유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제27권4호
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  • Pages.51-59
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  • 2019
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  • 1225-6498(pISSN)
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  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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혐기성소화 슬러지 비율에 따른 미생물전기분해전지의 식종 특성

Startup of Microbial Electrolysis Cells with different mixing ratio of Anaerobic Digested Sludge and Buffer solution

  • 송근욱 (경남과학기술대학교 에너지공학과) ;
  • 백윤정 (경남과학기술대학교 에너지공학과) ;
  • 서휘진 (경남과학기술대학교 에너지공학과) ;
  • 장해남 (경남과학기술대학교 에너지공학과) ;
  • 정재우 (경남과학기술대학교 환경공학과) ;
  • 이명은 (경남과학기술대학교 환경공학과) ;
  • 안용태 (경남과학기술대학교 에너지공학과)
  • Song, Geunwuk (Department of Energy Engineering, Gyeongnam National University of Science and Technology) ;
  • Baek, Yunjeong (Department of Energy Engineering, Gyeongnam National University of Science and Technology) ;
  • Seo, Hwijin (Department of Energy Engineering, Gyeongnam National University of Science and Technology) ;
  • Jang, Hae-Nam (Department of Energy Engineering, Gyeongnam National University of Science and Technology) ;
  • Chung, Jae Woo (Department of Environmental Engineering, Gyeongnam National University of Science and Technology) ;
  • Lee, Myoung-Eun (Department of Environmental Engineering, Gyeongnam National University of Science and Technology) ;
  • Ahn, Yongtae (Department of Energy Engineering, Gyeongnam National University of Science and Technology)
  • 투고 : 2019.11.26
  • 심사 : 2019.12.11
  • 발행 : 2019.12.20
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초록

실험실 규모 회분식 미생물전기분해전지 반응기 (유효부피 20 mL)를 이용하여 수소가스 생산 및 식종기간 특성을 조사하였다. 총 6 cycle 동안 0.9 V를 인가하여 식종슬러지 혼합 비율 (혐기성소화 슬러지:50 mM PBS)에 따른 수소생산 및 식종기간을 분석한 결과 혼합비 1:1 반응기에서 9.8-20.9 mL 수소를 생산하였으며, 수소함량은 66.8-79.6%로 가장 높게 나타났다. 식종기간에 있어서는 혼합비 1:1 반응기 기준으로 약 12일 정도부터는 수소생산 및 전류밀도가 증가하는 것으로 나타났다. 또한 혼합비 1:2, 1:3, 1:4 반응기의 경우 cycle (2-6 cycle)에 따라 수소가스 생산량이 3.7-7.1 mL, 농도 5.8-65.8%로 변화하였으며, 혼합비 1:5, 1:6, 1:7 반응기의 수소가스 생산량은 0.5-0.7 mL, 농도 1.8-7.1%로 나타나 최대 혼합비 1:4까지 식종하는 것이 적합할 것으로 판단된다.

In this study, the influence of anaerobic digested sludge and 50 mM PBS (phosphate buffer solution) mixing ratio (1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7) on hydrogen production and inoculation period were examined. MECs were operated in fed-batch mode with an applied voltage of 0.9 V. As a result, in the 1:1 mixing ratio reactor, 9.8-20.9 mL of hydrogen was produced with the highest hydrogen content of 66.8-79.6%. Hydrogen gas production and power density increased from after 12 days of inoculation for the 1:1 mixing ratio reactor. In case of 1:2, 1:3 and 1:4 mixing ratio reactor, the hydrogen gas production was 3.7-7.1 mL and the hydrogen gas content was 5.8-65.8%. The hydrogen gas yield in 1:5, 1:6 and 1:7 ratio reactors, was 0.50-0.69 mL and hydrogen content range was 1.8-7.1%. The mixing ratio was found to be suitable for hydrogen production and inoculation period by mixing ratio up to 1:4.

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참고문헌

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