Hydrolysis capacity of different sized granules in a full-scale aerobic granular sludge (AGS) reactor.

ABSTRACT: In aerobic granular sludge (AGS) reactors, granules of different sizes coexist in a single reactor. Their differences in settling behaviour cause stratification in the settled granule bed. In combination with substrate concentration gradients over the reactor height during the anaerobic plug-flow feeding regime, this can result in functional differences between granule sizes. In this study, we compared the hydrolytic activity in granules of 4 size ranges (between 0.5 and 4.8 mm diameter) collected from a full-scale AGS installation. Protease and amylase activities were quantified through fluorescent activity assays. To visualise where the hydrolytic active zones were located within the granules, the hydrolysis sites were visualized microscopically after incubating intact and sliced granule

SUBMITTER: Toja Ortega S 

PROVIDER: S-EPMC9364025 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature