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Anaerobic Co-Digestion of Food Waste and Groundnut Shells: Synergistic Impact Assessment and Kinetic Modeling
https://orcid.org/0000-0001-6482-1754
Abstract Consumers’ consumption patterns and the global population’s livelihood have led to an increase in waste streams. Food waste (FW), agricultural residues, and livestock wastes are some of the major waste streams that require effective and economical management. This study investigated the biomethane potential, biodegradability, and synergistic effect index of FW and groundnut shells (GS) co-digestion at mesophilic temperature. FW and GS were co-digested at different mixing ratios. In addition, three kinetic models were evaluated and compared for mono and co-digestion. It was discovered that anaerobic co-digestion of FW and GS improved the biomethane released compared to mono-digestion, and the optimum biomethane yield was noticed at 50: 50 with a 32.28% increase. The C/N ratio and biodegradability of FW were enhanced by adding GS as a co-substrate. Co-digestion of the substrates showed a good synergistic influence and reduced the retention time. Pretreatment of GS may be needed to increase the efficiency of the process. Cumulative biomethane yield was fitted with Gompertz, modified Gompertz, and Schnute models, and all the models fit well for both mono and co-digestion of FW and GS. The model production rate is 23.10, 27.78, 23.49, 18.53, and 16.45 mld− 1, and the coefficient of correlation (R2) ranges between 0.97 and 0.99. Anaerobic co-digestion of FW and GS was found to be a suitable combination for improved biomethane production, and kinetic models were considered to have the capacity to describe the anaerobic digestion of FW and GS. Graphical Abstract
Anaerobic Co-Digestion of Food Waste and Groundnut Shells: Synergistic Impact Assessment and Kinetic Modeling
https://orcid.org/0000-0001-6482-1754
Abstract Consumers’ consumption patterns and the global population’s livelihood have led to an increase in waste streams. Food waste (FW), agricultural residues, and livestock wastes are some of the major waste streams that require effective and economical management. This study investigated the biomethane potential, biodegradability, and synergistic effect index of FW and groundnut shells (GS) co-digestion at mesophilic temperature. FW and GS were co-digested at different mixing ratios. In addition, three kinetic models were evaluated and compared for mono and co-digestion. It was discovered that anaerobic co-digestion of FW and GS improved the biomethane released compared to mono-digestion, and the optimum biomethane yield was noticed at 50: 50 with a 32.28% increase. The C/N ratio and biodegradability of FW were enhanced by adding GS as a co-substrate. Co-digestion of the substrates showed a good synergistic influence and reduced the retention time. Pretreatment of GS may be needed to increase the efficiency of the process. Cumulative biomethane yield was fitted with Gompertz, modified Gompertz, and Schnute models, and all the models fit well for both mono and co-digestion of FW and GS. The model production rate is 23.10, 27.78, 23.49, 18.53, and 16.45 mld− 1, and the coefficient of correlation (R2) ranges between 0.97 and 0.99. Anaerobic co-digestion of FW and GS was found to be a suitable combination for improved biomethane production, and kinetic models were considered to have the capacity to describe the anaerobic digestion of FW and GS. Graphical Abstract
Anaerobic Co-Digestion of Food Waste and Groundnut Shells: Synergistic Impact Assessment and Kinetic Modeling
https://orcid.org/0000-0001-6482-1754
Abstract Consumers’ consumption patterns and the global population’s livelihood have led to an increase in waste streams. Food waste (FW), agricultural residues, and livestock wastes are some of the major waste streams that require effective and economical management. This study investigated the biomethane potential, biodegradability, and synergistic effect index of FW and groundnut shells (GS) co-digestion at mesophilic temperature. FW and GS were co-digested at different mixing ratios. In addition, three kinetic models were evaluated and compared for mono and co-digestion. It was discovered that anaerobic co-digestion of FW and GS improved the biomethane released compared to mono-digestion, and the optimum biomethane yield was noticed at 50: 50 with a 32.28% increase. The C/N ratio and biodegradability of FW were enhanced by adding GS as a co-substrate. Co-digestion of the substrates showed a good synergistic influence and reduced the retention time. Pretreatment of GS may be needed to increase the efficiency of the process. Cumulative biomethane yield was fitted with Gompertz, modified Gompertz, and Schnute models, and all the models fit well for both mono and co-digestion of FW and GS. The model production rate is 23.10, 27.78, 23.49, 18.53, and 16.45 mld− 1, and the coefficient of correlation (R2) ranges between 0.97 and 0.99. Anaerobic co-digestion of FW and GS was found to be a suitable combination for improved biomethane production, and kinetic models were considered to have the capacity to describe the anaerobic digestion of FW and GS. Graphical Abstract
Anaerobic Co-Digestion of Food Waste and Groundnut Shells: Synergistic Impact Assessment and Kinetic Modeling
Waste Biomass Valor
Olatunji, K. O. (author) / Mootswi, K. D. (author) / Olatunji, O. O. (author) / Zwane, M. I. (author) / van Rensburg, N. J. (author) / Madyira, D. M. (author)
2025-01-18
Article (Journal)
Electronic Resource
English
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