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Solid recovery rate of food waste recycling in South Korea

  • SPECIAL FEATURE: ORIGINAL ARTICLE
  • 2nd 3R International Scientific Conference (2nd 3RINCs 2015)
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Journal of Material Cycles and Waste Management Aims and scope Submit manuscript

Abstract

Source-separated collection system of household food waste has been implemented national wide in South Korea. Food waste recycling rate that means conversion rate to recycle is over 90 % in present. However, over the value of 90 %, we need to enhance the efficiency of food waste recycling process. We analyzed material flow of 24 food waste recycling facilities and calculated solid recovery rate to key-process. We found that 3–13 % of the solids from food waste outflows with foreign materials and 27–33 % of the solids outflow with wastewater. As a result, solid recovery rates are 65.3, 60.9, and 56.3 % in wet feed facility, dry feed facility, and composting facility, respectively. Alternative ways to recovery solid from wastewater or collection tools to exclude plastic bags, salt, and moisture content are required to make food waste recycling more efficient.

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Acknowledgments

This research was supported by a Grant (15AUDP-B083704-02) from Architecture and Urban Development Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government.

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Authors and Affiliations

  1. Institute of Construction and Environmental Engineering, Seoul National University, Seoul, South Korea

    Munsol Ju

  2. Department of Environmental Engineering, University of Seoul, Seoul, South Korea

    Sung-Jin Bae & Dong-Hoon Lee

  3. Department of Civil and Environmental Engineering, Seoul National University, Seoul, South Korea

    Jae Young Kim

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  1. Munsol Ju
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  2. Sung-Jin Bae
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  3. Jae Young Kim
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  4. Dong-Hoon Lee
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Correspondence to Dong-Hoon Lee.

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Ju, M., Bae, SJ., Kim, J.Y. et al. Solid recovery rate of food waste recycling in South Korea. J Mater Cycles Waste Manag 18, 419–426 (2016). https://doi.org/10.1007/s10163-015-0464-x

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  • DOI: https://doi.org/10.1007/s10163-015-0464-x

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