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Enhanced denitrification of biodegradable polymers using Bacillus pumilus in aerobic denitrification bioreactors: Performance and mechanism.
Zhang, Xiangyu; Song, Xiefa; Cheng, Xiaojing; Huang, Zhitao; Dong, Dengpan; Li, Xian.
Afiliación
  • Zhang X; Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao, Shandong Province 266003, China.
  • Song X; Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao, Shandong Province 266003, China.
  • Cheng X; Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao, Shandong Province 266003, China.
  • Huang Z; Norwegian Institute for Water Research (NIVA), Thormøhlengate 53 D, 5006 Bergen, Norway.
  • Dong D; Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao, Shandong Province 266003, China.
  • Li X; Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao, Shandong Province 266003, China. Electronic address: lixian@ouc.edu.cn.
Bioresour Technol ; 394: 130240, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38160849
ABSTRACT
Nitrate accumulation is an important issue that affects animal health and causes eutrophication. This study combined biodegradable polymers with degrading bacteria to lead to high denitrification efficiency. The results showed polycaprolactone had the highest degradation and carbon release rate (0.214 mg/g∙d) and nitrogen removal was greatest when the Bacillus pumilus and Halomonas venusta ratio was 12. When the hydraulic retention time was extended to 12 h, the nitrate removal rate for H. venusta with B. pumilus and polycaprolactone increased by 48 %. Furthermore, the group with B. pumilus contained more Proteobacteria (77.34 %) and denitrifying functional enzymes than the group without B. pumilus. These findings indicated B.pumilus can enhance the degradation of biodegradable polymers especially polycaprolactone to improve the denitrification of the aerobic denitrification bacteria H.venusta when treating maricultural wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Desnitrificación / Bacillus pumilus Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Desnitrificación / Bacillus pumilus Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido