6533b82ffe1ef96bd1294819
RESEARCH PRODUCT
Fate of aerobic granular sludge in the long-term: The role of EPSs on the clogging of granular sludge porosity
Santo Fabio CorsinoGaspare VivianiMarco CapodiciMichele Torregrossasubject
Porosity cloggingEnvironmental EngineeringPolymers0208 environmental biotechnology02 engineering and technology010501 environmental sciencesManagement Monitoring Policy and Law01 natural sciencesWater PurificationCloggingBioreactorsExtracellular polymeric substanceBreakageExtracellular polymeric substances (EPSs)BiomassLong-term stabilityPorosityWaste Management and DisposalShort durationAerobic granular sludge; Extracellular polymeric substances (EPSs); Feast/famine; Long-term stability; Porosity clogging; Environmental Engineering; Waste Management and Disposal; Management Monitoring Policy and Law0105 earth and related environmental sciencesBacteriaSewageSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleChemistryEnvironmental engineeringGeneral MedicineLimitingPulp and paper industryAerobiosis020801 environmental engineeringFeast/famineAerobic granular sludgePorositydescription
This work aims to investigate the stability of aerobic granular sludge in the long term, focusing on the clogging of the granular sludge porosity exerted by the extracellular polymeric substances (EPSs). The effects of different cycle lengths (short and long-term cycle) on the granular sludge stability were investigated. Results obtained outlined that during the short duration cycle, the formation and breakage of the aerobic granules were continuously observed. During this period, the excess of EPS production contributed to the clogging of the granules porosity, causing their breakage in the long run. During the long-duration cycle, the extended famine period entailed a greater EPSs consumption by bacteria, thus limiting the clogging of the porosity, and allowed obtaining stable aerobic granules. Reported results demonstrated that an excess in EPSs content could be detrimental to the stability of aerobic granular sludge in the long-term.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |