Microbial community signature of high-solid content methanogenic ecosystems. - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Journal Articles Bioresource Technology Year : 2013

Microbial community signature of high-solid content methanogenic ecosystems.

Abstract

In this study, changes in bacterial and archaeal communities involved in anaerobic digestion processes operated with high solid contents were investigated. Batch tests were performed within a range of total solids (TS) of 10-35%. Between 10% and 25% TS, high methanogenic activity was observed and no overall specific structure of active bacterial communities was found. At 30% and 35%, methanogenesis was inhibited as a consequence of volatile fatty acids accumulation. Here, a specific bacterial signature was observed with three main dominant bacteria related to Clostridium sp., known for their ability to grow at low pH. Additionally, archaeal community was gradually impacted by TS content. Three archaeal community structures were observed with a gradual shift from Methanobacterium sp. to Methanosarcina sp., according to the TS content. Overall, several species were identified as biomarkers of methanogenesis inhibition, since bacterial and archaeal communities were highly specific at high TS contents.
Fichier principal
Vignette du fichier
OA_Abbassi_et_al_submission_BITE-D-12-02630_BioRTech_R4.pdf (478.35 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-02651563 , version 1 (08-08-2023)

Identifiers

Cite

Amel Abbassi-Guendouz, Eric Trably, Jérôme J. Hamelin, Claire Dumas, Jean-Philippe Steyer, et al.. Microbial community signature of high-solid content methanogenic ecosystems.. Bioresource Technology, 2013, 133, pp.256-262. ⟨10.1016/j.biortech.2013.01.121⟩. ⟨hal-02651563⟩
45 View
25 Download

Altmetric

Share

More