| Title | Effect of feeding regime and the sludge age on the fate of acetate and the microbial composition in sequencing batch reactor. |
| Abstract | The study investigated the effects of the feeding regime on the substrate metabolism under aerobic conditions. Throughout the study, two parallel sequencing batch reactors were operated using either short-term (pulse) or long-term (almost continuous) feeding of acetate at two different sludge ages of two days and eight days. The microbial characterization studies showed that the feeding regime did not change the microbial composition as determined by the fluorescent in situ hybridization (FISH) analysis, however did strongly affect the substrate utilization mechanism. Additionally, the same microbial culture was able to utilize acetate with or without poly-?-hydroxybutyrate (PHB) storage under pulse or continuous feeding, respectively. Conversely, the selected sludge ages induced significant changes in the microbial composition and floc structure, however, the well settling and bulking biomass selected at the sludge ages of eight days and two days, respectively, did not significantly affect the substrate utilization mechanism, where storage or growth prevailed as a result of either pulse or continuous feeding |
| Source | Journal of environmental science and health. Part B. Pesticides, food contaminants, and agricultural wastes 47 (2), pp. 192–203 |
| Journal | Journal of environmental science and health. Part B. Pesticides, food contaminants, and agricultural wastes |
| Editor | Taylor & Francis,, Philadelphia, PA,, Stati Uniti d'America |
| Year | 2012 |
| Type | Articolo in rivista |
| Authors | Ciggin AS, Rossetti S, Majone M, Orhon D. |
| Text | 209682 2012 Effect of feeding regime and the sludge age on the fate of acetate and the microbial composition in sequencing batch reactor. Ciggin AS, Rossetti S, Majone M, Orhon D. Faculty of Civil Engineering, Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey Water Research Institute, IRSA CNR Via Salaria km 29,300 00015 Monterotondo RM , Italy The study investigated the effects of the feeding regime on the substrate metabolism under aerobic conditions. Throughout the study, two parallel sequencing batch reactors were operated using either short term pulse or long term almost continuous feeding of acetate at two different sludge ages of two days and eight days. The microbial characterization studies showed that the feeding regime did not change the microbial composition as determined by the fluorescent in situ hybridization FISH analysis, however did strongly affect the substrate utilization mechanism. Additionally, the same microbial culture was able to utilize acetate with or without poly hydroxybutyrate PHB storage under pulse or continuous feeding, respectively. Conversely, the selected sludge ages induced significant changes in the microbial composition and floc structure, however, the well settling and bulking biomass selected at the sludge ages of eight days and two days, respectively, did not significantly affect the substrate utilization mechanism, where storage or growth prevailed as a result of either pulse or continuous feeding 47 Articolo in rivista Taylor Francis, 0360 1234 Journal of environmental science and health. Part B. Pesticides, food contaminants, and agricultural wastes Journal of environmental science and health. Part B. Pesticides, food contaminants, and agricultural wastes J. environ. sci. health, Part B, Pestic. food contam. agric. wastes Journal of environmental science and health Pesticides, food contaminants, and agricultural wastes simona.rossetti ROSSETTI SIMONA |
