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Simultaneous Denitrification and Bio-Methanol Production for Sustainable Operation of Biogas Plants

Author

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  • I-Tae Kim

    (Division of Environment and Plant Engineering, Korea Institute of Civil Engineering and Building Technology 283, Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Korea)

Abstract

This study was conducted to secure the sustainability of biogas plants for generating resources from food waste (FW) leachates, which are prohibited from marine dumping and have been obligated to be completely treated on land since 2013 in South Korea. The aim of this study is to reduce the nitrogen load of the treatment process while producing bio-methanol using digested FW leachate diverted into wastewater treatment plants. By using biogas in conditions where methylobacter ( M. marinus 88.2%) with strong tolerance to highly chlorinated FW leachate dominated, 3.82 mM of methanol production and 56.1% of total nitrogen (TN) removal were possible. Therefore, the proposed method can contribute to improving the treatment efficiency by accommodating twice the current carried-in FW leachate amount based on TN or by significantly reducing the nitrogen load in the subsequent wastewater treatment process. Moreover, the produced methanol can be an effective alternative for carbon source supply for denitrification in the subsequent process.

Suggested Citation

  • I-Tae Kim, 2019. "Simultaneous Denitrification and Bio-Methanol Production for Sustainable Operation of Biogas Plants," Sustainability, MDPI, vol. 11(23), pages 1-14, November.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:23:p:6658-:d:290614
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    Cited by:

    1. He Zhang & Ashish T. Asutosh & Junxue Zhang, 2022. "A quantitative sustainable comparative study of two biogas systems based on energy, emergy and entropy methods in China," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(12), pages 13583-13609, December.

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