Results 51 to 60 of about 7,791 (181)

Methanogens, Methane and Gastrointestinal Motility

Journal of Neurogastroenterology and Motility, 2014
Anaerobic fermentation of the undigested polysaccharide fraction of carbohydrates produces hydrogen in the intestine which is the substrate for methane production by intestinal methanogens. Hydrogen and methane are excreted in the flatus and in breath giving the opportunity to indirectly measure their production using breath testing.
Triantafyllou, Konstantinos, Chang, Christopher, Pimentel, Mark   +2 more
openaire   +6 more sources

Seasonal variation in methane ebullition in a temperate hydropower reservoir impacts annualized estimates

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Estimates of ebullitive methane (CH4) emissions from reservoirs are highly uncertain, often based on spatial and temporal upscaling from a limited number of sampling sites and periods. While some of these estimates may adjust for seasonal variation in temperature, they rarely account for drawdown and the resulting changes in site depth and the
Anna C. Cardall, Rachel M. Pilla, Natalie A. Griffiths, Gustavious P. Williams, R. Trent Jett, Michael Jones, Nikki J. Jones, Trystan Bordeau   +7 more
wiley   +1 more source

Effect of ammonium concentration on methane oxidation and CO2 removal in an anaerobic biotrickling filter treating synthetic landfill gas and leachate

Journal of Chemical Technology &Biotechnology, Volume 101, Issue 8, Page 1632-1642, August 2026.
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán, Karla María Muñoz‐Páez, Alejandro Vargas, Idania Valdez‐Vazquez   +3 more
wiley   +1 more source

Elevated Spring Methane Emissions in a Sub‐Arctic Peatland Fen

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 8, August 2026.
Abstract The Arctic boreal region is rapidly shifting in response to global climate change, including rapid warming and permafrost thaw. Year‐round monitoring of carbon fluxes in these regions is crucial to understanding seasonal and annual carbon budgets, including methane (CH4), a potent greenhouse gas with 80 times the warming potential of carbon ...
Marco N. Montemayor, Kyle A. Arndt, Patrick Murphy, Mario Tenuta, Susan M. Natali   +4 more
wiley   +1 more source

The effect of pretreatment on VFA production from tofu and tempeh wastewater through anaerobic digestion batch

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 4, Page 1743-1761, July/August 2026.
Abstract Tofu and tempeh, derived from soybeans, are widely consumed for their nutritional value and high protein content. However, the production of these foods generates nutrient‐rich wastewater that poses environmental challenges while offering opportunities for valorization.
Lydia Mawar Ningsih, Mohammad J. Taherzadeh, Steven Wainaina, Hynek Roubík   +3 more
wiley   +1 more source

Understanding the influence of sward type and dairy cow breed on enteric methane emissions through investigation of the rumen microbiome

Frontiers in Microbiology
The current study investigated the rumen microbiome of Holstein-Friesian (HF) and Holstein-Friesian × Jersey crossbred (JFX) dairy cows grazing three sward systems; a perennial ryegrass (Lolium perenne) monoculture receiving 250 kg nitrogen (N)/ha/year ...
C. Dwan, C. Dwan, F. Buckley, F. Buckley, A. Das, P. W. O’Toole, T. F. O’Callaghan, D. Meehan, B. Horan, H. Costigan, A. Jezequel, A. Jezequel, B. Lahart   +12 more
doaj   +1 more source

Biomethane Energy Production Using Orange Hydrogen Coupled With CO2 Sequestration and Utilization

Carbon Neutralization, Volume 5, Issue 4, July 2026.
In subsurface hydrocarbon‐simulated environments, injected CO2 follows dual transformation routes: geochemical mineralization into stable carbonates (CCS) and microbially mediated conversion into CH4 energy through anaerobic metabolic processes. ABSTRACT The escalating concerns of global warming have intensified the global demand for clean energy ...
Muhammad Javed, Muhammad Irfan, Chaudhry Haider Ali, Le‐Gang Chen, Bo‐Wen Wang, Ghulam Dastgir, Muhammad Junaid Sarwar, Biao Wang, Lei Zhou, Shi‐Zhong Yang, Ji‐Dong Gu, Yi‐Fan Liu, Bo‐Zhong Mu   +12 more
wiley   +1 more source

Waste to Hydrogen: Transforming Food Waste Into Biohythane (Bio‐H2 + Bio‐CH4) in a Two‐Stage Reactor With the Aid of a Metal‐Ion Catalyst

Energy Science &Engineering, Volume 14, Issue 7, Page 3388-3421, July 2026.
This study demonstrates a two‐stage catalytic bioreactor system that converts real food waste into high‐purity biohydrogen and biohythane. In Stage‐1, an enriched Clostridium thermocellum culture combined with Ni2+─Fe2+ bimetallic catalysis enhances hydrolysis efficiency and hydrogenase activity, resulting in a 77% increase in H2 yield and 75.8% purity
K. V. Sreedharan, Debabrata Barik, Ayyar Dinesh, D. Shanmugapriya, M. Santhamoorthy, N. Ashok   +5 more
wiley   +1 more source

Electrobiocorrosion by microbes without outer‐surface cytochromes

mLife
Anaerobic microbial corrosion of iron‐containing metals causes extensive economic damage. Some microbes are capable of direct metal‐to‐microbe electron transfer (electrobiocorrosion), but the prevalence of electrobiocorrosion among diverse methanogens ...
Dawn E. Holmes, Trevor L. Woodard, Jessica A. Smith, Florin Musat, Derek R. Lovley   +4 more
doaj   +1 more source

Genus-specific remodeling of carbon and energy metabolism facilitates acetoclastic methanogenesis in Methanosarcina spp. and Methanothrix spp.

Journal of Bacteriology
Methanogenic archaea (methanogens) are microorganisms that obligately produce methane as a byproduct of their energy metabolism. While most methanogens grow on CO2+H2, isolates of the genera Methanosarcina and Methanothrix can use acetate as the sole ...
Blake E. Downing, Dinesh Gupta, Katie E. Shalvarjian, Dipti D. Nayak   +3 more
doaj   +1 more source