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Simultaneous removal of ammonia nitrogen, calcium and cadmium in a biofilm reactor based on microbial-induced calcium precipitation: Optimization of conditions, mechanism and community biological response.
Liu, Yu; Li, Jiawei; Su, Junfeng; Li, Xue; Li, Xuan.
Afiliación
  • Liu Y; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China. Electronic address: 1356697028@qq.com.
  • Li J; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China. Electronic address: 958090142@qq.com.
  • Su J; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China. Electronic address: sjf1977518@sina.com.
  • Li X; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China. Electronic address: 734394328@qq.com.
  • Li X; College of Environmental Science & Engineering, Yancheng Institute of Technology, Yancheng, 224051, China. Electronic address: lix_lixuan@163.com.
J Environ Manage ; 358: 120912, 2024 May.
Article en En | MEDLINE | ID: mdl-38636417
ABSTRACT
With the enhancement of environmental governance regulations, the discharge requirements for reverse osmosis wastewater have become increasingly stringent. This study proposes an innovative approach utilizing heterotrophic nitrification and aerobic denitrification (HNAD)-based biomineralization technology, combined with coconut palm silk loaded biochar, to offer a novel solution for resource-efficient and eco-friendly treatment of reverse osmosis wastewater. Zobellella denitrificans sp. LX16 were loaded onto modified coir silk and showed removal efficiencies of up to 97.38, 94.58, 86.24, and 100% for NH4+-N (65 mg L-1), COD (900 mg L-1), Ca2+ (180 mg L-1), and Cd2+ (25 mg L-1). Analysis of the metabolites of microorganisms reveals that coconut palm silk loaded with deciduous biochar (BCPS) not only exerts a protective effect on microorganisms, but also enhances their growth, metabolism, and electron transfer capabilities. Characterization of precipitation phenomena elucidated the mechanism of Cd2+ removal via ion exchange, precipitation, and adsorption. Employing high-throughput and KEGG functional analyses has confirmed the biota environmental response strategies and the identification of key genes like HNAD.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cadmio / Calcio / Biopelículas / Reactores Biológicos / Amoníaco / Nitrógeno Idioma: En Revista: J Environ Manage 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: Cadmio / Calcio / Biopelículas / Reactores Biológicos / Amoníaco / Nitrógeno Idioma: En Revista: J Environ Manage Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido