Anaerobic co-digestion of marine macroalgae waste and fruit waste: Effect of mixture ratio on biogas production
In: Journal of Environmental Management, Jg. 322 (2022-11-15)
academicJournal
Zugriff:
Keywords Anaerobic co-digestion; Fruit waste; Marine macroalgae waste; Biomass recovery; Renewable energy Highlights * Co-digestion of Marine Macroalgae Waste with fruit waste was studied. * Better results were achieved using 60%w/w marine macroalgae waste. * Maximum biogas yield and CH.sub.4 concentration were 295 mL/g VS and 72%. * Maximum estimated CH.sub.4 yield corresponded to ~46% of the theoretical. * By co-digestion, biogas yield increased 42 times compared with mono-digestion. Abstract Marine macroalgae waste (MMW) was used at different mixing ratios with fruit waste (FW) to evaluate the potential of co-digestion in enhancing methane yield. The process was conducted at mesophilic conditions (37 [degree]C) with a fixed amount of biomass (10 g, 3.5% TS) and inoculum (150 mL; digested sewage sludge) and using MMW:FW ratios from 40:60 to 70:30. The results showed inhibition of the process for most of the studied substrate ratios, and in the mono-digestion of both substrates, possibly due to the accumulation of volatile fatty acids. A maximum biogas yield of 295 mL/g VS with 72% of methane was however obtained for the 60MMW:40FW ratio, corresponding to an estimated maximum methane yield of 213 mL/g VS and around 46% of the theoretical maximum methane production (49% of organic matter removal). The results show that the co-digestion of MMW with FW enhances the methane yield of both independent substrates. Abbreviations AD, Anaerobic Digestion; C:N, Carbon to Nitrogen ratio; COD, Chemical Oxygen Demand; FVW, Fruit and Vegetable Wastes; FW, Fruit Waste; MM, Marine Macroalgae; MMW, Marine Macroalgae Waste; TS, Total Solids; VFA, Volatile Fatty Acids; VS, Volatile Solids; WWTP, Wastewater Treatment Plant Author Affiliation: (a) Laboratory for Process Engineering, Environment, Biotechnology and Energy (LEPABE), Department of Metallurgical and Materials Engineering, Faculty of Engineering of University of Porto, 4200-465, Porto, Portugal (b) Laboratory of Separation and Reaction Engineering -- Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering of University of Porto, 4200-465, Porto, Portugal (c) ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465, Porto, Portugal * Corresponding author. Laboratory for Process Engineering, Environment, Biotechnology and Energy (LEPABE), Department of Metallurgical and Materials Engineering, Faculty of Engineering of University of Porto, 4200-465, Porto, Portugal. Article History: Received 31 May 2022; Revised 18 August 2022; Accepted 28 August 2022 Byline: Sara Pardilhó (a,c), Rui Boaventura (b,c), Manuel Almeida (a,c), Joana Maia Dias [jmdias@fe.up.pt] (a,c,*)
Titel: |
Anaerobic co-digestion of marine macroalgae waste and fruit waste: Effect of mixture ratio on biogas production
|
---|---|
Autor/in / Beteiligte Person: | Pardilhó, Sara ; Boaventura, Rui ; Almeida, Manuel ; Maia Dias, Joana |
Link: | |
Zeitschrift: | Journal of Environmental Management, Jg. 322 (2022-11-15) |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 0301-4797 (print) |
DOI: | 10.1016/j.jenvman.2022.116142 |
Schlagwort: |
|
Sonstiges: |
|