Lag Phase in the Anaerobic Co-Digestion of Sargassum spp. and Organic Domestic Waste

Héctor Alfredo López-Aguilar, Bryan Morales-Durán, David Quiroz-Cardoza and Antonino Pérez-Hernández ()
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Héctor Alfredo López-Aguilar: Departamento de Ingenierías, Ingeniería en Energías Alternativas, Universidad La Salle de Chihuahua, Chihuahua 31020, Mexico
Bryan Morales-Durán: Departamento de Ingenierías, Ingeniería en Energías Alternativas, Universidad La Salle de Chihuahua, Chihuahua 31020, Mexico
David Quiroz-Cardoza: Departamento de Metalurgia e Integridad Estructural, Centro de Investigación en Materiales Avanzados S. C., Chihuahua 31136, Mexico
Antonino Pérez-Hernández: Departamento de Metalurgia e Integridad Estructural, Centro de Investigación en Materiales Avanzados S. C., Chihuahua 31136, Mexico

Energies, 2023, vol. 16, issue 14, 1-15

Abstract: The mass arrival of pelagic sargassum is an international issue that is currently taking its toll on the economic activity of affected regions by causing a significant reduction in investment and tourism. The purpose of this work was to evaluate the Logistic Modified and Gompertz Modified sigmoid kinetic models for describing the lag phase in the generation of biomethane. The case studies were: anaerobic co-digestion (ACoD) of Sargassum spp./domestic organic waste and Sargassum spp. in mono-digestion. The experimental method, based on biochemical methane potential (BMP), enabled kinetic models to be built for methane production under environmental conditions and an estimate to be made for the duration of the lag phase. The maximum cumulative production determined for monodigestion was 140.7 cm 3 of CH 4 /g SV at 99 days, and for ACoD, it was 161.3 cm 3 of CH 4 /g SV at 172 days. The lag phase was determined to be approximately 7 days and 93 days, respectively. It was concluded that the modified sigmoid growth functions are a valuable tool for studying the start-up and scaling of systems for the ACoD of organic waste. The results present the ACoD of coastal pelagic sargassum algae and domestic organic waste as a potential alternative energy source.

Keywords: biogas; biomethane; ACoD; logistic; Gompertz; kinectic models; BMP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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