Digestate Composition Affecting N Fertiliser Value and C Mineralisation

نویسندگان

چکیده

Abstract A variety of organic feedstocks can be used for anaerobic digestion, resulting in digestates with different compositions, affecting the fertiliser value. Therefore, two experiments were conducted to assess (1) differences nitrogen (N) value seven from a 2-year field experiment spring wheat, and (2) degradability matter (OM) within an aerobic incubation experiment. In field, mineral equivalents range 18–60% (1st year) 39–83% (2nd year). Fertiliser properties could describe 58.9–74.2% N offtake variance among digestates. experiment, produced 720–1900 mg CO 2 -C kg ?1 . After 56 days, 61% C added by food waste digestate has been mineralised, compared 16–22% other Digestate composition (C/N, org /N , carbonate, cellulose, lignin, crude fibre) explain 90.4% evolution. both experiments, digested stood out highest OM mineralisation. conclusion, related compositional variations. However, apart waste, had only minor influence on performance after soil application. Graphical

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ژورنال

عنوان ژورنال: Waste and Biomass Valorization

سال: 2022

ISSN: ['1877-2641', '1877-265X']

DOI: https://doi.org/10.1007/s12649-022-01723-y