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摘要 ：
The role of fungi in aerobic granular sludge remains unknown. This study explored the formation and instability of halophilic aerobic granular sludge (HAGS) induced by fungi in a continuous flow reactor (CFR) figured with an aeration tank and a two-zone sedimentation tank. HAGS with a particle size of 420.10 +/- 1.13 mu m was successfully cultivated by increased hydraulic shear force (HSF). Increasing HSF stimulated microorganisms such as unclassified_f_Rhodobacteraceae, Muricauda, and Raineyella to secrete more extracellular polymeric substances (EPS) with a high protein (PN) content (81.03 +/- 2.65 %). The peeled filamentous fungal fragments could act as colonization carriers to connect microorganisms. The mature HAGS had excellent removal efficiency of chemical oxygen demand (COD; 96.20 +/- 1.19 %) and ammonia (92.13 +/- 5.36 %) from 20 g/L saline wastewater. However, HAGS was disintegrated due to the fast growth of fungi, mainly unclassified_f_Nectriaceae, resulting in the deterioration of the sludge settling performance (SVI5 = 499.05 +/- 7.80 mL/g). Filamentous fungi can use EPS secreted by bacteria under anaerobic and aerobic conditions. The excess EPS consumption finally destroyed the EPS and bacteria network. This study revealed the role of fungi in the formation and instability of HAGS in CFR, providing the basis for maintaining long-term HAGS stability.
关键词 ：
Extracellular polymeric substance Extracellular polymeric substance Continuous flow reactor Continuous flow reactor Halophilic aerobic granular sludge Halophilic aerobic granular sludge Filamentous fungi Filamentous fungi Saline wastewater Saline wastewater
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| GB/T 7714 | Liang, Hui -Kai , Cui, You -Wei , Yan, Jin-Lei et al. The role of fungi in the formation and instability of halophilic aerobic granular sludge in a continuous flow reactor [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 59 . |
| MLA | Liang, Hui -Kai et al. "The role of fungi in the formation and instability of halophilic aerobic granular sludge in a continuous flow reactor" . | JOURNAL OF WATER PROCESS ENGINEERING 59 (2024) . |
| APA | Liang, Hui -Kai , Cui, You -Wei , Yan, Jin-Lei , Yan, Hui -Juan , Li, Zhen-Ying , Cui, Yu -Bo . The role of fungi in the formation and instability of halophilic aerobic granular sludge in a continuous flow reactor . | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 59 . |
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摘要 ：
Fungi capable of simultaneous nitrogen and phosphorus removal from wastewater is rarely found. Here, a novel fungal strain (SNDM1) performing heterotrophic nitrification, aerobic denitrification, and phosphate removal was isolated and identified as Mucor circinelloides. . The favorable nutrient removal conditions by the strain using glucose were C/N ratios of 25-30, salinities of 0 %-3 %, and pH of 7.5. Strain SNDM1 achieved ammonium, nitrite, nitrate, and phosphate removal rates of 5.23, 10.08, 4.88, and 0.97 mg/L/h. Nitrogen balance indicated that gaseous (18.60 %-24.55 %) and intracellular nitrogen (43.76 %-70.63 %) were primary fate of initial nitrogen. Enzyme activity revealed that ammonium removal occurred through heterotrophic nitrification and aerobic denitrification. Removed phosphorus was mainly transformed into cell membranes (56 %-64 %) and extracellular polymeric substances (20 %-26 %). Orthophosphate was the major intracellular phosphorus species, while polyphosphate and pyrophosphate existed extracellularly. These findings highlight the potential of this fungal strain for bioremediating polluted wastewater.
关键词 ：
Aerobic phosphorus removal Aerobic phosphorus removal denitrification denitrification Mucor circinelloides Mucor circinelloides removal removal Heterotrophic nitrification and aerobic Heterotrophic nitrification and aerobic Simultaneous nitrogen and phosphorus Simultaneous nitrogen and phosphorus Nitrogen removal pathway Nitrogen removal pathway
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| GB/T 7714 | Xu, Meng-Jiao , Cui, You-Wei . Simultaneous aerobic nitrogen and phosphorus removal by novel halotolerant fungus Mucor circinelloides SNDM1: Function and metabolism pathway [J]. | BIORESOURCE TECHNOLOGY , 2024 , 410 . |
| MLA | Xu, Meng-Jiao et al. "Simultaneous aerobic nitrogen and phosphorus removal by novel halotolerant fungus Mucor circinelloides SNDM1: Function and metabolism pathway" . | BIORESOURCE TECHNOLOGY 410 (2024) . |
| APA | Xu, Meng-Jiao , Cui, You-Wei . Simultaneous aerobic nitrogen and phosphorus removal by novel halotolerant fungus Mucor circinelloides SNDM1: Function and metabolism pathway . | BIORESOURCE TECHNOLOGY , 2024 , 410 . |
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摘要 ：
Structural disintegration caused by the overgrowth of filamentous microorganisms is a major threat to the stable operation of aerobic granular sludge (AGS). In this study, the overgrowth of filamentous fungi was observed for the first time in halophilic aerobic granular sludge (HAGS) following reactivation after 250 days of refrigeration storage. The dominant filamentous fungi genera, with a relative abundance of 98.3 +/- 0.2 %, were affiliated to the family Nectriaceae (unclassified_f_Nectriaceae). Originally existing in the HAGS nuclei, these filamentous fungi extended their hypha from the core to the surface of the HAGS during reactivation in the wastewater treatment system. The filamentous fungi could degrade extracellular polymeric substances produced by bacteria, as well as the organic matter in saline wastewater, under both anaerobic and aerobic conditions. These characteristics help the fungi maintain the growth advantage when bacteria in the HAGS were inhibited under the low temperature and anaerobic conditions. Under the aerobic condition, fungal growth was further promoted due to their broad carbon utilization and facultative respiration capacities, exerting a strong competitive advantage against halophilic bacteria, such as Marinobacterium, Halomonas and Vibrio. This study is the first to find and reveal the overgrowth of filamentous fungi in HAGS, providing a basis to regulate fungal growth and maintain the structural stability of HAGS.
关键词 ：
Species succession Species succession Halophilic aerobic granular sludge Halophilic aerobic granular sludge Microbial interaction Microbial interaction Filamentous fungi Filamentous fungi Structural disintegration Structural disintegration
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| GB/T 7714 | Huang, Ji-Lin , Cui, You-Wei , Chen, Chen . Overgrowth of filamentous fungi in halophilic activated granule sludge reactivated after refrigeration: Insights into bacterial-fungal interactions [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 482 . |
| MLA | Huang, Ji-Lin et al. "Overgrowth of filamentous fungi in halophilic activated granule sludge reactivated after refrigeration: Insights into bacterial-fungal interactions" . | CHEMICAL ENGINEERING JOURNAL 482 (2024) . |
| APA | Huang, Ji-Lin , Cui, You-Wei , Chen, Chen . Overgrowth of filamentous fungi in halophilic activated granule sludge reactivated after refrigeration: Insights into bacterial-fungal interactions . | CHEMICAL ENGINEERING JOURNAL , 2024 , 482 . |
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摘要 ：
The treatment of epichlorohydrin (ECH) wastewater exists chances for achieving cleaner production. This study initially employed moderately halophilic aerobic granular sludge (HAGS) to treat ECH wastewater, and the resulting HAGS was utilized to recover polyhydroxyalkanoate (PHA). During the acclimation process of HAGS, the chemical oxygen demand removal efficiency stabilized at 70 %. Moreover, due to the high enrichment of Halomonas sp. (relative abundance of 86 +/- 0.50 %), the maximum PHA content of wasted HAGS was 52.67 wt% in the fermentation process. Simultaneously, the utilization of nuclear magnetic resonance spectroscopy (1H and 13C spectra) and fourier transform infrared spectroscopy for the structural analysis of polymers revealed that polyhydroxybutyrate was the predominant substance extracted from HAGS. In this study, the innovative use of highly enriched HAGS for treating ECH wastewater and simultaneously recovering PHA not only enables the efficient biological treatment of ECH wastewater but also realizes resource recovery of ECH wastewater.
关键词 ：
High enrichment of Halomonas sp. High enrichment of Halomonas sp. Moderately halophilic aerobic granular sludge Moderately halophilic aerobic granular sludge Wastewater treatment Wastewater treatment Polyhydroxyalkanoate (PHA) Polyhydroxyalkanoate (PHA) Glycogen Glycogen
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| GB/T 7714 | Wang, Ling , Cui, You -Wei . Simultaneous treatment of epichlorohydrin wastewater and polyhydroxyalkanoate recovery by halophilic aerobic granular sludge highly enriched by Halomonas sp. [J]. | BIORESOURCE TECHNOLOGY , 2024 , 391 . |
| MLA | Wang, Ling et al. "Simultaneous treatment of epichlorohydrin wastewater and polyhydroxyalkanoate recovery by halophilic aerobic granular sludge highly enriched by Halomonas sp." . | BIORESOURCE TECHNOLOGY 391 (2024) . |
| APA | Wang, Ling , Cui, You -Wei . Simultaneous treatment of epichlorohydrin wastewater and polyhydroxyalkanoate recovery by halophilic aerobic granular sludge highly enriched by Halomonas sp. . | BIORESOURCE TECHNOLOGY , 2024 , 391 . |
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摘要 ：
Versatile metabolic bacteria with simultaneous nitrification-denitrification and phosphate removal (SNDPR) capabilities are promising to reduce the wastewater treatment process from a multi-unit system to a single unit system. Due to the limited study, the metabolic potential and mechanisms of nitrogen (N) and phosphate (P) removal for any SNDPR bacteria remain unknown. In this study, genomic analysis revealed various genes were present in an SNDPR isolate, Pseudomonas aeruginosa SNDPR-01, establishing diverse N- and P -metabolism potential, such as aerobic and anoxic denitrification; dissimilatory nitrate reduction to ammonia; polyphosphate (polyP) metabolism; and utilization of organic P. Phylogenetic analysis predicted that key functional genes related N and P metabolism may co-evolve with chromosomal genes, except for the norB gene, which may originate from horizontal gene transfer. Transcriptomic analysis revealed a partial nitrification and denitrification pathway (NH4+ -> NO2- -> NO -> N2O -> N2) to aerobically remove N without the involvement of conventional amoA, hao and napA genes. Unknown genes were confirmed to mediate the oxidation of ammonium to nitrite. Excellent P removal ability was aided by the synthesis of adenosine triphosphate (ATP) and polyP. The formed polyP was utilized under aerobic conditions without accumulation, which is different from traditional polyP accumulation organisms in wastewater treatment plants (WWTPs). This study will deepen the roles of SNDPR bacteria in aerobic ecological niches and enhance their application in WWTPs.
关键词 ：
phosphate removal (SNDPR) phosphate removal (SNDPR) Transcriptomic analysis Transcriptomic analysis Simultaneous nitrification -denitrification and Simultaneous nitrification -denitrification and Polyphosphate metabolism Polyphosphate metabolism Genomic analysis Genomic analysis Metabolic potential and mechanism Metabolic potential and mechanism
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| GB/T 7714 | Huang, Mei-Qi , Cui, You-Wei . Simultaneous aerobic nitrogen and phosphate removal by Pseudomonas aeruginosa SNDPR-01: Comprehensive insights on metabolic potential and mechanisms [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 481 . |
| MLA | Huang, Mei-Qi et al. "Simultaneous aerobic nitrogen and phosphate removal by Pseudomonas aeruginosa SNDPR-01: Comprehensive insights on metabolic potential and mechanisms" . | CHEMICAL ENGINEERING JOURNAL 481 (2024) . |
| APA | Huang, Mei-Qi , Cui, You-Wei . Simultaneous aerobic nitrogen and phosphate removal by Pseudomonas aeruginosa SNDPR-01: Comprehensive insights on metabolic potential and mechanisms . | CHEMICAL ENGINEERING JOURNAL , 2024 , 481 . |
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摘要 ：
Polyhydroxyalkanoates (PHA) recovery from industrial wastewater has been highlighted as a promising strategy for a circular bioeconomy. However, the high and varying level of nitrogen in wastewater makes enrichment of mixed microbial culture (MMC) low efficiency. In this study, spatial separation of nitrifiers and denitrifiers was adopted by adding biocarriers in MMC and decreasing the sludge retention time (SRT) to accelerate the enrichment of PHA-storing MMC fed by mixed wastewater containing glycerol and propionate. Nitrifiers and denitrifiers were sustained on biocarriers, obtaining a high total inorganic nitrogen removal and allowing a more efficient selective pressure of a high carbon and nitrogen ratio (C/N) under low SRT conditions. The maximum PHA cell content and relative abundance of PHA-storing bacteria were increased to 60.51 % (SRT 6 d) and 49.62 % (SRT 6 d) with the decrease of SRT, respectively. This study demonstrates an efficient way to highly enrich PHA-storing MMC from crude glycerol, which provide a relevant technical support for high-efficiency enrichment of PHA-storing bacteria in low C/N wastewater.
关键词 ：
Biofilm Biofilm Crude glycerol waste Crude glycerol waste Enrichment of PHA -storing bacteria Enrichment of PHA -storing bacteria
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| GB/T 7714 | Lu, Pan -Pan , Cui, You -Wei , Yang, Hou-Jian et al. Spatial separation of nitrifiers and denitrifiers promotes selection and enrichment of polyhydroxyalkanoates storing mixed cultures fed by crude glycerol and propionate wastewater [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 259 . |
| MLA | Lu, Pan -Pan et al. "Spatial separation of nitrifiers and denitrifiers promotes selection and enrichment of polyhydroxyalkanoates storing mixed cultures fed by crude glycerol and propionate wastewater" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 259 (2024) . |
| APA | Lu, Pan -Pan , Cui, You -Wei , Yang, Hou-Jian , Cui, Yubo , Chen, Zhaobo . Spatial separation of nitrifiers and denitrifiers promotes selection and enrichment of polyhydroxyalkanoates storing mixed cultures fed by crude glycerol and propionate wastewater . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 259 . |
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摘要 ：
本发明提供了一种基于遥感反演的河流有机碳通量监测方法及系统，涉及河流生态系统碳通量监测技术领域，所述方法包括：通过遥感影像反演河流的有机碳浓度；对所述河流的断面流量进行实测；根据所述河流的有机碳浓度和所述河流的断面流量的实测结果计算所述河流的有机碳通量。本发明能够使河流碳通量计算过程周期短、耗费低、高效且满足大流域多点位的计算需求，进而能够科学、便捷、准确的对河流碳通量进行监测，可大范围及反演计算过去河流碳通量情况，解决传统人工现场采样及实验室检测分析带来的周期长、耗费高及适用范围小等问题。
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| GB/T 7714 | 王旭 , 崔有为 , 王永刚 . 一种基于遥感反演的河流有机碳通量监测方法及系统 : CN202310071589.3[P]. | 2023-02-07 . |
| MLA | 王旭 et al. "一种基于遥感反演的河流有机碳通量监测方法及系统" : CN202310071589.3. | 2023-02-07 . |
| APA | 王旭 , 崔有为 , 王永刚 . 一种基于遥感反演的河流有机碳通量监测方法及系统 : CN202310071589.3. | 2023-02-07 . |
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摘要 ：
Hypersaline organic wastewater is characterized as being nitrogen-deficient, and is easily prone to sludge bulking. In this study, the stability of halophilic aerobic granular sludge (HAGS) for the treatment of hypersaline organic wastewater is explored. Along with the decrease of influent ammonium, the bacterial population substantially reduced, whereas the fungal population continuously increased in HAGS. Saccharomycetales in fungi become the dominant sequence (99.78%) in HAGS bulking. Additionally, Halanaerobium (77.47%) remained prevalent in HAGS despite bacterial washout. Halanaerobium, a nitrogen-fixing genus of bacteria, provided nitrogen for ammonium-assimilating fungi. Saccharomycetales encapsulating HAGS reduced the transfer efficiency of dissolved oxygen, thereby creating favorable growth conditions for Halanaerobium. This paper for the first time highlights the mutualistic symbiosis of fungi and bacteria in HAGS treating the hypersaline organic wastewater. The study lays the foundation for the control and recovery of HAGS bulking.
关键词 ：
Filamentous fungi Filamentous fungi Moderately halophiles Moderately halophiles Ecology relationship Ecology relationship Wastewater treatment Wastewater treatment Nitrogen fixation bacteria Nitrogen fixation bacteria
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| GB/T 7714 | Wang, Ling , Cui, You-Wei . Mutualistic symbiosis of fungi and nitrogen-fixing bacteria in halophilic aerobic granular sludge treating nitrogen-deficient hypersaline organic wastewater [J]. | BIORESOURCE TECHNOLOGY , 2023 , 394 . |
| MLA | Wang, Ling et al. "Mutualistic symbiosis of fungi and nitrogen-fixing bacteria in halophilic aerobic granular sludge treating nitrogen-deficient hypersaline organic wastewater" . | BIORESOURCE TECHNOLOGY 394 (2023) . |
| APA | Wang, Ling , Cui, You-Wei . Mutualistic symbiosis of fungi and nitrogen-fixing bacteria in halophilic aerobic granular sludge treating nitrogen-deficient hypersaline organic wastewater . | BIORESOURCE TECHNOLOGY , 2023 , 394 . |
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摘要 ：
Fungi with multiple contaminant removal function have rarely been studied. Here, a novel fungal strain Fusarium keratoplasticum FSP1, which was isolated from halophilic granular sludge, is reported for first time to perform simultaneous nitrogen and phosphate removal. The strain showed wide adaptability under C/N ratios of 30-35, salinities of 0 %-3 % (m/v), and pH of 7.5-9.5. The maximum removal rates of ammonium, nitrate and nitrite were 4.43, 4.01 and 2.97 mg N/L/h. The nitrogen balance, enzyme activity and substrate conversion experiments demonstrated a single strain FSP1 can assimilate inorganic nitrogen and convert inorganic nitrogen to gaseous nitrogen through heterotrophic nitrification or aerobic denitrification. About 39 %-42 % of the degraded phosphorus was in the extracellular polymeric substances (EPS). Orthophosphate was the main phosphorus species in the cell, whereas phosphate monoester and diester were in the EPS. The novel strain FSP1 is a potential candidate for wastewater treatment.
关键词 ：
Heterotrophic nitrification Heterotrophic nitrification Simultaneous nitrogen and phosphate removal Simultaneous nitrogen and phosphate removal Aerobic phosphate removal Aerobic phosphate removal Aerobic denitrification Aerobic denitrification Domestic wastewater Domestic wastewater
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| GB/T 7714 | Xu, Meng-Jiao , Cui, You-Wei , Huang, Mei-Qi et al. Simultaneous inorganic nitrogen and phosphate removal by aerobic-heterotrophic fungus Fusarium keratoplasticum FSP1: Performance, pathway and application [J]. | BIORESOURCE TECHNOLOGY , 2023 , 393 . |
| MLA | Xu, Meng-Jiao et al. "Simultaneous inorganic nitrogen and phosphate removal by aerobic-heterotrophic fungus Fusarium keratoplasticum FSP1: Performance, pathway and application" . | BIORESOURCE TECHNOLOGY 393 (2023) . |
| APA | Xu, Meng-Jiao , Cui, You-Wei , Huang, Mei-Qi , Sui, Yuan . Simultaneous inorganic nitrogen and phosphate removal by aerobic-heterotrophic fungus Fusarium keratoplasticum FSP1: Performance, pathway and application . | BIORESOURCE TECHNOLOGY , 2023 , 393 . |
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摘要 ：
Fungi have been found to exist in activated sludge treating saline wastewater, but their role in removing pollution has been neglected. This study explored the aerobic removal of total inorganic nitrogen (TIN) from saline wastewater under static magnetic fields (SMFs) with several strengths. Compared to the control, the aerobic removal of TIN was significantly increased by 1.47 times in 50 mT SMF, due to the increased dissimi-lation nitrogen removal by fungi and bacteria. Under SMF, fungal nitrogen dissimilation removal was signifi-cantly increased by 3.65 times. The fungal population size decreased, and its community composition changed significantly under SMF. In contrast, bacterial community composition and population remained relatively stable. Under SMFs, heterotrophic nitrification -aerobic denitrification bacteria Paracoccus and the fungi deni-trifying Candida formed a synergistic interaction. This study elucidates the fungal role in aerobic TIN removal and provides an efficient solution to improve TIN removal from saline wastewater by SMF.
关键词 ：
Aerobic nitrogen removal Aerobic nitrogen removal Static magnetic field Static magnetic field Fungi-bacteria coexisting Fungi-bacteria coexisting Saline wastewater Saline wastewater Nitrogen dissimilation removal Nitrogen dissimilation removal
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| GB/T 7714 | Chen, Jun , Cui, You -Wei , Huang, Mei-Qi et al. Static magnetic field increases aerobic nitrogen removal from hypersaline wastewater in activated sludge with coexistence of fungi and bacteria [J]. | BIORESOURCE TECHNOLOGY , 2023 , 382 . |
| MLA | Chen, Jun et al. "Static magnetic field increases aerobic nitrogen removal from hypersaline wastewater in activated sludge with coexistence of fungi and bacteria" . | BIORESOURCE TECHNOLOGY 382 (2023) . |
| APA | Chen, Jun , Cui, You -Wei , Huang, Mei-Qi , Yan, Hui-Juan , Li, Dong . Static magnetic field increases aerobic nitrogen removal from hypersaline wastewater in activated sludge with coexistence of fungi and bacteria . | BIORESOURCE TECHNOLOGY , 2023 , 382 . |
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