Results 21 to 30 of about 9,690 (195)

Syngas as Electron Donor for Sulfate and Thiosulfate Reducing Haloalkaliphilic Microorganisms in a Gas-Lift Bioreactor

open access: yesMicroorganisms, 2020
Biodesulfurization processes remove toxic and corrosive hydrogen sulfide from gas streams (e.g., natural gas, biogas, or syngas). To improve the efficiency of these processes under haloalkaline conditions, a sulfate and thiosulfate reduction step can be ...
Caroline M. Plugge   +6 more
doaj   +1 more source

Is reduced ferredoxin the physiological electron donor for MetVF-type methylenetetrahydrofolate reductases in acetogenesis? A hypothesis

open access: yesInternational Microbiology, 2021
The methylene-tetrahydrofolate reductase (MTHFR) is a key enzyme in acetogenic CO 2 fixation. The MetVF-type enzyme has been purified from four different species and the physiological electron donor was hypothesized to be reduced ferredoxin.
Christian Öppinger   +2 more
semanticscholar   +2 more sources

Obligate autotrophy at the thermodynamic limit of life in a new acetogenic bacterium

open access: yesFrontiers in Microbiology, 2023
One of the important current issues of bioenergetics is the establishment of the thermodynamic limits of life. There is still no final understanding of what is the minimum value of the energy yield of a reaction that is sufficient to be used by an ...
Evgenii N. Frolov   +6 more
doaj   +1 more source

A Third Way of Energy Conservation in Acetogenic Bacteria

open access: yesMicrobiology Spectrum, 2022
Acetogenic bacteria are a group of strictly anaerobic bacteria that make a living from acetate formation from two molecules of CO2 via the Wood-Ljungdahl pathway (WLP).
Florian Kremp   +2 more
doaj   +1 more source

Relating Anaerobic Digestion Microbial Community and Process Function [PDF]

open access: yes, 2016
Anaerobic digestion (AD) involves a consortium of microorganisms that convert substrates into biogas containing methane for renewable energy. The technology has suffered from the perception of being periodically unstable due to limited understanding of ...
Bocher, Benjamin T.W.   +3 more
core   +3 more sources

Exploring Acetogenesis in Firmicutes: From Phylogenetic Analysis to Solid Medium Cultivation with Solid-Phase Electrochemical Isolation Equipments

open access: yesMicroorganisms, 2023
This study introduces a groundbreaking approach for the exploration and utilization of electrotrophic acetogens, essential for advancing microbial electrosynthesis systems (MES).
Z. Kimura, Hiroki Kuriyama, Yuki Iwasaki
semanticscholar   +1 more source

Anaerobic digestion of donkey dung for biogas production

open access: yesSouth African Journal of Science, 2016
Biogas can provide a solution to some of South Africa’s energy needs, especially in rural areas of Eastern Cape Province that have plentiful biogas substrates from donkeys, goats, sheep, cattle and chicken.
Patrick Mukumba   +2 more
doaj   +1 more source

Extracellular Electron Uptake by Acetogenic Bacteria: Does H2 Consumption Favor the H2 Evolution Reaction on a Cathode or Metallic Iron?

open access: yesFrontiers in Microbiology, 2020
Some acetogenic bacteria are capable of using solid electron donors, such as a cathode or metallic iron [Fe(0)]. Acetogens using a cathode as electron donor are of interest for novel applications such as microbial electrosynthesis, while microorganisms ...
Jo Philips
doaj   +1 more source

Effect of Humin and Chemical Factors on CO2-Fixing Acetogenesis and Methanogenesis

open access: yesInternational Journal of Environmental Research and Public Health, 2022
Acetogenesis and methanogenesis have attracted attention as CO2-fixing reactions. Humin, a humic substance insoluble at any pH, has been found to assist CO2-fixing acetogenesis as the sole electron donor.
Biec Nhu Ha   +4 more
semanticscholar   +1 more source

Electron carriers involved in autotrophic and heterotrophic acetogenesis in the thermophilic bacterium Thermoanaerobacter kivui

open access: yesExtremophiles, 2021
Thermoanaerobacter kivui is an acetogenic model organism that reduces CO 2 with electrons derived from H 2 or CO, or from organic substrates in the Wood–Ljugdahl pathway (WLP).
Alexander Katsyv   +3 more
semanticscholar   +2 more sources

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