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Erschienen in: Biomass Conversion and Biorefinery 5/2021

02.05.2020 | Original Article

Effects of C/N ratio on anaerobic co-digestion of cabbage, cauliflower, and restaurant food waste

verfasst von: I. Beniche, J. Hungría, H. El Bari, J. A. Siles, A. F. Chica, M. A. Martín

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 5/2021

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Abstract

Every day, a large amount of food waste (FW) is generated that causes serious environmental problems such as the production of greenhouse gases and leachate. A possible treatment for this waste is anaerobic digestion (AD), but there are several problems associated with the accumulation of volatile fatty acids (VFA), foaming, or low buffer capacity. In order to resolve or mitigate this problem, FW was mixed with cabbage and cauliflower (CCF) leaves and stalks at different carbon/nitrogen ratios (C/N) to add value to this agricultural waste and benefit from the advantages of co-digestion. Under the study conditions, promising results were obtained during the co-digestion of FW and agricultural wastes at C/N = 45. These include a high biodegradability (98%), a methane yield of 475 mLSTP CH4/g VS, and an organic loading rate (OLR) of 0.06 kg of VS/m3 h for the CCF and FW mixture (CCF + FW). Anaerobic co-digestion of CCF + FW might be an interesting option for the simultaneous treatment of these types of organic waste, with the consequent social and environmental benefits.

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Metadaten
Titel
Effects of C/N ratio on anaerobic co-digestion of cabbage, cauliflower, and restaurant food waste
verfasst von
I. Beniche
J. Hungría
H. El Bari
J. A. Siles
A. F. Chica
M. A. Martín
Publikationsdatum
02.05.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 5/2021
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-020-00733-x

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