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Nutrient recovery from biodigestion waste (water) streams and reuse as renewable fertilizers: a two-year field experiment

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Abstract
The aim of this study was to evaluate the impact of using bio-digestion waste derivatives as substitute for synthetic fertilizers and/or as P-poor equivalent for animal manure on soil and crop production. In a field trial, nutrient balances were assessed and the physicochemical soil fertility and quality were evaluated. The biogas yield of the harvested energy crops was also determined. An economical and ecological evaluation was conducted. The highest biomass yields were obtained when the liquid fraction of digestate was used as P-poor fertilizer in addition to animal manure. Furthermore, the complete substitution of synthetic fertilizer N by air scrubber waste water resulted in the highest N and P use efficiencies. Finally, for all reuse scenarios the calculated economical and ecological benefits were significantly higher as compared to the common practice using animal manure and synthetic fertilizers.
Keywords
Anaerobic digestion, digestate processing, cradle-to-cradle nutrient recycling, sustainable agriculture, environmental management, bio-based fertilizers

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Chicago
Vaneeckhaute, Céline, Greet Ghekiere, Evi Michels, Peter A Vanrolleghem, Erik Meers, and Filip Tack. 2013. “Nutrient Recovery from Biodigestion Waste (water) Streams and Reuse as Renewable Fertilizers: a Two-year Field Experiment.” In WEF/IWA Nutrient Removal and Recovery, Conference Proceedings. Water Environment Federation (WEF) ; International Water Association (IWA).
APA
Vaneeckhaute, Céline, Ghekiere, G., Michels, E., Vanrolleghem, P. A., Meers, E., & Tack, F. (2013). Nutrient recovery from biodigestion waste (water) streams and reuse as renewable fertilizers: a two-year field experiment. WEF/IWA Nutrient Removal and Recovery, Conference proceedings. Presented at the WEF/IWA Nutrient Removal and Recovery 2013 : Trends in resource recovery and use, Water Environment Federation (WEF) ; International Water Association (IWA).
Vancouver
1.
Vaneeckhaute C, Ghekiere G, Michels E, Vanrolleghem PA, Meers E, Tack F. Nutrient recovery from biodigestion waste (water) streams and reuse as renewable fertilizers: a two-year field experiment. WEF/IWA Nutrient Removal and Recovery, Conference proceedings. Water Environment Federation (WEF) ; International Water Association (IWA); 2013.
MLA
Vaneeckhaute, Céline, Greet Ghekiere, Evi Michels, et al. “Nutrient Recovery from Biodigestion Waste (water) Streams and Reuse as Renewable Fertilizers: a Two-year Field Experiment.” WEF/IWA Nutrient Removal and Recovery, Conference Proceedings. Water Environment Federation (WEF) ; International Water Association (IWA), 2013. Print.
@inproceedings{4115283,
  abstract     = {The aim of this study was to evaluate the impact of using bio-digestion waste derivatives as substitute for synthetic fertilizers and/or as P-poor equivalent for animal manure on soil and crop production. In a field trial, nutrient balances were assessed and the physicochemical soil fertility and quality were evaluated. The biogas yield of the harvested energy crops was also determined. An economical and ecological evaluation was conducted. The highest biomass yields were obtained when the liquid fraction of digestate was used as P-poor fertilizer in addition to animal manure. Furthermore, the complete substitution of synthetic fertilizer N by air scrubber waste water resulted in the highest N and P use efficiencies. Finally, for all reuse scenarios the calculated economical and ecological benefits were significantly higher as compared to the common practice using animal manure and synthetic fertilizers.},
  author       = {Vaneeckhaute, C{\'e}line and Ghekiere, Greet and Michels, Evi and Vanrolleghem, Peter A and Meers, Erik and Tack, Filip},
  booktitle    = {WEF/IWA Nutrient Removal and Recovery, Conference proceedings},
  keyword      = {Anaerobic digestion,digestate processing,cradle-to-cradle nutrient recycling,sustainable agriculture,environmental management,bio-based fertilizers},
  language     = {eng},
  location     = {Vancouver, BC, Canada},
  pages        = {4},
  publisher    = {Water Environment Federation (WEF) ; International Water Association (IWA)},
  title        = {Nutrient recovery from biodigestion waste (water) streams and reuse as renewable fertilizers: a two-year field experiment},
  year         = {2013},
}