KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Flocculation Characteristics of Microalgae Through Combined Flocculants

응집제 혼합을 이용한 미세조류의 응집 특성

  • Kwon, Do-Yeon (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Jung, Chang-Kyou (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Lee, Choul-Gyun (Department of Biological Engineering, Inha University) ;
  • Lee, Jin-Won (Department of Chemical and Biomolecular Engineering, Sogang University)
  • 권도연 (서강대학교 화공생명공학과) ;
  • 정창규 (서강대학교 화공생명공학과) ;
  • 이철균 (인하대학교 생명공학과) ;
  • 이진원 (서강대학교 화공생명공학과)
  • Received : 2011.08.24
  • Accepted : 2011.10.25
  • Published : 2011.10.31
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Abstract

In this study, inorganic flocculant with biodegradable polymer flocculant was usedfor microalgae harvest. The aim of this study was to optimize the concentration of inorganic flocculant, the concentration of biodegradable polymer flocculant and reaction volume for decreasing the amounts of flocculant and obtaining the suitable pH range for seawater by response surface methodology. The flocculation of three marine microalgae, Chlorella ellipsoidea, Dunaliella bardawil, and Dunaliella tertiolecta, using inorganic flocculants and biodegradable polymer flocculants was investigated. The results indicated that the optimal flocculant quantity showed 0.1 g/L of ferric chloride, 7.5 g/L of chitosan on Chlorella ellipsoidea. In the case of Dunaliella bardawil, the optimal flocculant quantity showed amount of ferric sulfate more than 0.12 g/L and chitosan more than 0.75 g/L. In the case of Dunaliella tertiolecta, the optimal flocculant quantity showed 1.0 g/L of sodium aluminate, 0.75 g/L of chitosan.

Keywords

References

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