Application of a novel strain Corynebacterium pollutisoli SPH6 to improve nitrogen removal in an anaerobic/aerobic-moving bed biofilm reactor (A/O-MBBR)

Liu, Xuna; Wang, Ling; Pang, Lei

doi:10.1016/j.biortech.2018.08.076

Cited by 46 publications

(8 citation statements)

References 37 publications

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“…The relative abundance of phylotypes, including Streptococcus , Lactococcus , Enterococcus , and Corynebacterium , that are most likely to produce l -LA , is higher in Am-N (42.2%) compared to that in Ctrl (5.3%) and Org-N (12.8%), which is consistent with higher OA of LA in Am-N (Figure ). Especially, Enterococcus and Corynebacterium , dominated in Am-N are capable of surviving in a high ammonium environment. , Note that some LABs have both genes ( ldhL and ldhD ) encoding NADH-dependent l - and d -lactate dehydrogenases ( l -LDH and d -LDH), respectively, responsible for l - and d -lactate generation . Consistent with the observed yields of optically active l -LA (Figure ), the relative abundance of ldhL was much higher in Am-N than that in Ctrl and Org-N reactors, whereas ldhD was lower in Am-N than that in Org-N treatments (Figure b).…”

Section: Resultssupporting

confidence: 73%

“…Especially, Enterococcus and Corynebacterium, dominated in Am-N are capable of surviving in a high ammonium environment. 39,40 Note that some LABs have both genes (ldhL and ldhD) encoding NADH-dependent L-and D-lactate dehydrogenases (L-LDH and D-LDH), respectively, responsible for L-and D-lactate generation. 41 Consistent with the observed yields of optically active L-LA (Figure 1), the relative abundance of ldhL was much higher in Am-N than that in Ctrl and Org-N reactors, whereas ldhD was lower in Am-N than that in Org-N treatments (Figure 3b).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ammonium Enhances Food Waste Fermentation to High-Value Optically Active l-Lactic acid

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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Fermentation of food waste to l-lactic acid (l-LA), a high value-added platform molecule, is a green approach for resource recovery. However, low yield and optical activity (OA) of l-LA are key limiting factors for such efforts. Here, we report that ammonium addition (300 mg of NH4 +-N/L) can double the yield of LA and increase OA of l-LA by fivefold during repeated batch fermentation of food waste. This coincided with a threefold increase in the glycolysis activity and an increase in the relative abundance of key lactic acid bacteria (LAB) genera and the ldhL gene associated with l-LA production. Ammonium addition provided essential nitrogen for LAB growth (47% of 15NH4 +-N underwent assimilation versus 15% oxidized to 15NO3 –-N and 31% to 29N2 and 30N2) and resulted in a stable reducing environment (the oxidation–reduction potential, ORP, ranged from −470 to −320 mV) that favors the reduction of pyruvate to l-lactate. Specifically, the added ammonium promoted beneficial population and metabolic shifts, including an increase in intracellular NADH levels (0.46 ± 0.02 vs 0.26 ± 0.01 mM for unamended controls) that significantly increased the l-LA yield. Overall, this study provides a practical way to enhance l-LA production with high OA during food waste fermentation and highlights ammonium as an overlooked biostimulator for food waste biorefinery.

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Section: Resultssupporting

confidence: 73%

Section: ■ Results and Discussionmentioning

confidence: 99%

Ammonium Enhances Food Waste Fermentation to High-Value Optically Active l-Lactic acid

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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“…Many bioreactor studies have been carried out to assess the ability of aerobic denitrifiers to carry out simultaneous nitrification. Liu et al ( ) reported that Corynebacterium pollutsoli could be used for bioaugmentation in a moving bed bioreactor operated under aerobic conditions for removal of nitrogen (NH 4 + ‐N and NO 3 − ‐N). The bacteria were able to achieve a TN removal rate of 4·9302 mg N mg·cells·h −1 .…”

Section: Role Of Aerobic Denitrifiers In Bioremediationmentioning

confidence: 99%

Role of heterotrophic aerobic denitrifying bacteria in nitrate removal from wastewater

et al. 2020

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With the increase in industrial and agricultural activities, a large amount of nitrogenous compounds are released into the environment, leading to nitrate pollution. The perilous effects of nitrate present in the environment pose a major threat to human and animal health. Bioremediation provides a costeffective and environmental friendly method to deal with this problem. The process of aerobic denitrification can reduce nitrate compounds to harmless dinitrogen gas. This review provides a brief view of the exhaustive role played by aerobic denitrifiers for tackling nitrate pollution under different ecological niches and their dependency on various environmental parameters. It also provides an understanding of the enzymes involved in aerobic denitrification. The role of aerobic denitrification to solve the issues faced by the conventional method (aerobic nitrification-anaerobic denitrification) in treating nitrogenpolluted wastewaters is elaborated. verts the iron centre of haemoglobin from Fe 2+ to Fe 3+ Role of heterotrophic aerobic denitrifying bacteriaA. Rajta et al.

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“…However, some of those abundant genera species (relative abundance of > 1%) appeared in CWs incorporated with Fe–C‐ME compared to CWs incorporated without Fe–C‐ME, such as Pseudomonas , Chryseolinea , Derxia , Roseomonas , Gp 10 , Gp IV , Bacillariophyta , Azoarcus , Psychromarinibacter , Gp IIa and Rubribacterium . For example, some studies showed that Pseudomonas, Azoarcus , Chryseolinea and Psychromarinibacter could essentially improve the microbial community through nitrogen removal and COD reduction (Wang et al 2016a; Liu et al 2018; Fang et al 2019). The results suggested that Fe–C‐ME changed the microbial structure and that some genera can thrive with Fe–C‐ME, which could enhance the performance of CWs.…”

Section: Resultsmentioning

confidence: 99%

Investigating the influence of iron–carbon microelectrolysis on the performance and microbial community of constructed wetlands

Fang

Zhou

et al. 2019

Water & Environment J

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Iron-carbon microelectrolysis (Fe-C-ME) has been used extensively for the treatment of domestic sewage. In this study, CWs incorporated with Fe-C-ME were established, and the performance and microbial community structure of CWs were investigated. The results indicated that CWs incorporated with Fe-C-ME had better performance for treating domestic sewage. The NO 3-N, TN and TP removal efficiencies of CWs incorporated with Fe-C-ME were 82.3, 80.3 and 98.2%, respectively, which were 7.8, 4.7 and 25.2% higher than those of the CWs without Fe-C-ME. High-throughput sequencing analysis demonstrated that Fe-C-ME changed the microbial community structure. For example, some dominant groups at the class level, such as Betaproteobacteria (15.2%), Gammaproteobacteria (10.6%) and Deltaproteobacteria(10.0%), were promoted by Fe-C-ME. The results demonstrated that the relative abundance of bacteria involved in nitrification, denitrification, polyphosphate accumulation or COD reduction at the genus level thrived because of the presence of Fe-C-ME, which can improve the performance of CWs.

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Application of a novel strain Corynebacterium pollutisoli SPH6 to improve nitrogen removal in an anaerobic/aerobic-moving bed biofilm reactor (A/O-MBBR)

Cited by 46 publications

References 37 publications

Ammonium Enhances Food Waste Fermentation to High-Value Optically Active l-Lactic acid

Ammonium Enhances Food Waste Fermentation to High-Value Optically Active l-Lactic acid

Role of heterotrophic aerobic denitrifying bacteria in nitrate removal from wastewater

Investigating the influence of iron–carbon microelectrolysis on the performance and microbial community of constructed wetlands

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