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Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
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Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of Manganese(II) Acetylacetonate
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Manganese biomining: A review.

A P Das1, L B Sukla, N Pradhan

  • 1Centre of Biotechnology, Siksha O Anusandhan University, Bhubaneswar, India.

Bioresource Technology
|June 3, 2011
PubMed
Summary
This summary is machine-generated.

This study explores microbial techniques for extracting manganese (Mn) from low-grade ores. It reviews current research, challenges, and future potential for industrial-scale biomining of manganese.

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Area of Science:

  • Environmental Science
  • Microbiology
  • Extractive Metallurgy

Background:

  • Biomining, the microbial extraction of metals, is established for copper, uranium, and gold but not yet for low-grade manganese ore on an industrial scale.
  • Understanding microbial metabolism and synergistic actions is key to optimizing bioleaching processes.
  • Genomic and metabolic studies offer insights into microbial adaptation and metal recovery.

Purpose of the Study:

  • To review the global status of manganese biomining research.
  • To identify factors influencing the adoption of biomining for manganese extraction.
  • To discuss challenges and future prospects of industrial manganese biomining.

Main Methods:

  • Literature review of current manganese biomining research.
  • Analysis of microbial metabolic pathways and regulatory responses.
  • Identification of technological and economic factors for biomining selection.

Main Results:

  • Biomining is a viable but underdeveloped technology for low-grade manganese ore.
  • Microbial adaptation and synergistic actions are crucial for efficient bioleaching.
  • Significant challenges remain in scaling up manganese biomining processes.

Conclusions:

  • Further research into microbial mechanisms can enhance manganese recovery.
  • Industrial-scale manganese biomining holds future potential if challenges are addressed.
  • Biomining offers a sustainable alternative for extracting metals from low-grade ores.