Effect of moisture on disintegration kinetics during anaerobic digestion of complex organic substrates

Flavia Liotta 1 G. d'Antonio Giovanni Esposito 2 M. Fabbricino Luigi Frunzo Eric D. van Hullebusch 1 P. Lens 3 Francesco Pirozzi
1 LGE - Laboratoire Géomatériaux et Environnement
2 University of Cassino and the Southern Lazio, Department of Civil and Mechanical Engineering
3 Department of Environmental Resources
Abstract : The role of the moisture content and particle size (PS) on the disintegration of complex organic matter during the wet anaerobic digestion (AD) process was investigated. A range of total solids (TS) from 5% to 11.3% and PS from 0.25 to 15 mm was evaluated using carrot waste as model complex organic matter. The experimental results showed that the methane production rate decreased with higher TS and PS. A modified version of the AD model no.1 for complex organic substrates was used to model the experimental data. The simulations showed a decrease of the disintegration rate constants with increasing TS and PS. The results of the biomethanation tests were used to calibrate and validate the applied model. In particular, the values of the disintegration constant for various TS and PS were determined. The simulations showed good agreement between the numerical and observed data.
Keywords : Anaerobic digestion wet digestion moisture content mathematical modelling particle size ADM1
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Journal articles
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https://hal-upec-upem.archives-ouvertes.fr/hal-01066473
Contributor : Eric van Hullebusch <>
Submitted on : Saturday, September 20, 2014 - 3:33:19 PM
Last modification on : Wednesday, February 26, 2020 - 7:06:12 PM

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Flavia Liotta, G. d'Antonio, Giovanni Esposito, M. Fabbricino, Luigi Frunzo, et al.. Effect of moisture on disintegration kinetics during anaerobic digestion of complex organic substrates. Waste Management and Research, SAGE Publications, 2014, 32 (-), pp.40-48. ⟨10.1177/0734242X13513827⟩. ⟨hal-01066473⟩

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