Treatment of bio-diesel fuel wastewater using aerobic thermophilic bacteria <i>Bacillus licheniformis </i>strain MU11

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  • Yamano Koji
    Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto
  • Watanabe Reito
    Graduate School of Frontier Bioscience, Osaka University
  • Kai Hotaka
    National Institute of Technology, Suzuka College
  • Yamaguchi Masahiro
    National Institute of Technology, Suzuka College
  • Nakashima Takuji
    Graduate School of Infection Control Sciences, Kitasato University
  • Araki Kento
    Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto
  • Yakushiji Yuka
    Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto
  • Arizono Koji
    Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto
  • Ishibashi Yasuhiro
    Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto

Bibliographic Information

Other Title
  • 好気高熱性細菌（<i>Bacillus licheniformis </i>MU11株）を用いたバイオディーゼル燃料廃水の処理
  • 好気高熱性細菌(Bacillus licheniformis MU11株)を用いたバイオディーゼル燃料廃水の処理
  • コウキコウネツセイ サイキン(Bacillus licheniformis MU11カブ)オ モチイタ バイオディーゼル ネンリョウ ハイスイ ノ ショリ

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Abstract

<p>During the production of biodiesel fuel, wastewater containing about 10 to 20% of raw material oil such as glycerin,methanol, soap components and impurities such as unconverted fatty acids is generated. This wastewater can be treated by biological treatment such as activated sludge method, but there is no efficient treatment method. Therefore, in this study, we examined the optimum treatment conditions for the purpose of treating biodiesel fuel wastewater.</p><p>The biodiesel fuel wastewater contains water soluble components and oil and, is emulsified. It was confirmed that the addition of an acid was effective for the decomposition of this emulsion (emulsion break). And that the oil component was separated by the decomposition of the emulsion, then the COD of the aqueous layer could be reduced. Also,substances that are the main cause of organic pollution of biodiesel fuel wastewater after emulsion break are glycerin and methanol. Furthermore, it was shown that in the hybrid condition in which activated sludge and MU11 strain were mixed,the rate of decrease of CODMn was fast compared to other conditions. Finally, Hybrid conditions have been shown to be effective for the treatment of biodiesel fuel wastewater.</p>

Journal

  • Journal of Environment and Safety

    Journal of Environment and Safety 10 (3), 177-187, 2019

    Academic Consociation of Environmental Safety and Waste Management, Japan

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