| DOI | Trouver le DOI : https://doi.org/10.1002/jctb.280530108 |
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| Auteur | Rechercher : Guiot, Serge R.1; Rechercher : Rocheleau, Sylvie1; Rechercher : Hawari, Jalal1; Rechercher : Samson, Réjean1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
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| Format | Texte, Article |
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| Sujet | anaerobic digestion; UASB; NSSC pulping; spent liquor; sulphonated lignin; flocculant; granulation; carbon/nitrogen ratio; protein ratio; Zeta potential; hydrophilic; electron microscopy; specific activity |
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| Résumé | The present study evaluates the capability of sulphonated lignin (S-lignin) and calcium to promote anaerobic sludge granulation, which is of prime importance in the operation of upflow anaerobic sludge bed (UASB) -like reactors. One of two reactors fed with a synthetic sugar waste was stepwise supplemented with a spent liquor rich in S-lignin from a neutral sulphite semi-chemical pulping plant to reach an addition rate of 0.17 g S-lignin per gram volatile suspended solid (VSS) per day. This resulted in biomass pre-granulation (50–60% of the biomass aggregates had a size > 0.3 mm). No change was observed in the surface properties (hydrophobicity and zeta potential) of the bacterial aggregates. The S-lignin-fed sludge aggregated in an ordered and cluster-like manner and exhibited a more compact ultrastructure than the control sludge. Moreover, the addition of S-lignin slightly enhanced the metabolic activities of the biomass. Calcium ion addition following the S-lignin treatment improved the size and the settleability of the aggregates and increased the solid retention time. |
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| Date de publication | 1992 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21196400 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 9e6b0e5e-f9e4-44bf-b5a0-bd35c01de78b |
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| Enregistrement créé | 2013-01-16 |
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| Enregistrement modifié | 2020-04-23 |
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