Results 11 to 20 of about 13,726 (266)
Nitrate and bromate removal by autotrophic and heterotrophic denitrification processes: batch experiments [PDF]
Journal of Environmental Health Science and Engineering, 2013 The effects of various parameters on bromate reduction were tested using lab-scale batch reactors with sulfur based autotrophic and methanol based heterotrophic denitrification processes. The initial bromate (BrO3-) concentration of 100 and 500 μg/L was completely reduced and bromide (Br-) was produced stoichiometrically from bromate in all batch ...
Demirel, Sevgi, Bayhan, Ibrahim
core +6 more sources
Predicting Accumulation of Intermediate Compounds in Nitrification and Autotrophic Denitrification Processes: A Chemical Approach [PDF]
BioMed Research International, 2019 Nitrification and sulfur-based autotrophic denitrification processes can be used to remove ammonia from wastewater in an economical way. However, under certain operational conditions, these processes accumulate intermediate compounds, such as elemental sulphur, nitrite, and nitrous oxide, that are noxious for the environment.
José Luis Campos +10 more
openaire +6 more sources
Kinetic behavior of heterotrophic and autotrophic biofilms in wastewater treatment processes
Water Science and Technology, 1994 Conventional laboratory scale annular reactors were employed to investigate the growth dynamics of both heterotrophic and autotrophic biofilms. Based on the experimental observations and physiological aspects, which consist of defining two types of biomass: active biomass (Ma) responsible for substrate removal, and non-active biomass (Md), which plays ...
L. Calvez +4 more
openaire +2 more sources
Clostridia as Promising Biofactory for Heterotrophic (Fructose) and Autotrophic (C1-Gas) Fermentation [PDF]
FermentationThis study compared the performance of Clostridium ljungdahlii and Clostridium aceticum in the fermentation of fructose and C1-gasses (CO, CO2, N2) to produce valuable products such as ethanol and acetic acid. In heterotrophic fermentation (fructose), C.
Marina Fernández-Delgado +4 more
doaj +2 more sources
Microbial autotrophic biorefineries: Perspectives for biopolymer production [PDF]
, 2022 The use of autotrophic microorganisms to fabricate biochemical products has attracted much attention in both academia and industry. Unlike heterotrophic microorganisms that require carbohydrates and amino acids for growth, autotrophic microorganisms have
Numata, Keiji +2 more
core +1 more source
Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
wiley +1 more source
Marine Ecology, EarlyView., 2023 Abstract Microplastic input into the ocean represents an increasing threat to marine biota and may endanger the functioning of marine ecosystems, especially in semi‐enclosed basins, such as the Mediterranean Sea. The size spectrum of microplastics overlaps with that of nano‐microplankton (2–200 μm), thus potentially misleading suspension‐feeding ...
Claudia Traboni +3 more
wiley +1 more source
Marine Ecology, EarlyView., 2023 Abstract Plankton play a key role in marine food webs by producing and transferring organic matter and energy to higher trophic levels. To define the trophic structure and interactions within the planktonic communities in the Gulf of Naples, we determined carbon and nitrogen stable isotope ratios in particulate organic matter (POM, <20 μm ...
Louise Merquiol +2 more
wiley +1 more source
Frontiers in Microbiology, 2022 Crater Lake, Oregon is an oligotrophic freshwater caldera lake fed by thermally and chemically enriched hydrothermal springs. These vents distinguish Crater Lake from other freshwater systems and provide a unique ecosystem for study.
Amanda Stromecki +3 more
doaj +1 more source
Eddy-enhanced primary production sustains heterotrophic microbial activities in the Eastern Tropical North Atlantic [PDF]
Biogeosciences, 2022 Mesoscale eddies modulate the ocean's physical, chemical, and biological properties. In cyclonic eddies (CEs), nutrient upwelling can stimulate primary production by phytoplankton.
Q. Devresse +6 more
doaj +1 more source