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Related Concept Videos

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Hyperthermophilic Bacteria

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Domain Bacteria includes some unique hyperthermophilic species. They exhibit remarkable adaptations that enable survival in extreme environments.Thermotoga species are rod-shaped, gram-negative, non-sporulating hyperthermophiles that form a sheath-like envelope called a toga. They ferment sugars or starch, producing lactate, acetate, CO₂, and H₂, and can also grow via anaerobic respiration using H₂ and ferric iron. Found in hot springs and hydrothermal vents, over 20% of their...
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Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist...
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Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
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Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like...
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Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
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Anoxygenic phototrophic bacteria are a diverse group of microorganisms that perform photosynthesis without producing oxygen. They primarily include purple sulfur bacteria, purple nonsulfur bacteria, green sulfur bacteria, and green nonsulfur bacteria. These bacteria are classified into the Gammaproteobacteria, Alphaproteobacteria, Betaproteobacteria, Chlorobi, and Chloroflexi lineages, each with distinct physiological and ecological adaptations.Purple sulfur bacteria belong to the...
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Thermophilic microorganisms in biomining.

Edgardo Rubén Donati1, Camila Castro2, María Sofía Urbieta2

  • 1CINDEFI (CCT LA PLATA-CONICET, UNLP), Facultad de Ciencias Exactas (UNLP), 47 y 115, (1900) La Plata, Buenos Aires, Argentina. donati@quimica.unlp.edu.ar.

World Journal of Microbiology & Biotechnology
|September 16, 2016
PubMed
Summary

Biomining uses microbes for metal extraction but is slow. Using thermophilic (heat-loving) organisms can speed up biomining processes, making it more efficient and cost-effective for mineral recovery.

Keywords:
BioleachingBiominingBiooxidationMetal recoveryThermophiles

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Area of Science:

  • Applied biotechnology
  • Mineral processing
  • Hydrometallurgy

Background:

  • Biomining offers an economically viable and cleaner alternative to traditional metal extraction.
  • Current biomining applications primarily use mesophilic microorganisms, operating below 40-50°C.
  • Slow process rates hinder wider biomining adoption despite environmental advantages over smelting and roasting.

Purpose of the Study:

  • To review the current status of biomining using thermophilic microorganisms.
  • To describe the characteristics of thermophilic biominers.
  • To discuss the future potential of thermophilic biomining.

Main Methods:

  • Review of scientific literature on thermophilic biomining.
  • Characterization of thermophilic bacteria and archaea for metal extraction.
  • Analysis of operational advantages of higher temperatures in biomining.

Main Results:

  • Thermophilic biomining offers faster metal extraction rates due to higher operational temperatures.
  • Elevated temperatures reduce the need for cooling systems and mitigate mineral surface passivation.
  • Numerous thermophilic microorganisms have been identified and utilized for metal recovery.

Conclusions:

  • Thermophiles present a significant advantage for accelerating biomining processes.
  • Increased operational temperatures enhance efficiency and reduce costs in metal bioextraction.
  • Thermophilic biomining holds considerable promise for the future of sustainable metal production.