Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 407451
Title Effect of substrate feeding on viscosity evolution of anaerobic granular sludges
Author(s) Pevere, A.; Abzac, P. D'; Hullebusch, E.; Lens, P.N.L.; Guibaud, G.
Source Water Science and Technology 62 (2010)1. - ISSN 0273-1223 - p. 132 - 139.
Department(s) Sub-department of Environmental Technology
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) polymeric substances - rheological characterization - extracellular polymers - activated-sludge - uasb reactors - waste-water - wastewaters - extraction - dynamics - biofilms
Abstract This work aims to describe the effect of the feeding regime of anaerobic activity tests on the limit viscosity (mu(lim)) evolution of the granules. Batch experiments were performed with 3 different sources of substrate: acetate, peptone, and glucose. Despite, the substrate origin was shown to affect the mu(lim) evolution of granules, no clear relationship was found between the mu(lim) evolution, type of substrate and other granule physico-chemical characteristics (i.e. pH; % of Volatile Suspended Solid; concentration of exopolymeric substances, divalent cations, P and S). The origin of granules and the substrate feeding regime modify the surface shape of the granules and may change granule-granule interactions under a shear stress, thus affecting the evolution of the v value during long term reactor operation.
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