Evaluation of methane generation and process stability from anaerobic co-digestion of sugar beet by-product and cow manure

Aboudi, Kaoutar; Álvarez-Gallego, Carlos José; Romero, L.I.

doi:10.1016/j.jbiosc.2015.10.005

Cited by 32 publications

(26 citation statements)

References 39 publications

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“…Barredo and Evison [44] have indicated that concentrations of propionic acid higher than 1500-2220 mg/L could lead to inhibition. However, in the mesophilic AcoD of ESBP and PM, concentrations of HPr in the range 1099-5500 mg/L were observed and the system was not inhibited [35]. as a substrate in the AD process [4].…”

Section: Process Stabilitymentioning

confidence: 97%

“…Angeriz-Campoy et al [34] have used the indirect parameter ASC and have corroborated that the failure in the AcoD of organic fraction of municipal solid waste and sewage sludge, was due to a distortion in the hydrolytic phase. Aboudi et al [35] have used the indirect parameters to analyze the AcoD of exhausted sugar beet pulp and cow manure, in the mesophilic range of temperature as well.…”

Section: Indirect Parametersmentioning

confidence: 99%

“…According to the literature, when the HPr/HAc ratio exceeds 1.4, the destabilization of the process occurs [42]. However, other studies have determined that the threshold value of this relationship depends on the characteristics of the substrates used in co-digestion [35,43]. Figure 3c shows the evolution of the HPr/HAc ratio in In this work, the maximum concentrations of propionic acid detected were: 125.42 mg/L, 277.02 mg/L, 447.75 mg/L, 972.88 mg/L, and 1401.26 mg/L for the mixtures 0:100, 10:90, 25:75, 50:50, and 100:0, respectively.…”

Section: Process Stabilitymentioning

confidence: 99%

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Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

et al. 2019

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In this paper, the viability of thermophilic anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and pig manure (PM) was evaluated. The effect of the proportion of ESBP on biogas production was investigated by using a series of lab-scale batch assays, in duplicates. The following five ESBP:PM mixture ratios were studied: 0:100, 10:90, 25:75, 50:50, and 100:0. The highest cumulative methane production (212.4 mL CH4/g VSadded) was reached for the mixture 25:75. The experimental results showed that the increase in the proportion of ESBP in the mixture led to the distortion of the process, due to acidification by the volatile fatty acids generated. Acetic acid was the predominant acid in all the cases, representing more than 78% of the total acidity. Moreover, the results obtained by operating at thermophilic temperatures have been compared with those obtained in a previous study conducted at mesophilic temperatures. The results have shown that in the individual digestion of ESBP, the activity of acetoclastic methanogens was affected in both temperatures, but especially in thermophilic conditions. Thus, the methane produced in the individual thermophilic digestion of ESBP came almost entirely from the activity of hydrogen-utilizing methanogenic archaea.

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Section: Process Stabilitymentioning

confidence: 97%

Section: Indirect Parametersmentioning

confidence: 99%

Section: Process Stabilitymentioning

confidence: 99%

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Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

et al. 2019

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“…Em outras condições de operação, Aboudi et al (2016), também avaliaram a co-digestão de DS, mas desta vez em conjunto com resíduos de beterrraba sacarina (RBS). Posto isso, verificaram que foi possível uma Co-DA na proporção de 50:50 de DS:RBS com uma produção de 560,1 L CH4 kg SV -1 , o que remeteu a um aproveitamento de 25,5% em relação ao processo empregando apenas DS (447,1 L CH4 kg SV -1 ).…”

Section: Daunclassified

Co-Digestão Anaeróbica De Dejetos De Animais E Resíduos Lignocelulósicos: Uma Revisão Do Potencial De Produção De Metano / Anaerobic Co-Digestion of Animal Waste and Lignocellulosic Residues: A Review of Methane Production Potential

Dupont

Della‐Flora

Clerici

et al. 2020

BJD

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“…According to the mass balance in the formation of the VFA, a differential equation of constant coefficients of first order (14) is obtained: From this equation, the accumulated methane production is obtained as…”

Section: Two-step Reaction With First-order Kineticsmentioning

confidence: 99%

Review of Mathematical Models for the Anaerobic Digestion Process

Velázquez‐Martí¹,

Quelal²,

Gaibor‐Chávez³

et al. 2019

Anaerobic Digestion

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To describe anaerobic fermentation, many mathematical models have been suggested. A commonly accepted hypothesis in microbial growth is the speed of cellular reproduction, which is proportional to the concentration of cells at that instant. The constant of proportionality between the speed of growth and cell concentration is called cell growth rate, μ. In many occasions, the cell growth rate is considered constant. This leads to conclude that the concentration of cells versus time presents an exponential function. The consideration of this equation provides a good adjustment in the beginning of central phase of the anaerobic fermentation process. However, it moves away from the measurements when there is a limited reproduction due to lack of nutrients and competition between the cells in the environment. This produces a sigmoidal variation in concentration. To find a suitable fit function for all phases of the process, Gompertz proposes a model that considers the cell growth rate as variable. In this chapter, the Gompertz model, kinetic models, transference, and cone models are evaluated. Different adaptations to fit the variables to the obtained values in the experiments have been reviewed.

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Evaluation of methane generation and process stability from anaerobic co-digestion of sugar beet by-product and cow manure

Cited by 32 publications

References 39 publications

Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

Co-Digestão Anaeróbica De Dejetos De Animais E Resíduos Lignocelulósicos: Uma Revisão Do Potencial De Produção De Metano / Anaerobic Co-Digestion of Animal Waste and Lignocellulosic Residues: A Review of Methane Production Potential

Review of Mathematical Models for the Anaerobic Digestion Process

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