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| 001 | 1053896 | ||
| 005 | 20260203085631.0 | ||
| 024 | 7 | _ | |a 10.34734/FZJ-2026-01594 |2 datacite_doi |
| 037 | _ | _ | |a FZJ-2026-01594 |
| 100 | 1 | _ | |a Busch, Franziska |0 P:(DE-Juel1)194590 |b 0 |
| 245 | _ | _ | |a Dynamics of greenhouse gas emissions and nitrogen availability asinfluenced by biochar particles during composting |f - 2023-08-31 |
| 260 | _ | _ | |c 2023 |
| 300 | _ | _ | |a 60 |
| 336 | 7 | _ | |a Output Types/Supervised Student Publication |2 DataCite |
| 336 | 7 | _ | |a Thesis |0 2 |2 EndNote |
| 336 | 7 | _ | |a MASTERSTHESIS |2 BibTeX |
| 336 | 7 | _ | |a masterThesis |2 DRIVER |
| 336 | 7 | _ | |a Master Thesis |b master |m master |0 PUB:(DE-HGF)19 |s 1770105016_30270 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a SUPERVISED_STUDENT_PUBLICATION |2 ORCID |
| 502 | _ | _ | |a Masterarbeit, University of Bonn, 2023 |c University of Bonn |b Masterarbeit |d 2023 |
| 520 | _ | _ | |a In this study, a 148-day composting of vegetable waste, horse manure and wheat straw wasconducted to investigate the greenhouse gas (GHG) emissions and nitrogen (N) dynamics asinfluenced by the addition of biochar (bc). A special research focus has been placed on theretention of the N-forms by the bc. GHG (CO2, CH4, N2O) were measured with gas chromatographyand mineral N of the compost substrate was analyzed with standard methods (0.01 molL−1 CaCl2). In addition, N retained by bc particles was analyzed by a three-stage extraction procedureand bc particles were also analyzed by 13C NMR spectroscopy. These methods provideda comprehensive insight into the temporal dynamics of GHG emissions, the amount and availabilityof N retained by bc particles, and the change in chemical groups of bc during compostingwith bc amendment. The addition of bc (15%) did not significantly reduce or increase GHGemissions compared to the control (ctrl) compost. Cumulative emissions averaged at 4016(ctrl) and 3706 (bc) g CO2-C m−2, 2171 (ctrl) and 3332 (bc) mg CH4-C m−2 and 715 (ctrl) and562.8 (bc) mg N2O-N m−2. The concentrations of NH4+–N, NO3––N, NO2––N did not differ significantlybetween the treatments, but significantly higher (54%) total amounts of NO3––N (gpile−1) were measured for the whole compost pile in the bc treatment, indicating lower NO3–1losses throughout the composting. The retention of N forms by bc particles was not reflectedin significantly lower N2O emissions. However, N forms were effectively retained in varyingdegrees of strength by the bc particles. The NH4+–N concentrations that could be extractedfrom the bc particles decreased during the composting process. The percentage distributionshows a clear transition from predominantly plant-available (55%) at the beginning of compostingto predominantly tightly bound (75%) NH4+–N in the final compost. At the end of thecomposting process, the extractable NO3––N concentration from bc particles was 164 mg kg−1(easily extractable), 80 mg kg−1 (not available) and 194 mg kg−1 (strongly retained). Until thelast day of composting, these concentrations increased continuously with a distribution towardsrather strongly bound NO3––N. It can be concluded that the addition of bc tended toprotect against N losses. |
| 536 | _ | _ | |a 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217) |0 G:(DE-HGF)POF4-2173 |c POF4-217 |f POF IV |x 0 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/1053896/files/Thesis.pdf |y OpenAccess |
| 910 | 1 | _ | |a Forschungszentrum Jülich |0 I:(DE-588b)5008462-8 |k FZJ |b 0 |6 P:(DE-Juel1)194590 |
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| 915 | _ | _ | |a OpenAccess |0 StatID:(DE-HGF)0510 |2 StatID |
| 920 | _ | _ | |l yes |
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| 980 | _ | _ | |a master |
| 980 | _ | _ | |a VDB |
| 980 | _ | _ | |a UNRESTRICTED |
| 980 | _ | _ | |a I:(DE-Juel1)IBG-3-20101118 |
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