1. Insights into roles of triclosan in microalgal-bacterial symbiosis system treating wastewater.
- Author
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Tang CC, Wang TY, Wang R, Varrone C, Gan Z, He ZW, Li ZH, and Wang XC
- Subjects
- Wastewater, Symbiosis, Bacteria, Triclosan, Microalgae
- Abstract
Triclosan (TCS) is an antimicrobial agent and frequently detected in wastewater or water body. This study investigated the role of TCS in microalgal-bacterial symbiosis (MABS) system treating wastewater. The results showed that the removal efficiencies of NH
4 + -N, total nitrogen, and total phosphorus decreased under increased TCS stress, with decrease ratios of 26.5%, 16.9%, and 34.7%. The activities of microalgae were more affected than that of bacteria. The secretion of extracellular polymeric substances (EPSs) and activity of superoxide dismutase firstly increased and then decreased with aggravated TCS stress, while the accumulation of malondialdehyde increased, leading to increased permeability of cytomembrane and bioaccumulation of TCS. In addition, the aggregation properties of microalgae and bacteria were enhanced with TCS loading increasing, and the migration of TCS was affected by enhanced EPSs secretions and MABS aggregates. This work may provide some new insights into the roles of TCS in MABS system., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2023
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