Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
CO is a proven pH regulator in hydrogen-based membrane biofilm reactor (H-MBfR) but how its pressure regulates microbial competition in this system remains unclear. This work evaluates the CO pressure dependent system performance, CO allocation, microbial structure and activity of CO source H-MBfR. The optimum system performance was reached at the CO pressure of 0.008 MPa, and this pressure enabled 0.18 g C/(m·d) of dissolved inorganic carbon (DIC) allocated to denitrifying bacteria (DNB) for carbon source anabolism and denitrification-related proton compensation, while inducing a bulk liquid pH (pH 7.4) in favor of DNB activity by remaining 0.21 g C/(m·d) of DIC as pH buffer. Increasing CO pressure from 0.008 to 0.016 MPa caused the markedly changed DNB composition, and the diminished DNB population was accompanied by the enrichment of sulfate-reducing bacteria (SRB). A high CO pressure of 0.016 MPa was estimated to induce the enhanced SRB activity and weakened DNB activity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2022.134875 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nisin-like biosynthetic gene clusters are widely distributed across microbiomes.
mBio
September 2025
APC Microbiome Ireland, Biosciences Institute, Biosciences Research Institute, University College, Cork, Ireland.
Bacteriocins are antimicrobial peptides/proteins that can have narrow or broad inhibitory spectra and remarkable potency against clinically relevant pathogens. One such bacteriocin that is extensively used in the food industry and with potential for biotherapeutic application is the post-translationally modified peptide, nisin. Recent studies have shown the impact of nisin on the gastrointestinal microbiome, but relatively little is known of how abundant nisin production is in nature, the breadth of existing variants, and their antimicrobial potency.
View Article and Find Full Text PDFMetabolic interplay of SCFA's in the gut and oral microbiome: a link to health and disease.
Front Oral Health
August 2025
Conservative Dentistry and Endodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte (deemed to be) University, Mangalore, India.
Short-chain fatty acids (SCFAs), primarily acetate (C2), propionate (C3), and butyrate (C4), are crucial microbial metabolites formed by the fermentation of dietary fibers by gut microbiota in the colon. These SCFAs, characterized by fewer than six carbon atoms, serve as an essential energy source for colonic epithelial cells and contribute approximately 10% of the body's total energy requirement. They are central to maintaining gut health through multiple mechanisms, including reinforcing intestinal barrier function, exerting anti-inflammatory effects, regulating glucose and lipid metabolism, and influencing host immune responses.
View Article and Find Full Text PDFKinship as a double-edged sword: relatedness among burying beetle larvae enhances growth but increases mortality.
Biol Lett
September 2025
Evolutionary Animal Ecology, University of Bayreuth, Bayreuth, Germany.
Theoretical and empirical considerations suggest that relatedness can have complex effects on social life. While high relatedness may promote sibling cooperation and altruism through indirect fitness benefits, it can also intensify competition if siblings share similar needs and competitive strategies. Moreover, low genetic diversity in highly related groups may heighten susceptibility to pathogens.
View Article and Find Full Text PDFChemical interactions between filter-feeding mussels and Ulvaprolifera: The role of dissolved organic matter and secondary metabolites in growth promotion and competition inhibition of algal species.
Mar Environ Res
September 2025
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China. Electronic address:
This review examines the chemical and ecological interactions between filter-feeding mussels and the green macroalga Ulva prolifera in integrated multi-trophic aquaculture (IMTA) systems. Mussels are crucial for nutrient recycling, as they filter water and release bioavailable compounds such as ammonium (NH), urea (CO(NH)), and dissolved organic matter (DOM). These compounds promote Ulva growth and enhance microbial activity.
View Article and Find Full Text PDFEffect of Metschnikowia pulcherrima and 24-epibrassinolide on grape quality preservation and Botrytis control during postharvest.
Plant Physiol Biochem
August 2025
College of Enology, Northwest A&F University, Yangling, China; Heyang Grape Experiment and Demonstration Station, Northwest A&F University, Heyang, 715300, China; Shaanxi Engineering Research Center for Viti Viniculture, 712100, Yangling, China. Electronic address:
Postharvest deterioration in table grapes, driven by fungal pathogens and oxidative damage, remains a critical concern. This study evaluated the synergistic potential of 24-epibrassinolide (EBR) and Metschnikowia pulcherrima (Y) in preserving the quality of Red Globe grapes. The combined treatment of EBR and Y (YBR) significantly enhanced phenolic biosynthesis, elevating flavonoids and anthocyanin by 27.
View Article and Find Full Text PDF