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Eliminación simultánea de sulfadiazina y nanopartículas de óxido de cobre coexistentes con un humedal artificial-pila

Lianfang Zhao¹, Qi Zeng¹, Chao Li¹

¹Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Bioresource technology

|January 27, 2026

Abstract:

The persistence of antibiotics and nanoparticles in aquatic ecosystems poses a significant threat and complicates their removal, a challenge exacerbated by their coexistence. To address this issue, constructed wetland-microbial fuel cell (CW-MFC) systems were established not only to investigate the impact of sulfadiazine (SDZ) and copper oxide nanoparticles (CuO NPs) coexistence on system performance but, more importantly, to reveal removal mechanisms. Co-exposure suppressed chemical oxygen demand (COD) and nitrogen removal in the CW-MFC by 18.1% and 18.8%, respectively. The extracellular polymeric substances (EPS) concentration at the cathode of the CW-MFC co-exposed to SDZ and CuO NPs reached 423.10 mg g^-1, enhancing Cu accumulation. Through spatial migration and separation, the CW-MFC achieved high removal efficiencies of 93.8% for SDZ and 94.9% for Cu, with spatial accumulation (51.6% of SDZ at the anode and 33.9% of Cu at the cathode). This "Simultaneous Separation-Removal" process in CW-MFC provides valuable insights into dual-contaminant treatment.

Palabras clave:

Humedales artificiales Nanopartículas de CuO Pila de combustible microbiana Sulfadiazina

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