16 research outputs found

    El Barbero de Sevilla

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    De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que s贸n diferents.Direcci贸 art铆stica Empresa Juan Mestres CalvetInt猫rprets : Toti dal Monte ; Carlo Galeffi ; Emilio Renzi ; Augusto Beuf脪pera de Gioachino Rossin

    Rigoletto

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    De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que s贸n diferents.Direcci贸 art铆stica Empresa Juan Mestres CalvetInt猫rprets : Maria Espinalt ; Carlo Galeffi ; Also Sinnone脪pera de Giuseppe Verd

    Electricity generation of bacterial communities using microbial fuel cells

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    Electricity generation of bacterial communities using microbial fuel cells. 11. Convegno FISV 200

    L鈥檜tilizzo di Microbial Fuel Cells (MFCs) nel processo di mineralizzazione della sostanza organica per la produzione di energia elettrica

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    L鈥檜tilizzo di Microbial Fuel Cells (MFCs) nel processo di mineralizzazione della sostanza organica per la produzione di energia elettric

    Alteration of bacterial communities and organic matter in microbial fuel cells (MFCs) supplied with soil and organic fertilizer

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    International audienceThe alteration of the organic matter (OM) and the composition of bacterial community in microbial fuel cells (MFCs) supplied with soil (S) and a composted organic fertilizer (A) was examined at the beginning and at the end of 3 weeks of incubation under current-producing as well as no-current-producing conditions. Denaturing gradient gel electrophoresis revealed a significant alteration of the microbial community structure in MFCs generating electricity as compared with no-current-producing MFCs. The genetic diversity of cultivable bacterial communities was assessed by random amplified polymorphic DNA (RAPD) analysis of 106 bacterial isolates obtained by using both generic and elective media. Sequencing of the 16S rRNA genes of the more representative RAPD groups indicated that over 50.4% of the isolates from MFCs fed with S were Proteobacteria, 25.1% Firmicutes, and 24.5% Actinobacteria, whereas in MFCs supplied with A 100% of the dominant species belonged to gamma-Proteobacteria. The chemical analysis performed by fractioning the OM and using thermal analysis showed that the amount of total organic carbon contained in the soluble phase of the electrochemically active chambers significantly decreased as compared to the no-current-producing systems, whereas the OM of the solid phase became more humified and aromatic along with electricity generation, suggesting a significant stimulation of a humification process of the OM. These findings demonstrated that electroactive bacteria are commonly present in aerobic organic substrates such as soil or a fertilizer and that MFCs could represent a powerful tool for exploring the mineralization and humification processes of the soil OM
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