Results 61 to 70 of about 3,891 (199)

Microbiomes in Soils Exposed to Naturally High Concentrations of CO2 (Bossoleto Mofette Tuscany, Italy)

open access: yesFrontiers in Microbiology, 2019
Direct and indirect effects of extremely high geogenic CO2 levels, commonly occurring in volcanic and hydrothermal environments, on biogeochemical processes in soil are poorly understood.
Stefano Fazi   +14 more
doaj   +1 more source

Oxalate- and Glyoxylate-Dependent Growth and Acetogenesis by Clostridium thermoaceticum [PDF]

open access: yesApplied and Environmental Microbiology, 1993
The acetogenic bacterium Clostridium thermoaceticum ATCC 39073 grew at the expense of the two-carbon substrates oxalate and glyoxylate. Other two-carbon substrates (acetaldehyde, acetate, ethanol, ethylene glycol, glycolaldehyde, glycolate, and glyoxal) were not growth supportive.
S L, Daniel, H L, Drake
openaire   +2 more sources

Data_Sheet_1_Competition Between Chemolithotrophic Acetogenesis and Hydrogenotrophic Methanogenesis for Exogenous H2/CO2 in Anaerobically Digested Sludge: Impact of Temperature.DOCX

open access: yes, 2019
Anaerobic digestion is a widely applied technology for sewage sludge treatment. Hydrogen and CO2 are important degradation products, which serve as substrates for both hydrogenotrophic methanogenesis and chemolithotrophic acetogenesis.
Hongbo Liu (124714)   +4 more
core   +1 more source

CO2 supply is a powerful tool to control homoacetogenesis, chain elongation and solventogenesis in ethanol and carboxylate fed reactor microbiomes

open access: yesFrontiers in Bioengineering and Biotechnology
Anaerobic fermentation technology enables the production of medium chain carboxylates and alcohols through microbial chain elongation. This involves steering reactor microbiomes to yield desired products, with CO2 supply playing a crucial role in ...
Kasper D. de Leeuw   +4 more
doaj   +1 more source

Complex Multimeric [FeFe] Hydrogenases: Biochemistry, Physiology and New Opportunities for the Hydrogen Economy

open access: yesFrontiers in Microbiology, 2018
Hydrogenases are key enzymes of the energy metabolism of many microorganisms. Especially in anoxic habitats where molecular hydrogen (H2) is an important intermediate, these enzymes are used to expel excess reducing power by reducing protons or they are ...
Kai Schuchmann   +2 more
doaj   +1 more source

Advancements and Challenges in Second‐ and Third‐Generation Biofuels: A Comparative Analysis of Lignocellulosic and Algal Feedstocks

open access: yesSafety Science and Technology, Volume 1, Issue 3, September 2026.
ABSTRACT Advanced biofuels derived from nonfood biomass are increasingly recognized as strategic components of low‐carbon energy systems, particularly for sectors where direct electrification remains difficult. Second‐generation biofuels from lignocellulosic residues and third‐generation biofuels from algal and aquatic biomass offer complementary ...
Majid Saidi, Amirreza Ahmadbozorgi
wiley   +1 more source

Energy-Conserving Enzyme Systems Active During Syntrophic Acetate Oxidation in the Thermophilic Bacterium Thermacetogenium phaeum

open access: yesFrontiers in Microbiology, 2019
The thermophilic acetogen Thermacetogenium phaeum uses the Wood-Ljungdahl pathway (WLP) in both directions, either for the production of acetate from various compounds or for the oxidation of acetate in syntrophic cooperation with methanogens.
Anja Keller   +4 more
doaj   +1 more source

Two‐Stage Anaerobic Digestion of Sugarcane Vinasse: A Bibliometric Analysis of Research Trends and Gaps

open access: yesEnvironmental Quality Management, Volume 36, Issue 3, September 2026.
ABSTRACT Sugarcane vinasse, a by‐product of bioethanol production, poses a significant environmental challenge due to its high organic load and the large volumes generated. Anaerobic digestion (AD) has been widely explored as an alternative treatment, particularly in two‐stage configurations that can enhance methane recovery.
Maria Teresa de Jesus Camelo Guedes   +2 more
wiley   +1 more source

Reducing Enteric Methanogenesis through Alternate Hydrogen Sinks in the Rumen

open access: yesMethane, 2022
Climate change and the urgent need to reduce greenhouse gas (GHG) emission from agriculture has resulted in significant pressure on the livestock industry for advanced practices that are environmentally more sustainable. Livestock is responsible for more
Prasanta Kumar Choudhury   +3 more
doaj   +1 more source

Comprehensive Review on Green Transformation of Organic Waste Into Bioenergy Using Microbial Enzymes: Advances, Challenges, and Future Strategies

open access: yesGCB Bioenergy, Volume 18, Issue 9, September 2026.
Microbial enzyme‐mediated biorefineries enable the sustainable conversion of organic waste into renewable bioenergy and value‐added products. Recent advances on enzymatic pretreatment, enzyme cocktails, and hybrid processing enhance biogas, bioethanol, and biodiesel production, along with supporting efficient waste valorization, circular bioeconomy ...
Divya Divakaran   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy