Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Carotenuto, Claudia; Guarino, Giovanna; Minale, Mario; Morrone, Biagio

doi:10.18280/ijht.340411

Cited by 11 publications

(8 citation statements)

References 21 publications

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“…In the first 5-7 d, values around 52-55% were achieved, and at the end of the experiments concentrations higher than 60% were observed, which is within the normal percentage range of production by an anaerobic digestion process at equilibrium (Campuzano and Gonzalez-Martinez, 2016;Esteban et al, 2014). This same trend was also observed in the anaerobic digestion of other organic wastes under different operative conditions (Carotenuto et al, 2016).…”

Section: Ch4 and Co2 Composition In The Biogas During The Anaerobic Co-digestion Of Ofmsw And Lfhtc Of Dsssupporting

confidence: 79%

Mesophilic anaerobic co-digestion of the organic fraction of municipal solid waste with the liquid fraction from hydrothermal carbonization of sewage sludge

et al. 2018

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In the present study, the influence of substrate pre-treatment (grinding and sieving) on batch anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) was first assessed, then followed by co-digestion experiments with the liquid fraction from hydrothermal carbonization (LFHTC) of dewatered sewage sludge (DSS). The methane yield of batch anaerobic digestion after grinding and sieving (20 mm diameter) the OFMSW was considerably higher (453 mL CH STP g VS) than that of untreated OFMSW (285 mL CH STP g VS). The modified Gompertz model adequately predicted process performance. The maximum methane production rate, R, for ground and sieved OFMSW was 2.4 times higher than that of untreated OFMSW. The anaerobic co-digestion of different mixtures of OFMSW and LFHTC of DSS did not increase the methane yield above that of the anaerobic digestion of OFMSW alone, and no synergistic effects were observed. However, the co-digestion of both wastes at a ratio of 75% OFMSW-25% LFHTC provides a practical waste management option. The experimental results were adequately fitted to a first-order kinetic model showing a kinetic constant virtually independent of the percentage of LFHTC (0.52-0.56 d) and decreasing slightly for 100% LFHTC (0.44 d).

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Section: Ch4 and Co2 Composition In The Biogas During The Anaerobic Co-digestion Of Ofmsw And Lfhtc Of Dsssupporting

confidence: 79%

Mesophilic anaerobic co-digestion of the organic fraction of municipal solid waste with the liquid fraction from hydrothermal carbonization of sewage sludge

et al. 2018

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“…One of the most promising options is the use of OPW as a substrate for methane production through the anaerobic digestion process [5][6][7][8][9][10][11][12][13][14][15][16]. This is a biochemical process which consists in the decomposition of complex organic substances, contained in the biomass, into a gas, basically composed of methane and carbon dioxide, and used as a biofuel.…”

mentioning

confidence: 99%

Biomethane production tests on ensiled orange peel waste

Calabrò¹,

Panzera²

2017

IJHT

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“…Moreover, it is assumed to be an isothermal and adiabatic unit, since the AD works mostly at the same temperature, established by weather conditions and biomass stability [14]. The adiabatic assumption simplifies the equilibrium study, being the heat transfer phenomena not the objective of this work.…”

Section: Model Assumptions and Schematisationmentioning

confidence: 99%

Thermodynamic Equilibrium Study of Anaerobic Digestion through Helmholtz Equation of State

2023

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The growing attention regarding a more sustainable future, and thus into energy recovery and waste reduction technologies, has intensified the interest towards processes which allow to exploit waste and biomasses to generate energy, such as the anaerobic digestion. Improving the efficiency of this industrial application is crucial to increase methane production, and is essential from the economic, environmental and safety point of view. This study focuses on the thermodynamic modelling of a steady-state reactor as a flash unit, in order to determine the best operating conditions to produce the maximum amount of pure bio-methane. To this purpose, a new hybrid approach based on the Peng–Robinson cubic equation of state and on the Multi-Parameter Helmholtz-Energy EoS has been proposed. The simulations, performed using the developed algorithm at temperatures between 20 and 55 °C and at pressure values between 0.3 atm and 1.5 atm, point out that the fugacity of the mixture evaluated with the proposed technique is much more accurate and reliable than the one calculated with the PR EoS. In addition, this research has shown not only that the purity and the production of the biogas can be optimised by working at mesophilic conditions and at pressure between 1 atm and 1.5 atm, but also that it is not convenient to operate in a temperature range of 42 °C–45 °C, since about 20 % more H2S goes into the exiting biogas, reducing the CH4 amount and raising the post-treatment costs. Lastly, it has been seen that there is a significant water content in the vapour phase (∼5 %wt.), and this is a factor to be taken into account in order to improve the process.

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Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Cited by 11 publications

References 21 publications

Mesophilic anaerobic co-digestion of the organic fraction of municipal solid waste with the liquid fraction from hydrothermal carbonization of sewage sludge

Mesophilic anaerobic co-digestion of the organic fraction of municipal solid waste with the liquid fraction from hydrothermal carbonization of sewage sludge

Biomethane production tests on ensiled orange peel waste

Thermodynamic Equilibrium Study of Anaerobic Digestion through Helmholtz Equation of State

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