caa a22 4500 465824293 CHVBK 20180323112144.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF00176667 doi (NATIONALLICENCE)springer-10.1007/BF00176667 The influence of organic load on granular sludge development in an acetate-fed system [Elektronische Daten] [László Morvai, Pál Miháltz, Lajos Czakó, Miklós Péterfy, János Holló] Summary: The development of granular sludge in laboratory-scale upflow anaerobic sludge-blanket reactors was studied. Acetate was supplied as sole carbon source in order to select the acetotrophs Methanosarcina and Methanothrix. These microorganisms are dominant in methanogenic ecosystems and their ratio seems to control the speed of granulation. Changing the ratio of the above species was followed on the basis of their different F 420-coenzyme content. Five reactors were operated at the same hydraulic retention time but at different feed substrate concentrations. We found that granulation takes place only in acetate-fed systems but this process was slower and the resultant granules looser and less stable than those developed on sugar-starch substrate. In the range of feed acetate levels examined (0.5−0.3 g/1) higher concentrations of feed caused faster granulation of the sludge bed and, presumably, of the microbial population, and resulted in larger granules containing sludge that settled more readily. We found no evidence for selection pressure at substrate concentrations below 0.5 g/1 acetate in the reactor. Springer-Verlag, 1990 Morvai László Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut Miháltz Pál Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut Czakó Lajos Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut Péterfy Miklós Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut Holló János Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut Applied Microbiology and Biotechnology Springer-Verlag 33/4(1990-07-01), 463-468 0175-7598 33:4<463 1990 33 253 https://doi.org/10.1007/BF00176667 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00176667 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morvai László Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut NATIONALLICENCE 700 1- Miháltz Pál Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut NATIONALLICENCE 700 1- Czakó Lajos Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut NATIONALLICENCE 700 1- Péterfy Miklós Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut NATIONALLICENCE 700 1- Holló János Institute of Agricultural Chemical Technology, Technical University of Budapest, H-1521, Budapest, Gellért 4, Hungary aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer-Verlag 33/4(1990-07-01), 463-468 0175-7598 33:4<463 1990 33 253 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer