KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Effect of Nonionic Surfactant SPAN 20 on the Biodesulfurization Process by Rhodococcus sp. strain IGTS8

비이온 계면활성제인 SPAN 20 이 Rhodococcus sp. Strain IGTS8을 이용한 미생물 탈황공정에 미치는 영향

  • 박홍우 (한양대학교 공과대학 화학공학과) ;
  • 박기돈 (한양대학교 공과대학 화학공학과) ;
  • 오성근 (한양대학교 공과대학 화학공학과)
  • Published : 2002.06.01
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Abstract

The effects of nonionic surfactant (SPAN 20) on the desulfurization process by Rhodococcus sp. strain IGTS8 have been investigated at various oil/water ratios, pHs and concentrations of surfactant. The hexadecane containing DBT was employed as model oil. The presence of surfactant in the oil/water mixture stabilized the oil/water interface, thus enhanced the efficiency of desulfurization. The volume percentages of oil in the oil/water mixture were 30, 50 and 70%. The concentrations of surfactant were varied from 0 to 0.33 wt% relative to water phase. In general, the biodesulfurization efficiencies were decreased as the concentration of SPAN 20 and the volume percentage of oil phase increased.

본 연구에서는 Rhodococcus sp. strain IGTS8을 이용한 미생물 탈황공정에 있어서 비이온 계면활성제인 SPAN의 영향을 조사하였다. 탈황 효율 연구에 있어서 모델 오일로는 DBT가 함유된 hexadecane, 수상으로는 배지 용액을 이용하였다. 연구에 있어서 실험 변수로는 오일/물 혼합물에 있어서 오일의 부피 %, SPAN 20의 농도, 용액의 pH로 하였으며 일반적으로 오일의 부피 비율, 계면활성제의 농도가 증가할 수록 탈황 효율이 감소되었다. 이러한 결과는 오일의 부피비가 증가할수록 계면활성제의 농도가 증가할수록 오일상의 OBT와 균주의 효율적인 접촉이 저해되기 때문으로 고려된다.

Keywords

References

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