Ferric iron reduction acidophiles
WebMar 1, 2008 · While dissimilatory ferric iron reduction has been described previously for Acidiphilium spp., this is this first report of this capacity in Acidocella and the moderate … WebWhile dissimilatory ferric iron reduction has been described previously for Acidiphilium spp., this is this first report of this capacity in Acidocella and the moderate acidophile …
Ferric iron reduction acidophiles
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WebAug 13, 2014 · The reason for ferric iron respiration being particularly widespread among acidophiles appears to be: (1) ferric iron is often abundant and more bio-available at low pH than in near-neutral pH environments; (2) the redox potential of the ferrous/ferric couple is far more positive at pH ~2 (often quoted at +770 mV, though it is ~+690 to ~730 mV ... WebIn the environment, dissimilatory ferric iron reduction is an important electron acceptor for the oxidation of organic and inorganic electron donors and is a driver in the iron …
WebMar 1, 2008 · Dissimilatory ferric iron reduction under anaerobic conditions is widespread among acidophiles and can be coupled to the oxidation of hydrogen, sulfur, RISC or organic compounds (Coupland and ... WebMar 16, 2012 · Bioprocessing of oxidized mineral ores using acidophiles that catalyze the reductive dissolution of ferric iron minerals such as goethite has also recently been …
WebThis minireview presents recent advances in our understanding of iron oxidation and homeostasis in acidophilic Bacteria and Archaea. These processes influence the flux of … Reductive dissolution by acidophiles was shown for several ferric iron-containing minerals, as ferric hydroxide [Fe(OH)3], goethite (α-FeOOH), akageneite (β-FeOOH), magnetite (Fe3O4), potassium jarosite [KFe2(SO4)2(OH)6], and natrojarosite [NaFe2(SO4)2(OH)6] (Bridge and Johnson, 1998, … See more Acidic environments such as acid mine drainage are the result of anthropogenic influences or have a natural origin, e.g., solfataric springs (Johnson, 2009). Depending on the occurring pH, these environments are … See more Iron reduction as part of the natural iron cycle plays an important role on Earth (Kappler and Straub, 2005). Despite the well-studied mechanisms of iron reduction by neutrophilic microorganisms, the process in acidophilic … See more LM: writing manuscript, preparing figures, and tables. SH: conceptual discussions, revising, and editing manuscript. Both authors contributed … See more Although iron reduction processes mediated by acidophiles have been known for nearly 50 years, it is only in the last decade that much interest has developed in their application. This especially included the … See more
WebJan 14, 2015 · The aim of this review is to provide an up-to-date overview on ferric iron reduction by acidophiles. The importance of this process in anaerobic habitats will be demonstrated as well as its ...
WebApr 13, 2024 · Banded iron-formations (BIFs) are marine chemical sedimentary rocks composed of siliceous and ferric materials, usually with typical thin layers or sheet structures. BIFs not only record a wealth of information about the state and evolution of the lithosphere, atmosphere, hydrosphere, and biosphere but also host the majority of the … freecycle bordonWebferric iron reduction research in acidophiles are summarized in Table 1. First investigations of acidithiobacilli described aerobic ferric iron reduction at low pH … freecycle bostonWebJan 24, 2024 · Although ferric iron reduction may be observed in sulfur-containing cultures of all Acidithiobacillus spp., ... as is seen with other iron-oxidizing acidophiles (Supplementary Table S1). It was also found to be highly osmotolerant, growing in media containing > 1 M magnesium sulfate, but it was more sensitive to (sodium) chloride, with … blood pressure dot physicalWebJan 1, 2024 · Moreover, the different mechanisms of ferric iron reduction in acidophiles (anaerobic, micro-aerobic or aerobic) allow diverse operation setups for base metal … freecycle boston maWebThis is reasonable since energy generation in many species from these classes is associated with ferrous iron oxidation or ferric iron reduction (Bridge and Johnson, 2000; Holmes et al., 2004). ... and are obligate acidophiles since the oxidation of sulfur and sulfide minerals generates sulfuric acid (Bini, 2010). freecycle boston ukWebDec 24, 2024 · There are three distinct types of ferrous iron-oxidizing microbes. The first are acidophiles, such as the bacteria Acidithiobacillus ferrooxidans and Leptospirillum … blood pressure different readingsWebJul 1, 1992 · Recent new developments in the field of acidophilic iron metabolism are reviewed and new heterotrophic isolates have been described that are capable of oxidizing ferrous iron. Abstract Redox reactions of iron in acidic environments are of economic and environmental significance, for example, for the leaching of metal ores and for the … blood pressure dizziness treatment food