Results 111 to 120 of about 10,116 (219)

Ammonia oxidation: Ecology, physiology, biochemistry and why they must all come together [PDF]

open access: yes, 2018
Ammonia oxidation is a fundamental core process in the global biogeochemical nitrogen cycle. Oxidation of ammonia (NH3) to nitrite (NO2 −) is the first and rate-limiting step in nitrification and is carried out by distinct groups of microorganisms ...
Abby   +87 more
core   +1 more source

Microbial catalysis of the oxygen reduction reaction for microbial fuel cells: a review. [PDF]

open access: yes, 2012
The slow kinetics of the electrochemical oxygen reduction reaction (ORR) is a crucial bottleneck in the development of microbial fuel cells (MFCs). This article firstly gives an overview of the particular constraints imposed on ORR by MFC operating ...
Bergel, Alain   +2 more
core   +4 more sources

Transformation of iron in pure culture process of extremely acidophilic microorganisms

open access: yesTransactions of Nonferrous Metals Society of China, 2017
Abstract Jarosite and extracellular polymer substance generated during pure culture and bioleaching process have been widely accepted the main transformation of decreasing iron in the medium. In the present work, acidophilus bioleaching organisms Ferroplasma thermophilum, Leptospirillum ferriphilum and Acidithioobacillus ferrooxidans were ...
Jing-hua FANG   +5 more
openaire   +1 more source

Microbial iron management mechanisms in extremely acidic environments: comparative genomics evidence for diversity and versatility

open access: yesBMC Microbiology, 2008
Background Iron is an essential nutrient but can be toxic at high intracellular concentrations and organisms have evolved tightly regulated mechanisms for iron uptake and homeostasis.
Nieto Pamela A   +4 more
doaj   +1 more source

Microbiota of coal pit waste heaps of Chervonograd Mining Region after coal ash application

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2015
The aim of this work was to determine the impact of addition of coal ash from Dobrotvir TPP to waste heaps gangue (Chervonograd Mining Region) on the number of different groups of microorganisms.
S. V. Kuzmishyna   +2 more
doaj   +1 more source

Alicyclobacillus spp.: New Insights on Ecology and Preserving Food Quality through New Approaches

open access: yesMicroorganisms, 2015
Alicyclobacillus spp. includes spore-forming and thermo-acidophilic microorganisms, usually recovered from soil, acidic drinks, orchards and equipment from juice producers.
Emanuela Ciuffreda   +3 more
doaj   +1 more source

Microbes at the extreme: mining with microbes [PDF]

open access: yes, 2012
The use of microorganisms to recover precious and base metals from mineral ores and concentrates is called biomining, or biohydrometallurgical processing.
Macreadie, I, Widjewardena, U
core  

Fe(III) bioreduction kinetics in anaerobic batch and continuous stirred tank reactors with acidophilic bacteria relevant for bioleaching of limonitic laterites

open access: yesFrontiers in Microbiology
In the framework of the H2020 project CROCODILE, the recovery of Co from oxidized ores by reductive bioleaching has been studied. The objective was to reduce Fe(III) to Fe(II) to enhance the dissolution of Co from New-Caledonian limonitic laterites ...
Agathe Hubau   +5 more
doaj   +1 more source

Bioprocessing of ores: Application to space resources [PDF]

open access: yes
The role of microorganisms in the oxidation and leaching of various ores (especially those of copper, iron, and uranium) is well known. This role is increasingly being applied by the mining, metallurgy, and sewage industries in the bioconcentration of ...
Johansson, Karl R.
core   +1 more source

Correction for Bellenberg et al., "Automated Microscopic Analysis of Metal Sulfide Colonization by Acidophilic Microorganisms". [PDF]

open access: yesAppl Environ Microbiol, 2020
Bellenberg S   +11 more
europepmc   +1 more source

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