Results 11 to 20 of about 3,381 (162)

Mechanisms of bioleaching: iron and sulfur oxidation by acidophilic microorganisms. [PDF]

Essays Biochem, 2023
Abstract Bioleaching offers a low-input method of extracting valuable metals from sulfide minerals, which works by exploiting the sulfur and iron metabolisms of microorganisms to break down the ore. Bioleaching microbes generate energy by oxidising iron and/or sulfur, consequently generating oxidants that attack sulfide mineral surfaces,
Jones S, Santini JM.
europepmc   +5 more sources

Insights into Systems for Iron-Sulfur Cluster Biosynthesis in Acidophilic Microorganisms. [PDF]

J Microbiol Biotechnol, 2022
Fe-S clusters are versatile and essential cofactors that participate in multiple and fundamental biological processes. In Escherichia coli, the biogenesis of these cofactors requires either the housekeeping Isc pathway, or the stress-induced Suf pathway which plays a general role under conditions of oxidative stress or iron limitation.
Myriam P, Braulio P, Javiera RA, Claudia MV, Omar O, Renato C, Gloria L.   +6 more
europepmc   +3 more sources

Automated Microscopic Analysis of Metal Sulfide Colonization by Acidophilic Microorganisms. [PDF]

Appl Environ Microbiol, 2018
The presented method for the assessment of mineral colonization allows accurate relative comparisons of the microbial colonization of metal sulfide concentrate particles in a time-resolved manner. Quantitative assessment of the mineral colonization development is important for the compilation of improved mathematical models for metal ...
Bellenberg S, Buetti-Dinh A, Galli V, Ilie O, Herold M, Christel S, Boretska M, Pivkin IV, Wilmes P, Sand W, Vera M, Dopson M.   +11 more
europepmc   +8 more sources

Electrochemical Characteristics of the Oxidation of Sulfur- and Iron-Containing Compounds by Acidophilic Microorganisms. [PDF]

Indian J Microbiol, 2022
The electrochemical features of the interactions of sulfur- and iron-containing compounds (ferrous sulfate, elemental sulfur, pyrite tailings, cysteine, sodium thiosulfate) with a model acidophilic consortium, including the genera Leptospirillum, Sulfobacillus, Acidithiobacillus, Ferroplasma, and Acidiplasma, were studied.
Kashevskii AV, Bulaev AG, Stom DI, Kalashnikova OB, Ramonova AA, Alferov SV, Topchiy IA, Zhdanova GO, Kupchinsky AB, Tolstoy MY, Petrova YY.   +10 more
europepmc   +3 more sources

Codon usage bias reveals genomic adaptations to environmental conditions in an acidophilic consortium. [PDF]

PLoS ONE, 2018
The analysis of codon usage bias has been widely used to characterize different communities of microorganisms. In this context, the aim of this work was to study the codon usage bias in a natural consortium of five acidophilic bacteria used for biomining.
Andrew Hart, María Paz Cortés, Mauricio Latorre, Servet Martinez   +3 more
doaj   +1 more source

Fluorescence microscopic visualization of halophile Bacillus tequilensis CH and mixed culture of acidophilic bacteria

Case Studies in Chemical and Environmental Engineering, 2021
Halophiles have been used as bioremediation agents in degradation of organic pollutants and acidophilic microorganisms are considered as efficient metal leaching agents for mineral-metal bearing wastes. In the present study, halophilic bacteria (Bacillus
Sandeep Panda, Arun Kumar Pradhan, Srabani Mishra, Nilotpala Pradhan   +3 more
doaj   +1 more source

Bioprospecting for and the applications of halophilic acidophiles in bioleaching operations [PDF]

Microbiology Australia, 2023
The economic recovery of metals from sulfide ores has become a topic of increasing interest due to the escalating demand for critical minerals and the reducing grade of available ores.
Elizabeth L. J. Watkin, Melissa K. Corbett   +1 more
doaj  

Evaluation of microbial diversity of the microbial mat from the extremely acidic Lake Robule (Bor, Serbia) [PDF]

Botanica Serbica, 2017
Extremely acidic environments are frequently formed in areas impacted by mining activities, and Lake Robule is such an ecosystem. Although an extreme environment, Lake Robule is inhabited by acidophilic microorganisms. We investigated biodiversity of the
Stanković Srđan, Vasiljević Branka, Jeremić Sanja, Cvetković Vladica, Morić Ivana   +4 more
doaj   +1 more source

Interesting Halophilic Sulphur-Oxidising Bacteria with Bioleaching Potential: Implications for Pollutant Mobilisation from Mine Waste

Microorganisms, 2023
For many years, research on the microbial-dissolution of metals from ores or waste materials mainly focussed on the study of acidophilic organisms.
Chiamaka Belsonia Opara, Nor Kamariah, Jeroen Spooren, Katrin Pollmann, Sabine Kutschke   +4 more
doaj   +1 more source

Heavy Metal Resistance Strategies of Acidophilic Bacteria and Their Acquisition: Importance for Biomining and Bioremediation

Biological Research, 2013
Microbial solubilizing of metals in acid environments is successfully used in industrial bioleaching of ores or biomining to extract metals such as copper, gold, uranium and others.
Claudio A Navarro, Diego von Bernath, Carlos A Jerez   +2 more
doaj   +1 more source