PMID- 24875310 OWN - NLM STAT- MEDLINE DCOM- 20150812 LR - 20181202 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 22 IP - 10 DP - 2015 May TI - Microbial diversity in innovative mesophilic/thermophilic temperature-phased anaerobic digestion of sludge. PG - 7339-48 LID - 10.1007/s11356-014-3061-y [doi] AB - Anaerobic digestion (AD) is one of the few sustainable technologies that both produce energy and treat waste streams. Driven by a complex and diverse community of microbes, AD may be affected by different factors, many of which also influence the composition and activity of the microbial community. In this study, the biodiversity of microbial populations in innovative mesophilic/thermophilic temperature-phased AD of sludge was evaluated by means of fluorescence in situ hybridization (FISH). The increase of digestion temperature drastically affected the microbial composition and selected specialized biomass. Hydrogenotrophic Methanobacteriales and the protein fermentative bacterium Coprothermobacter spp. were identified in the thermophilic anaerobic biomass. Shannon-Weaver diversity (H') and evenness (E) indices were calculated using FISH data. Species richness was lower under thermophilic conditions compared with the values estimated in mesophilic samples, and it was flanked by similar trend of the evenness indicating that thermophilic communities may be therefore more susceptible to sudden changes and less prompt to adapting to operative variations. FAU - Gagliano, M C AU - Gagliano MC AD - Water Research Institute, IRSA-CNR, Via Salaria km 29,300, Monterotondo, RM, 00015, Italy. FAU - Braguglia, C M AU - Braguglia CM FAU - Gallipoli, A AU - Gallipoli A FAU - Gianico, A AU - Gianico A FAU - Rossetti, S AU - Rossetti S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140531 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Sewage) SB - IM MH - Anaerobiosis MH - Bacteria/genetics/growth & development/isolation & purification/*metabolism MH - Biodegradation, Environmental MH - *Biodiversity MH - Biomass MH - Bioreactors/microbiology MH - In Situ Hybridization, Fluorescence MH - Sewage/*microbiology MH - Temperature EDAT- 2014/05/31 06:00 MHDA- 2015/08/13 06:00 CRDT- 2014/05/31 06:00 PHST- 2014/03/07 00:00 [received] PHST- 2014/05/19 00:00 [accepted] PHST- 2014/05/31 06:00 [entrez] PHST- 2014/05/31 06:00 [pubmed] PHST- 2015/08/13 06:00 [medline] AID - 10.1007/s11356-014-3061-y [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2015 May;22(10):7339-48. doi: 10.1007/s11356-014-3061-y. Epub 2014 May 31.