Results 41 to 50 of about 2,678 (169)

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

Safety Science and Technology, EarlyView.
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

Determination of Microbial Maintenance in Acetogenesis and Methanogenesis by Experimental and Modeling Techniques [PDF]

Frontiers in Microbiology, 2019
For biogas-producing continuous stirred tank reactors, an increase in dilution rate increases the methane production rate as long as substrate input can be converted fully. However, higher dilution rates necessitate higher specific microbial growth rates, which are assumed to have a strong impact on the apparent microbial biomass yield due to cellular ...
Bonk, Fabian, Popp, Denny, Weinrich, Sören, Sträuber, Heike, Becker, Daniela, Kleinsteuber, Sabine, Harms, Hauke, Centler, Florian   +7 more
openaire   +4 more sources

Constructing metabolic pathways for biogas production at low temperatures through metagenomic and metatranscriptomic analyses

Notulae Scientia Biologicae
This study aimed to determine the metabolic pathways based on the abundance of microorganisms and the activity of genetic clusters of orthologous groups of proteins (COGs) involved in biogas production.
BUDIANTO, Diah KUSMARDINI, Krysnha MURTY, NURFADHILAH, Gito Tri Putra ISWANDI   +4 more
doaj   +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

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

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

Frontiers 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, Fabrizio Ungaro, Stefania Venturi, Stefania Venturi, Lara Vimercati, Carolina Cruz Viggi, Silvia Baronti, Francesca Ugolini, Costanza Calzolari, Franco Tassi, Franco Tassi, Orlando Vaselli, Orlando Vaselli, Antonio Raschi, Federico Aulenta   +14 more
doaj   +1 more source

Methanol Metabolism in the Cytochrome and Menaquinone‐Containing Acetogen Moorella thermoacetica

Environmental Microbiology, Volume 28, Issue 7, July 2026.
The thermophilic acetogenic bacterium Moorella thermoacetica is a promising platform organism to convert C1 compounds to valuable products. Gaseous C1 substrates are technically difficult to use for fermentation in an industrial scale, but methanol, which can be produced chemically from carbon dioxide, is a suitable alternative.
Florian P. Rosenbaum, Anja Poehlein, Rolf Daniel, Volker Müller   +3 more
wiley   +1 more source

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

Frontiers 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, Kasper D. de Leeuw, Marius J. W. van Willigen, Ton Vrauwdeunt, David P. P. T. B. Strik   +4 more
doaj   +1 more source

A Comprehensive Review of the Key Factors Affecting Biogas Production From Anaerobic Digestion of Organic Waste

CleanMat, Volume 3, Issue 2, Page 74-98, June 2026.
Efficient conversion of organic waste to biogas depends on the coordinated optimization of feedstock composition, pretreatment, operational parameters, reactor design, and microbial community dynamics. This review highlights how these interacting factors improve methane yield and process stability, advancing anaerobic digestion as a practical pathway ...
Ahmed Alengebawy, Yi Ran, Sara Taha Abdelkhalek, Tarek Mahrous, Ahmed Ragheb, Mohamed Samer, Ping Ai   +6 more
wiley   +1 more source

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

Applied 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