| DOI | Resolve DOI: https://doi.org/10.1002/jctb.280530108 |
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| Author | Search for: Guiot, Serge R.1; Search for: Rocheleau, Sylvie1; Search for: Hawari, Jalal1; Search for: Samson, Réjean1 |
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| Affiliation | - National Research Council of Canada. NRC Biotechnology Research Institute
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| Format | Text, Article |
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| Subject | 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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| Abstract | 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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| Publication date | 1992 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21196400 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 9e6b0e5e-f9e4-44bf-b5a0-bd35c01de78b |
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| Record created | 2013-01-16 |
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| Record modified | 2020-04-23 |
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