Enhanced anaerobic co-digestion of cattle manure with food waste and pig manure Statistical optimization of pretreatment condition and substrate mixture ratio

Enhanced anaerobic co-digestion of cattle manure with food waste and pig manure : Statistical optimization of pretreatment condition and substrate mixture ratio

Copyright © 2024 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 183(2024) vom: 30. Juni, Seite 32-41
1. Verfasser: Jo, Sangyeol (VerfasserIn)
Weitere Verfasser: Bae, Jonghun, Kadam, Rahul, Lee, Jonghwa, Park, Jungyu, Jun, Hangbae
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Biogas Cattle manure Co-digestion Design expert Pretreatment Manure Methane OP0UW79H66 Food Loss and Waste
Beschreibung
Zusammenfassung:Copyright © 2024 Elsevier Ltd. All rights reserved.
This study investigated the optimal pretreatment condition and mixture ratio of cattle manure (CM) for its efficient anaerobic co-digestion (AcoD) with food waste (FW) and pig manure (PM). The pretreatment performances of thermal (TM), microwave (MW), and ultrasound (US) technologies and the AcoD performance were statistically and experimentally evaluated at various mixture ratios of CM, FW, and PM. The results revealed that the most effective pretreatment condition with the TM, MW, and US pretreatments was 129.3 °C for 49.6 min, 824.2 W for 7.3 min, and 418.0 W for 36.3 min, respectively. The best AcoD performance of optimally pretreated CM (PCM) was achieved when 30.5 % PCM was mixed with 42.5 % FW and 27.0 % PM. A long-term evaluation showed that the start-up rate for the anaerobic mono-digestion of PCM was 2.3 times faster than that of CM and the amount of methane produced was 4.7 times higher; process stability was thus preferentially maintained under a higher organic loading rate (OLR) (2.0 kg-VS/m3∙d). The start-up rate for the AcoD of PCM with FW and PM was 1.2 times higher than that of the AcoD of CM with FW and PM. Although the performance gap between the AcoD reactors after steady state was not significantly different, the PCM AcoD reactor provided a more stable operation under a higher OLR (5.0 kg-VS/m3∙d). This study demonstrates that the pretreatment and co-digestion of CM could significantly enhance the production of biogas and improve process stability
Beschreibung:Date Completed 01.06.2024
Date Revised 01.06.2024
published: Print-Electronic
Citation Status MEDLINE
ISSN:1879-2456
DOI:10.1016/j.wasman.2024.04.043