Phototransformation of extracellular polymeric substances in activated sludge and their interaction with microplastics
Shuyin Wei, Feng Zeng, Yingyue Zhou, Jiawei Zhao, Hao Wang, Rui Gao, Weiqian Liang
Abstract
, but negatively correlated with O/C of EPS. This indicates that the main adsorption mechanisms of PSMPs on EPS were π-π and hydrophobicity. The adsorption capacity of S-EPS, LB-EPS and TB-EPS to PSMPs decreased with the increasing of illumination time. After phototransformation, the adsorption sensitivity and reaction sequence of EPS and PSMPs did not change much. This research provides a theoretical basis for understanding the photochemical transformation of extracellular polymers and the morphology and migration of microplastics in sewage treatment, and evaluating the impact of microplastics on ecosystems.
Topics & Concepts
MicroplasticsExtracellular polymeric substanceActivated sludgeChemistryExtracellularWastewaterSewage treatmentEnvironmental chemistryEnvironmental engineeringEnvironmental scienceBiochemistryBiologyBacteriaGeneticsBiofilmMicroplastics and Plastic Pollution