Results 11 to 20 of about 1,890 (199)
Biotechnologies that Utilise Acidophiles [PDF]
Current Issues in Molecular Biology, 2016 The bioleaching of mineral sulfides provides the most prevalent anthropogenic application of chemolithotrophic acidophiles. The same reactions, occurring unconstrained in the environment, are also the cause of acid mine drainage (AMD), a major issue with respect to water pollution.
Ricardo Amils, David Fernández-Remolar
core +10 more sources
Frontiers in Microbiology, 2014 All metals are toxic at high concentrations and consequently their intracellular concentrations must be regulated. Acidophilic microorganisms have an optimum growth pH < 3 and proliferate in natural and anthropogenic low pH environments. Some acidophiles
Mark eDopson +5 more
doaj +2 more sources
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 +1 more
doaj +3 more sources
Acidophilic algae isolated from mine-impacted environments and their roles in sustaining heterotrophic acidophiles [PDF]
Frontiers in Microbiology, 2012 Two acidophilic algae, identified as strains of Chlorella protothecoides var. acidicola and Euglena mutabilis, were isolated in pure culture from abandoned copper mines in Spain and Wales and grown in pH- and temperature-controlled bioreactors. The Chlorella isolate grew optimally at pH 2.5 and 30°C, with a corresponding culture doubling time of 9 h ...
Ňancucheo, Ivan, Barrie Johnson, D.
openaire +4 more sources
Comparative genomics of the proteostasis network in extreme acidophiles. [PDF]
PLoS One, 2023 Extreme acidophiles thrive in harsh environments characterized by acidic pH, high concentrations of dissolved metals and high osmolarity. Most of these microorganisms are chemolithoautotrophs that obtain energy from low redox potential sources, such as ...
Izquierdo-Fiallo K +4 more
europepmc +2 more sources
Frontiers in Microbiology, 2022 The genome streamlining theory suggests that reduction of microbial genome size optimizes energy utilization in stressful environments. Although this hypothesis has been explored in several cases of low-nutrient (oligotrophic) and high-temperature ...
Diego Cortez +5 more
doaj +1 more source
Frontiers in Microbiology, 2022 Extreme acidophiles thrive in environments rich in protons (pH values <3) and often high levels of dissolved heavy metals. They are distributed across the three domains of the Tree of Life including members of the Proteobacteria. The Acidithiobacillia
Carolina González-Rosales +6 more
doaj +1 more source
Biosulfidogenesis Mediates Natural Attenuation in Acidic Mine Pit Lakes
Microorganisms, 2020 Acidic pit lakes are abandoned open pit mines filled with acid mine drainage (AMD)—highly acidic, metalliferous waters that pose a severe threat to the environment and are rarely properly remediated.
Charlotte M. van der Graaf +8 more
doaj +1 more source
Frontiers in Microbiology, 2022 In acid drainage environments, biosulfidogenesis by sulfate-reducing bacteria (SRB) attenuates the extreme conditions by enabling the precipitation of metals as their sulfides, and the neutralization of acidity through proton consumption.
Irene Sánchez-Andrea +10 more
doaj +1 more source
Roles and Regulation of Quorum Sensing of Acidophiles in Bioleaching: A Review. [PDF]
MicroorganismsBioleaching has gained significant attention as a cost-effective and environmentally friendly approach for extracting metals from low-grade ores and industrial byproducts. The application of acidophiles in bioleaching has been extensively studied.
Luo W, Li Y, Chen S, Liang Y, Liu X.
europepmc +2 more sources