Environmental Engineering Research

  • 제19권3호
  • /
  • Pages.293-298
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  • 2014
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Conversion of Organic Carbon in Food Processing Wastewater to Photosynthetic Biomass in Photo-bioreactors Using Different Light Sources

  • Suwan, Duangkamon (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University) ;
  • Chitapornpan, Sukhuma (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University) ;
  • Honda, Ryo (Research Center for Sustainable Energy and Technology, Institute of Science and Engineering, Kanazawa University) ;
  • Chiemchaisri, Wilai (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University) ;
  • Chiemchaisri, Chart (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University)
  • 투고 : 2014.05.31
  • 심사 : 2014.09.10
  • 발행 : 2014.09.30
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초록

An anaerobic photosynthetic treatment process utilizing purple non-sulfur photosynthetic bacteria (PNSB) was applied to the recovery of organic carbon from food processing wastewater. PNSB cells, by-product from the treatment, have high nutrition such as proteins and vitamins which are a good alternative for fish feed. Effects of light source on performance of anaerobic photosynthetic process were investigated in this study. Two bench-scale photo-bioreactors were lighted with infrared light emitting diodes (LEDs) and tungsten lamps covered with infrared transmitting filter, respectively, aiming to supply infrared light for photosynthetic bacteria growth. The photo-bioreactors were operated to treat noodle-processing wastewater for 323 days. Hydraulic retention time (HRT) was set as 6 days. Organic removals in the photo-bioreactor lighted with infrared LEDs (91%-95%) was found higher than those in photo-bioreactor with tungsten lamps with filter (79%-83%). Biomass production in a 150 L bench-scale photo-bioreactor was comparable to a 8 L small-scale photo-bioreactor in previous study, due to improvement of light supply efficiency. Application of infrared LEDs could achieve higher treatment performance with advantages in energy efficiency and wavelength specifity.

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참고문헌

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피인용 문헌

  1. Recycling of sugar industry wastewater for single-cell protein production with supplemental carotenoids pp.1479-487X, 2018, https://doi.org/10.1080/09593330.2018.1491633