Anaerobic Digestion of Fruit Waste Mixed With Sewage Sludge Digestate Biochar: Influence on Biomethane Production - Archive ouverte HAL Access content directly
Journal Articles Frontiers in Energy Research Year : 2020

Anaerobic Digestion of Fruit Waste Mixed With Sewage Sludge Digestate Biochar: Influence on Biomethane Production

(1, 2, 3) , (1) , (1) , (1) , (4, 1)
1
2
3
4

Abstract

The main aim of this study was to evaluate the biomethane potential (BMP) of fruit waste by incorporating additives such as sewage sludge biochar at different inoculum-to-substrate ratios (ISRs) of 2, 1.5, and 1 (wt./wt.). The results showed an improvement in the maximum methane production by 13, 20, and 27% upon the addition of sewage sludge biochar produced at 350 • C for ISR of 2, 1.5, and 1 (wt./wt.), respectively, and an increase 12, 18, and 22% for the added biochar produced at 550 • C for ISR of 2, 1.5, and 1 (wt./wt.), respectively, compared to the BMP tests performed without the addition of biochar (i.e., the control). Biochar addition reduced volatile fatty acid (VFA) formation during the digestion of fruit waste as compared to the control reactor, which is a strong indication that the metabolic process of the system was streamlined to methanogenesis. The maximum methane yield for the tested fruit substrates was 285.7 mL CH4/g in the presence of biochar prepared at a low temperature (350 • C). This value is higher than one obtained with same amount of biochar prepared at a higher temperature (550 • C). The results from this study showed that the effectiveness of the anaerobic digestion process depends on the ISR, biochar dose, and the pyrolysis temperature used for the production of the sewage sludge digestate biochar.
Fichier principal
Vignette du fichier
fenrg-08-00031(1).pdf (1015.69 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

insu-02894557 , version 1 (09-07-2020)

Identifiers

Cite

Teklit Gebregiorgis Ambaye, Eldon R Rene, Capucine Dupont, Suchanya Wongrod, Eric D. van Hullebusch. Anaerobic Digestion of Fruit Waste Mixed With Sewage Sludge Digestate Biochar: Influence on Biomethane Production. Frontiers in Energy Research, 2020, 1, ⟨10.3389/fenrg.2020.00031⟩. ⟨insu-02894557⟩
30 View
81 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More