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author：

Qin, L. (Qin, L..) [1] | Lin, Z. (Lin, Z..) [2] | Kong, W. (Kong, W..) [3] | Xu, Y. (Xu, Y..) [4] | Xie, J. (Xie, J..) [5] | Chen, S. (Chen, S..) [6] | Xiong, J. (Xiong, J..) [7] | Wang, Y. (Wang, Y..) [8] | Zhu, H. (Zhu, H..) [9] | Wang, S. (Wang, S..) [10]

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Scopus

Abstract：

The　emerging　antibiotics　in　mariculture　wastewater　has　challenged　conventional　biological　treatment　processes,　but　the　impact　of　sulfamethoxazole　(SMX)　on　saline　microalgal-bacterial　symbiotic　systems　and　the　underlying　microbial　response　mechanisms　remain　unclear.　This　study　investigated　the　resilience　of　a　microalgal-bacterial　symbiotic　moving　bed　biofilm　reactor　(MBS-MBBR)　treating　saline　wastewater　under　SMX　stress,　focusing　on　nitrogen　removal　performance,　microbial　physiological　activities,　and　ecological　interactions.　The　ammonia　removal　efficiency　remained　stable　(＞99.0%)　at　0.1–1　mg/L　SMX　but　decreased　to　62.3%　at　5　mg/L　SMX.　Elevated　SMX　inhibited　microbial　respiration,　but　enhanced　extracellular　polymer　substances　synthesis　and　intracellular　antioxidant　activities.　Microbial　community　analysis　revealed　that　0.1–1　mg/L　SMX　promoted　the　enrichment　of　denitrifer　(Denitromonas),　while　5　mg/L　SMX　suppressed　nitrifiers　(Nitrosomonas,　Nitrospira).　SMX　exhibited　differential　impacts　to　distinct　nitrogen　metabolic　functions.　Furthermore,　microalgal-bacterial　consortia　exhibited　enhanced　cooperative　interactions　under　SMX　stress.　This　study　provides　theoretical　support　to　stabilize　engineering　mariculture　wastewater　treatment　processes.　©　2025　Elsevier　Ltd

Keyword：

Antibiotic stress Antioxidant system Mariculture wastewater treatment Microalgal-bacterial symbiosis Nitrogen metabolism

Community：

  • [ 1 ] [Qin L.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 2 ] [Lin Z.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 3 ] [Lin Z.]Guangxi Key Laboratory of Emerging Contaminants Monitoring, Early Warning and Environmental Health Risk Assessment, Guangxi University, Nanning, 530004, China
  • [ 4 ] [Kong W.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 5 ] [Xu Y.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 6 ] [Xie J.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 7 ] [Chen S.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 8 ] [Xiong J.]School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
  • [ 9 ] [Xiong J.]Guangxi Key Laboratory of Emerging Contaminants Monitoring, Early Warning and Environmental Health Risk Assessment, Guangxi University, Nanning, 530004, China
  • [ 10 ] [Wang Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 11 ] [Zhu H.]School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
  • [ 12 ] [Wang S.]School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China

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Source ：

Bioresource Technology

ISSN： 0960-8524

Year： 2025

Volume： 436

9 . 7 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 4

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