Effects of Copper and PQQ on the Denitrification Activities of Microorganisms Facilitating Nitrite- and Nitrate-Dependent DAMO Reaction

Hatamoto, Masashi; Nemoto, Sho; Yamaguchi, Takashi

doi:10.1007/s41742-018-0118-7

Cited by 12 publications

(3 citation statements)

References 21 publications

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“…Metals are essential for microbial activity and growth, aerobic methanotrophs and anaerobic Methylomirabilis bacteria are not an exception, requiring copper for the catalytic activity of the pMMO enzyme (Bollinger, 2010;Ho et al, 2013b;Semrau et al, 2018). Recent studies provide direct evidence of the effect of copper on methane oxidation by Methylomirabilis bacteria, in laboratory enrichments a concentration of 5-6 micromolar of copper salt in the trace elements, triggered an increase in methane oxidation rates (Hatamoto et al, 2018). Furthermore, higher concentrations of copper and other metals seem to enable higher enrichment ratio of these difficult to cultivate bacteria (Guerrero-Cruz et al, 2019).…”

Section: Metals and N-daommentioning

confidence: 99%

“…(ii) Studies to optimize fundamental aspects of growth and enrichment conditions are lacking. Currently, evidence on the role of iron, copper, and lanthanide is available (Hatamoto et al, 2018;Lu et al, 2018;Guerrero-Cruz et al, 2019); however, further studies on the requirements of these micronutrients, including up-scaling and modeling aspects in large-scale applications, are still lacking. The availability of these metals could improve the activity, growth, competitiveness, and enable the application of N-dAOM microorganisms in oxygen-limited WWT systems.…”

Section: Methane Supply and Reactor Configurationmentioning

confidence: 99%

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Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications

et al. 2021

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Methane is the final product of the anaerobic decomposition of organic matter. The conversion of organic matter to methane (methanogenesis) as a mechanism for energy conservation is exclusively attributed to the archaeal domain. Methane is oxidized by methanotrophic microorganisms using oxygen or alternative terminal electron acceptors. Aerobic methanotrophic bacteria belong to the phyla Proteobacteria and Verrucomicrobia, while anaerobic methane oxidation is also mediated by more recently discovered anaerobic methanotrophs with representatives in both the bacteria and the archaea domains. The anaerobic oxidation of methane is coupled to the reduction of nitrate, nitrite, iron, manganese, sulfate, and organic electron acceptors (e.g., humic substances) as terminal electron acceptors. This review highlights the relevance of methanotrophy in natural and anthropogenically influenced ecosystems, emphasizing the environmental conditions, distribution, function, co-existence, interactions, and the availability of electron acceptors that likely play a key role in regulating their function. A systematic overview of key aspects of ecology, physiology, metabolism, and genomics is crucial to understand the contribution of methanotrophs in the mitigation of methane efflux to the atmosphere. We give significance to the processes under microaerophilic and anaerobic conditions for both aerobic and anaerobic methane oxidizers. In the context of anthropogenically influenced ecosystems, we emphasize the current and potential future applications of methanotrophs from two different angles, namely methane mitigation in wastewater treatment through the application of anaerobic methanotrophs, and the biotechnological applications of aerobic methanotrophs in resource recovery from methane waste streams. Finally, we identify knowledge gaps that may lead to opportunities to harness further the biotechnological benefits of methanotrophs in methane mitigation and for the production of valuable bioproducts enabling a bio-based and circular economy.

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Section: Metals and N-daommentioning

confidence: 99%

Section: Methane Supply and Reactor Configurationmentioning

confidence: 99%

Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications

et al. 2021

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“…It was also reported that the DAMO activity was obviously stimulated by the nucleobase and betaine (Wang et al, 2019). Supplementation of basal medium with PQQ is also an effective strategy for the enrichment DAMO-bacteria (Hatamoto et al, 2018).…”

Section: Saccharibacteriamentioning

confidence: 96%

The main anammox-based processes, the involved microbes and the novel process concept from the application perspective

Guo

Luo

Shen

et al. 2021

Front. Environ. Sci. Eng.

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Anammox technology has been widely researched over the past 40-year from the laboratory-scale to full-scale. It is well-known that in actual applications, the solo application of anammox is not feasible. Since both ammonium and nitrite are prerequisites based on the reaction mechanism, the pre-treatment of wastewater is necessary. With the combination of anammox process and other pre-treatment processes to treat the actual wastewater, many types of anammox-based processes have been developed with distinct nitrogen removal performance. Thus, in order to heighten the awareness of researchers to the developments and accelerate the application of these processes to the treatment of actual wastewater, the main anammox-based processes are reviewed in this paper. It includes the partial nitritation/anammox process, the denitratation/anammox (PD/A) process, the denitrifying anaerobic methane oxidation/anammox (DAMO/A) process, and more complex deuterogenic processes. These processes have made the breakthroughs in the application of the anammox technology, such as the combination of nitrification and PD/A process can achieve stability and reliability of nitrogen removal in the treatment of mainstream wastewater, the PD/A process and the DAMO/A have brought about further improvements in the total nitrogen removal efficiency of wastewater. The diversity of functional microbe characteristics under the specific condition indicate the wide application potential of anammox-based processes, and further exploration is necessary. A whole waste treatment system concept is proposed through the effective allocation of above mentioned processes, with the maximum recovery of energy and resources, and minimal environmental impact.

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Methanotrophic bacterial biorefineries: resource recovery and GHG mitigation through the production of bacterial biopolymers

Guerrero-Cruz

Pijuan

2022

Clean Energy and Resource Recovery

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Effects of Copper and PQQ on the Denitrification Activities of Microorganisms Facilitating Nitrite- and Nitrate-Dependent DAMO Reaction

Cited by 12 publications

References 21 publications

Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications

Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications

The main anammox-based processes, the involved microbes and the novel process concept from the application perspective

Methanotrophic bacterial biorefineries: resource recovery and GHG mitigation through the production of bacterial biopolymers

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