6533b86efe1ef96bd12cbe68
RESEARCH PRODUCT
Physical properties and Extracellular Polymeric Substances pattern of aerobic granular sludge treating hypersaline wastewater.
Gaspare VivianiSanto Fabio CorsinoMichele TorregrossaMarco Capodicisubject
SalinityEnvironmental Engineering0208 environmental biotechnologyBioengineering02 engineering and technology010501 environmental sciencesSodium ChlorideWastewater01 natural sciencesWaste Disposal FluidProtein contentExtracellular polymeric substanceBiopolymersBioreactorsFood-Processing IndustryWaste Management and Disposal0105 earth and related environmental sciencesSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleSewageRenewable Energy Sustainability and the EnvironmentChemistryGranule (cell biology)General MedicineAerobiosis020801 environmental engineeringSalinityChemical engineeringWastewaterAerobic granular sludge EPS Industrial wastewater Fish-canning wastewater Hypersaline wastewaterGradual increaseHydrophobic and Hydrophilic Interactionsdescription
The modification of the physical properties of aerobic granular sludge treating fish-canning wastewater is discussed in this paper. The structure and composition of the Extracellular Polymeric Substances (EPSs) were analyzed at different salinity levels and related to granules stability. Results outlined that the total EPSs content increased with salinity, despite the EPSs increment was not proportional to the salt concentration. Moreover, the EPSs structure was significantly modified by salinity, leading to a gradual increase of the not-bound EPSs fraction, which was close to the 50% of the total EPSs content at 75 g NaCl L-1. The increasing salt concentration modified also the EPSs composition, causing the gradual reduction of protein content resulting in a decrease of granule hydrophobicity. The results pointed out that the granules stability significantly reduced above 50 g NaCl L-1, suggesting the existence of a salinity threshold above which granules stability is compromised.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-04-01 | Bioresource technology |