Influence of substrate concentration and moisture content on the specific methanogenic activity of dry mesophilic municipal solid waste digestate spiked with propionate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Bioresource Technology Année : 2011

Influence of substrate concentration and moisture content on the specific methanogenic activity of dry mesophilic municipal solid waste digestate spiked with propionate

Ronan Le Hyaric
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Caroline Chardin
  • Fonction : Auteur
Julien Bollon
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R. Bayard
Pierre Buffière

Résumé

The objective of this study was to evaluate the influence of substrate concentration and moisture content on the specific methanogenic activity (SMA) of a fresh dry mesophilic digestate from a municipal solid waste digester plant. For this purpose, SMA tests were performed under mesophilic conditions into glass bottles of 500 mL volume used as batch reactors, during a period of 20–25 days. Propionate was used as substrate at concentrations ranging from 1 to 10 gCOD/kg. Four moisture contents were studied: 65%, 75%, 80% and 82%. Experimental results showed that propionate concentration and moisture content strongly influenced the SMA. The highest SMA was observed at a substrate concentration of 10 gCOD/kg (11.3 mgCOD gVS−1 d−1 for the second dose of propionate) and at a moisture content of 82% (7.8 mgCOD gVS−1 d−1 for the second dose of propionate, at a concentration of 5 gCOD/kg). SMA was found to decrease linearly when decreasing the moisture content.
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hal-02043264 , version 1 (20-02-2019)

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  • HAL Id : hal-02043264 , version 1

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Ronan Le Hyaric, Caroline Chardin, Hassen Benbelkacem, Julien Bollon, R. Bayard, et al.. Influence of substrate concentration and moisture content on the specific methanogenic activity of dry mesophilic municipal solid waste digestate spiked with propionate. Bioresource Technology, 2011, 102 (2), pp.822-827. ⟨hal-02043264⟩
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