A comparative study on the chronic responses of titanium dioxide nanoparticles on aerobic granular sludge and algal-bacterial granular sludge processes.

ABSTRACT: The chronic effects of titanium dioxide nanoparticles (TiO₂ NPs) on aerobic granular sludge (AGS) and algal-bacterial granular sludge (ABGS) was examined in this study. Sequencing batch bioreactors (SBRs) and photo sequencing batch bioreactors (PSBRs) were operated with synthetic wastewater containing 0, 1, 5, 10, 20, 30, and 50 mg L^-1 TiO₂ NPs for 10 days. Nanoparticles at concentrations of 1 and 5 mg L^-1 did not impact nutrient removal but led to an increase in extracellular polymeric substances (EPSs), primarily in protein (PN). With increasing nanoparticle concentration, the negative effect became more pronounced, mainly in the AGS SBRs. At 50 mg L^-1 TiO₂, chemical oxygen demand (COD), ammonia-nitrogen (NH₃-N)

SUBMITTER: Kedves A 

PROVIDER: S-EPMC12804245 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature