Mathematical Models for Estimating Methane Production in Covered Lagoon Biodigesters Treating Pig Manure

Lopes, Juciara Oliveira; Rosa, André Pereira; Sousa, Izabelle de Paula; Oliveira, Nathalia Silva; Borges, Alisson Carraro

doi:10.1590/1809-4430-eng.agric.v41n4p438-448/2021

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Mathematical modeling of the AcoD process is required to forecast the effect of two or more organic matter mix ratio, organic loading levels, the method for choice of the substrate, output estimation, production optimization, process failure prevention, and instabilities. A comprehensive description of the bio-conversion mechanism is provided with numerous dynamic models [70][71][72]. In this study, the Modi ed Gompertz model, Modi ed Logistic model, and First-order models were used.…”

Section: Kinetic Studymentioning

confidence: 99%

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Jakki

Ahammed

Parsai

2022

Preprint

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Recently waste to energy projects gaining more attraction due to rapid waste generation due to increased urbanization. Improper municipal solid waste (MSW) treatment resulting in environmental risks such as air pollution, ground, and surface water contamination. Anaerobic digestion (AD) is the best method to treat organic solid waste. Mono-AD of organic fraction of municipal solid wastes (OFMSW) leads to lower methane yield due to the accumulation of volatile fatty acids (VFAs). Mixing of two or more substrates (Co-digestion) dilutes the toxic compounds and increases the methane yield by providing proper environment for microbes. In this study anaerobic co-digestion (AcoD) of source segregated OFMSW (particularly food waste, fruit waste, and vegetable waste) with chicken fecal matter (co-substrate), and cow dung (inoculum) was investigated by using batch studies (Duration of 30 days). AcoD carried out in three different batch reactors viz. R1 (food mix), R2 (vegetable mix), and R3 (fruit mix) feed with substrates (S1& S2) and inoculum (I) (S1: S2: I = 0.5:0.5:2). The methane percentage obtained for reactor R1 was 69.60%, which is higher compared to the other reactors (R2- 61.2%, and R3- 57.37%). R1 reactor had higher methane yield due to its higher lipids (higher VFAs), and proteins (sufficient buffer capacity). R3 reactor had lowest methane yield due to its highest carbohydrates (rapid acidification), and lower proteins (lower buffer capacity). Modified Gompertz model gave better results near to experimental studies. The present study proved that mixing OFMSW with proper co-substrate (protein-rich) increases the methane yield by providing proper buffer capacity.

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Section: Kinetic Studymentioning

confidence: 99%

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Jakki

Ahammed

Parsai

2022

Preprint

View full text Add to dashboard Cite

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Circular bioeconomy of coffee industries: Energy and techno-economic approach based on biogas and biomethane production

Velásquez-Piñas

Ampese

Ziero

et al. 2023

Journal of Cleaner Production

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Decoding Anaerobic Digestion: A Holistic Analysis of Biomass Waste Technology, Process Kinetics, and Operational Variables

et al. 2023

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The continual generation and discharge of waste are currently considered two of the main environmental problems worldwide. There are several waste management options that can be applied, though anaerobic digestion (AD) process technology seems to be one of the best, most reliable, and feasible technological options that have attracted remarkable attention due to its benefits, including the generation of renewable energy in the form of biogas and biomethane. There is a large amount of literature available on AD; however, with the continuous, progressive, and innovative technological development and implementation, as well as the inclusion of increasingly complex systems, it is necessary to update current knowledge on AD process technologies, process variables and their role on AD performance, and the kinetic models that are most commonly used to describe the process-reaction kinetics. This paper, therefore, reviewed the AD process technologies for treating or processing organic biomass waste with regard to its classification, the mechanisms involved in the process, process variables that affect the performance, and the process kinetics. Gazing into the future, research studies on reduced MS-AD operational cost, integrated or hybrid AD-biorefinery technology, integrated or hybrid AD-thermochemical process, novel thermochemical reactor development, nutrient recovery from integrated AD-thermochemical process, and solid and liquid residual disposal techniques are more likely to receive increased attention for AD process technology of biomass wastes.

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Mathematical Models for Estimating Methane Production in Covered Lagoon Biodigesters Treating Pig Manure

Cited by 3 publications

References 22 publications

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Circular bioeconomy of coffee industries: Energy and techno-economic approach based on biogas and biomethane production

Decoding Anaerobic Digestion: A Holistic Analysis of Biomass Waste Technology, Process Kinetics, and Operational Variables

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