Swine manure treatment technologies as drivers for circular economy in agribusiness: A techno-economic and life cycle assessment approach

Hollas, Camila Ester; Rodrigues, Heloisa Campeão; Bolsan, Alice Chiapetti; Venturin, Bruno; Bortoli, Marcelo; Antes, Fabiane Goldschmidt; Steinmetz, R. L. R.; Kunz, Airton

doi:10.1016/j.scitotenv.2022.159494

Cited by 10 publications

(3 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the clear SOM differences in aggregate core and surface in one digestate-treated plot but not in the other we conclude that small-scale differences in aggregate-affecting soil properties, like, e.g., texture, as well as the time-dependent processes of SOM incorporation into aggregate cores likely govern the distribution of the organic matter in aggregates. 4. In summary, considering the increasing digestate application in agricultural practice which here yielded disagreeing results for materials of different origins and different field plots, it appears to be more challenging than traditional soil amendments such as farmyard manure or slurry applications for which long-term and consistent experimental data are at hand.…”

Section: Discussionmentioning

confidence: 76%

“…In the development of renewable energy, increasing numbers of biogas plants for industrial utilization of anaerobic digestion of agro-industrial residues and domestic organic wastes, produce large amounts of highly diverse digestates [1]. Their suitability as alternative fertilizers needs to be tested (e.g., [2][3][4]). Generally, mineral fertilized has a lower microbial activity than soils that received organic amendments [5].…”

Section: Introductionmentioning

confidence: 99%

“…Lipids: alkanes, alkenes, alkanoic acids, alkyl ester; 2 N-containing compounds: aromatic N-heterocyclic compounds and nitriles; 3 Amides: nonaromatic amides (peptides, amino sugars) and free amino acids;4 Free fatty acids: n-alkanoic acids from n-C 16 to n-C 34 , n.d.: not determined.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Influence of Biogas Digestates on the Composition of Soil Organic Matter

Jandl¹,

Horn²,

Schroeder³

et al. 2023

J Energ Power Technol

View full text Add to dashboard Cite

The increasing number of biogas plants with various digested organic materials and output of digestates calls for more detailed investigations of their suitability as soil amendments. In a trial in Northern Germany two replicate plots each were treated with fresh or prolonged fermented digestate to investigate the influence of digestates on the composition of soil organic matter (SOM). The relative proportions of relevant SOM compound classes were determined by pyrolysis-field ionization mass spectrometry (Py-FIMS) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Using these two methods the influence of digestate on the SOM composition was illustrated by the statistical spectra evaluation by principal component analysis. In both digestate-treated plots, the relative proportions of the slowly degradable alkylaromatic compounds and lipids were larger. In contrast, easily degradable carbohydrates and amides and mostly heterocyclic N-compounds were less than in the control plots. However, these SOM differences due to digestates were less pronounced than differences in the composition of autochthonous SOM in the control plots. In one of the treatments N- and alkylaromatic compounds were more abundant in the aggregate core than on the aggregate surface. In contrast, aliphatic compounds were more abundant on the aggregate surface as disclosed by Py-FI and pyrolysis-gas chromatography-mass spectra (Py-GC/MS). In conclusion, increasing amounts of digestate should be critically monitored according to different digestate feedstock, soil types, ecological factors and crop growth/yield.

show abstract

Section: Discussionmentioning

confidence: 76%