Bio-slurry as fertilizer : is bio-slurry from household digesters a better fertilizer than manure? : a literature review

L.T.C. Bonten, K.B. Zwart, R.P.J.J. Rietra, R. Postma, M.J.G. de Haas, S.L. Nysingh

Research output: Book/ReportReportProfessional

Abstract

In many developing countries manure is anaerobically digested to produce biogas. The residue of manure digestion, bio-slurry, can be used as fertilizer for crop production and aquaculture. This study compared bio-slurry and manure as fertilizers. Nutrients in bio-slurry, especially nitrogen, are more readily available then in manure, leading to a larger short term fertilisation effect. However, risks for N losses through volatilisation and leaching are large for bio-slurry than for manure during storage, handling and application. Unfortunately, most studies that compared bio-slurry and manure exhibited methodological shortcomings that hamper an adequate comparison.
Original languageEnglish
Place of PublicationWageningen
PublisherAlterra, Wageningen-UR
Number of pages45
Publication statusPublished - 2014

Publication series

NameAlterra-report
PublisherAlterra Wageningen UR
No.2519
ISSN (Print)1566-7197

Keywords

  • fertilizer application
  • digestate
  • biogas slurry
  • fermentation
  • comparisons
  • developing countries
  • biobased economy

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