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Nature AND nurture: enabling formate-dependent growth in Methanosarcina acetivorans.
FEBS J
January 2025
Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland.
Methanosarcinales are versatile methanogens, capable of regulating most types of methanogenic pathways. Despite the versatile metabolic flexibility of Methanosarcinales, no member of this order has been shown to use formate for methanogenesis. In the present study, we identified a cytosolic formate dehydrogenase (FdhAB) present in several Methanosarcinales, likely acquired by independent horizontal gene transfers after an early evolutionary loss, encouraging re-evaluation of our understanding of formate utilization in Methanosarcinales.
View Article and Find Full Text PDFGeorgina Mills discusses a new project that aims to produce cows genetically selected for their low levels of methane emissions.
View Article and Find Full Text PDFModeling the Performance of an Anaerobic Moving Bed Biofilm Reactor.
Biotechnol Bioeng
January 2025
Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona, USA.
Sub-models representing transformation processes by microorganisms and hydrolases, a one-dimensional (1-D) biofilm, and a bioreactor were integrated to simulate organic-matter fermentation and methane (CH) production in an anaerobic moving bed biofilm reactor (AnMBBR). The integrated models correctly represented all experimental observations and identified mechanisms underlying how and why AnMBBR performance changed when the volumetric loading rate (VLR) of total chemical oxygen demand (TCOD) increased from 3.9 to 19.
View Article and Find Full Text PDFGallium: A Universal Promoter Switching CO Methanation Catalysts to Produce Methanol.
JACS Au
January 2025
Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zurich, Switzerland.
Hydrogenation of CO to methanol is foreseen as a key step to close the carbon cycle. In this study, we show that introducing Ga into silica-supported nanoparticles based on group 8-9 transition noble metals (M = Ru, Os, Rh, and Ir - Ga@SiO) switches their reactivity from producing mostly methane (sel. > 97%) to producing methanol (>50% CHOH/DME sel.
View Article and Find Full Text PDFApplication of bio-electrochemical systems for phosphorus resource recovery: Progress and prospects.
J Environ Manage
January 2025
School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China. Electronic address:
This review focuses on applying bio-electrochemical systems (BES) for phosphorus (P) recovery. Microbial fuel cells (MFCs) degrade pollutants to generate electricity and recover P, with the structure and electrode materials playing a significant role in P recovery efficiency. Microbial electrolysis cells (MECs) recover P while simultaneously producing hydrogen or methane, with factors such as voltage and pH influencing performance.
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