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Materials
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Mineralization of Metals through Bio Activities
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Mineralization of Metals through Bio Activities

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 4194

Special Issue Editor

Dr. Michio Suzuki

E-Mail Website
Guest Editor
Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
Interests: biomineralization; bio inorganic chemistry; analytical chemistry; bioremediation; environmental science; material science; marine biotechnology

Special Issue Information

Dear Colleagues,

Living organisms transport or accumulate inorganic elements that are used for metabolic processes, as minerals and hard tissue components, or for detoxification. Magnetotactic bacteria contain magnetite nanoparticles in the magnetosome. Many bacteria have a strong potential to accumulate metal ions inside or outside the cells and synthesize metal nanoparticles. Microalgae surround their cell body with silicate or calcium carbonate for protection and buoyancy. Invertebrates such as corals, bivalves, gastropods, and crustaceans use calcium carbonate for their exoskeleton. These synthesized minerals, having bioactivity, are called biominerals. Biominerals contain fine repeated microstructures with special optical properties and extraordinary toughness and stiffness. Such biominerals are considered functional materials for the industry. Studies on the molecular mechanisms of bioactivity will be fundamental for material science.

In this Special Issue, the mineralization of metals through bioactivity, including biomineralization, bioremediation, and bioabsorption of metals, will be presented and discussed.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Michio Suzuki
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biomineralization
  • bioremediation
  • biometal
  • bioactivity
  • calcium carbonate
  • magnetite
  • silicate
  • calcium phosphate
  • bioabsorption
  • microorganism
  • invertebrate
  • cell

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Published Papers (2 papers)

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Research

15 pages, 2920 KiB  
Article
Iron Elution from Iron and Steel Slag Using Bacterial Complex Identified from the Seawater
by Hidenori Tsukidate, Seika Otake, Yugo Kato, Ko Yoshimura, Masafumi Kitatsuji, Etsuro Yoshimura and Michio Suzuki
Materials 2021, 14(6), 1477; https://doi.org/10.3390/ma14061477 - 17 Mar 2021
Cited by 4 | Viewed by 1981
Abstract
Iron and steel slag (ISS) is a byproduct of iron refining processes. The lack of iron in seawater can cause barren grounds where algae cannot grow. To improve the barren grounds of the sea, a supply of iron to the seawater is necessary. [...] Read more.
Iron and steel slag (ISS) is a byproduct of iron refining processes. The lack of iron in seawater can cause barren grounds where algae cannot grow. To improve the barren grounds of the sea, a supply of iron to the seawater is necessary. This study focused on bacteria interacting with ISS and promoting iron elution in seawater. Sulfitobacter sp. (TO1A) and Pseudomonas sp. (TO1B) were isolated from Tokyo Bay and Sagami Bay. The co-culture of both bacteria promoted more iron elution than individual cultures. After the incubation of both bacteria with ISS, quartz and vaterite appeared on the surface of the ISS. To maintain continuous iron elution from the ISS in the seawater, we also isolated Pseudoalteromonas sp. (TO7) that formed a yellow biofilm on the ISS. Iron was eluted by TO1A and TO1B, and biofilm was synthesized by TO7 continuously in the seawater. The present research is expected to contribute to the improvement of ISS usage as a material for the construction of seaweed forests. Full article
(This article belongs to the Special Issue Mineralization of Metals through Bio Activities)
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19 pages, 4377 KiB  
Article
Metal Accumulation Using a Bacterium (K-142) Identified from Environmental Microorganisms by the Screening of Au Nanoparticles Synthesis
by Yiting Li and Michio Suzuki
Materials 2020, 13(21), 4922; https://doi.org/10.3390/ma13214922 - 2 Nov 2020
Cited by 1 | Viewed by 1721
Abstract
The use of technology that uses organisms to synthesize metal nanoparticles is necessary to maintain a sustainable society. In this study, we investigated and screened the microorganisms isolated from environmental water by quantifying the reproducibility of synthetic Au nanoparticles and the ability of [...] Read more.
The use of technology that uses organisms to synthesize metal nanoparticles is necessary to maintain a sustainable society. In this study, we investigated and screened the microorganisms isolated from environmental water by quantifying the reproducibility of synthetic Au nanoparticles and the ability of large amount synthesis. The microorganism (K-142) of the Bacillus genus showed the best activity in the investigation. K-142 can also synthesize Ag, CdS and PbS nanoparticles, and the deposition efficiency of Ag, Al, Cd, Cu, and Pb was about 64.8–99.2%. According to the observation results under the microscope after fluorescent staining, K-142 could survive after being treated with 0.5 mM metal solution for 24 h. Therefore, it is expected that K-142, which is easy to cultivate, would also have a high ability to reduce and deposit metal substances. K-142 can be applied to the concentration and recovery of heavy metals in environmental water, thereby opening up channels for biological water purification. Full article
(This article belongs to the Special Issue Mineralization of Metals through Bio Activities)
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