Recovery and Recycling of Nitrogen and Phosphorus as Struvite from Livestock Excreta

가축분뇨로부터 struvite 결정화에 의한 질소 (N), 인 (P) 회수 및 자원화 방안 고찰

  • Ryu, Hong-Duck (Watershed and Total Load Management Division, National Institute of Environmental Research) ;
  • Ahn, Ki Hong (Watershed and Total Load Management Division, National Institute of Environmental Research) ;
  • Chung, Eu Gene (Watershed and Total Load Management Division, National Institute of Environmental Research) ;
  • Kim, Yongseok (Watershed and Total Load Management Division, National Institute of Environmental Research) ;
  • Rhew, Doughee (Watershed and Total Load Management Division, National Institute of Environmental Research)
  • Received : 2016.08.24
  • Accepted : 2016.09.30
  • Published : 2017.01.31


This study evaluated the feasibility of recovering and recycling nitrogen (N) and phosphorus (P) from livestock excreta as struvite ($MgNH_4PO_4{\cdot}6H_2O$) in South Korea. Our experimental results showed that struvite precipitation was a very effective way to recover N and P from livestock excreta. Moreover, our study demonstrated that struvite precipitates from livestock excreta (SPL) contain higher concentrations of N, P, and magnesium (Mg) as compared to compost and liquid manure from livestock excreta. In addition, although SPL contain high concentrations of copper (Cu) and zinc (Zn), they meet the fertilizer criteria for concentrations of heavy metals. In South Korea, SPL cannot currently be used as a fertilizer due to legal constraints. Legal permission for SPL use would offer greater choice in livestock excreta management. In conclusion, recovery and recycling of N and P from livestock excreta as struvite can be an effective tool for managing nutrients in livestock excreta.


Livestock excreta;Struvite;Nitrogen;Phosphorus;Heavy metals;Fertilizer


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