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Algal-mediated nitrogen removal and sustainability of algal-derived dissolved organic matter supporting denitrification.
Wan, Huiqin; Wang, Kangpeng; Luo, Xianxin; Zhang, Chao; Deng, Kai; Lin, Shusen; Xie, Jingming; Luo, Qi; Lei, Xu; Ding, Lin.
Afiliación
  • Wan H; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Wang K; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Luo X; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China. Electronic address: luoxianxin@nchu.edu.cn.
  • Zhang C; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Deng K; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Lin S; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Xie J; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Luo Q; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Lei X; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
  • Ding L; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
Bioresour Technol ; 407: 131083, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38972430
ABSTRACT
Algae-mediated nitrogen removal from low carbon vs. nitrogen (C/N) wastewater techniques has garnered significant attention due to its superior autotrophic assimilation properties. This study investigated the ammonium-N removal potential of four algae species from low C/N synthetic wastewater. Results showed that 95 % and 99 % of ammonium-N are eliminated at initial concentrations of 11.05 ± 0.98 mg/L and 42.51 ± 2.20 mg/L with little nitrate and nitrite accumulation. The compositions of secreted algal-derived dissolved organic matter varied as C/N decreased and showed better bioavailability for nitrate-N removal by Pseudomonas sp. SZF15 without pre-oxidation, achieving an efficiency of 99 %. High-throughput sequencing revealed that the aquatic microbial communities, dominated by Scenedesmus, Kalenjinia, and Micractinium, remain relatively stable across different C/N, aligning with the underlying metabolic pathways. These findings may provide valuable insights into the sustainable elimination of multiple nitrogen contaminants from low C/N wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Desnitrificación / Aguas Residuales / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Desnitrificación / Aguas Residuales / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido