://doi.org/10.1023/A:1013853115624
  13. 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. https://doi.org/10.7841/ksbbj.2011.26.2.143
  14. Mercer, P. and R. E. Armenta (2011) Developments in oil extraction from microalgae. Eur. J. Lipid Sci. Technol. 113: 539-547. https://doi.org/10.1002/ejlt.201000455
  15. 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.
  16. Dongheui, K. (2009) Removal of algae and organic compounds by dissolves air floatation process. J. Adv. Eng. Technol. 2: 201-205.
  17. Tripathy, T. and B. R. De (2006) Flocculation: A new way to treat the waste water. J. Phys. Sci. 10: 93-127.
  18. 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. https://doi.org/10.1016/S0734-9750(02)00050-2