Sorption of Co Ions on Biogenic Mn Oxides Produced by a Mn-Oxidizing Fungus, Paraconiothyrium sp.-like Strain

2007 ◽  
Vol 20-21 ◽  
pp. 607-610
Author(s):  
Keiko Sasaki ◽  
M. Matsuda ◽  
T. Urata ◽  
Tsuyoshi Hirajima ◽  
H. Konno
Keyword(s):  
Redox Reaction ◽  
Mn Oxide ◽  
Biogenic Mn Oxide ◽  
Biogenic Mn Oxides ◽  
Mn Oxides

Sorption of Co(II) on the biogenic Mn oxide produced by a Paraconiothyrium sp.-like strain was investigated. The biogenic Mn oxide, which was characterized to be poorly crystalline birnessite (Na4Mn(III) 6Mn(IV) 8O27 ·9H2O) bearing Mn(III) and Mn(IV) in the structure, showed approximately 6.0-fold higher efficiency for Co(II) sorption than a synthetic Mn oxide. XP-spectra of Co 2p for the biogenic and synthetic Mn oxides after Co(II) sorption indicate that Co was immobilized as Co(III) on the surface of Mn oxides, clearly suggesting that redox reaction occurs between Co(II) ions and each Mn oxides. The Co(II) ions would be initially sorbed on the vacant sites of the surface of biogenic Mn oxide, and then oxidized to Co(III) by neighbor Mn(III/IV) atoms to release Mn(II). For the synthetic Mn oxide, release of Mn(II) was negligibly small because the oxidant is only Mn(IV) in ramsdellite (γ-MnO2). The Mn(II) release from the biogenic Mn oxide during Co(II) adsorption would be not only from weakly bounded Mn(II), but also from redox reaction between Mn(III/IV) and Co(II) ions.

scholarly journals Production of Biogenic Mn Oxides by Leptothrix discophora SS-1 in a Chemically Defined Growth Medium and Evaluation of Their Pb Adsorption Characteristics

1999 ◽  
Vol 65 (1) ◽  
pp. 175-180 ◽  
Author(s):  
Yarrow M. Nelson ◽  
Leonard W. Lion ◽  
William C. Ghiorse ◽  
Michael L. Shuler
Keyword(s):  
Specific Surface ◽  
Adsorption Isotherms ◽  
Phase Distribution ◽  
Dry Weight ◽  
Mineral Salts ◽  
Leptothrix Discophora ◽  
Mn Oxide ◽  
Biogenic Mn Oxide ◽  
Biogenic Mn Oxides ◽  
Mn Oxides

Biogenic Mn oxides were produced by the bacterium Leptothrix discophora SS-1 (= ATCC 3182) in a chemically defined mineral salts medium, and the Pb binding and specific surface area of these oxides were characterized. Growth of SS-1 in the defined medium with pyruvate as a carbon and energy source required the addition of vitamin B12. Complete oxidation of Mn(II) within 60 h required the addition of ≥0.1 μM FeSO4. Pb adsorption isotherms were determined for the biogenic Mn oxides (and associated cells with their extracellular polymer) and compared to the Pb adsorption isotherms of cells and exopolymer alone, as well as to abiotic Mn oxides. The Pb adsorption to cells and exopolymer with biogenic Mn oxides (0.8 mmol of Mn per g) at pH 6.0 and 25°C was 2 orders of magnitude greater than the Pb adsorption to cells and exopolymer alone (on a dry weight basis). The Pb adsorption to the biogenic Mn oxide was two to five times greater than the Pb adsorption to a chemically precipitated abiotic Mn oxide and several orders of magnitude greater than the Pb adsorption to two commercially available crystalline MnO2 minerals. The N2Brunauer-Emmet-Teller specific surface areas of the biogenic Mn oxide and fresh Mn oxide precipitate (224 and 58 m2/g, respectively) were significantly greater than those of the commercial Mn oxide minerals (0.048 and 4.7 m2/g). The Pb adsorption capacity of the biogenic Mn oxide also exceeded that of a chemically precipitated colloidal hydrous Fe oxide under similar solution conditions. These results show that amorphous biogenic Mn oxides similar to those produced by SS-1 may play a significant role in the control of trace metal phase distribution in aquatic systems.

scholarly journals Synthesis of MnO/C/NiO-Doped Porous Multiphasic Composites for Lithium-Ion Batteries by Biomineralized Mn Oxides from Engineered Pseudomonas putida Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 361
Author(s):  
Jin Liu ◽  
Tong Gu ◽  
Li Li ◽  
Lin Li
Keyword(s):  
Pseudomonas Putida ◽  
Photoelectron Spectroscopy ◽  
Coulombic Efficiency ◽  
Surface Display ◽  
Lithium Ion ◽  
Cell Surface Display ◽  
Mn Oxide ◽  
Biomineralization Process ◽  
Biogenic Mn Oxide ◽  
Mn Oxides

A biotemplated cation-incoporating method based on bacterial cell-surface display technology and biogenic Mn oxide mineralization process was developed to fabricate Mn-based multiphasic composites as anodes for Li-ion batteries. The engineered Pseudomonas putida MB285 cells with surface-immobilized multicopper oxidase serve as nucleation centers in the Mn oxide biomineralization process, and the Mn oxides act as a settler for incorporating Ni ions to form aggregates in this process. The assays using X-ray photoelectron spectroscopy, phase compositions, and fine structures verified that the resulting material MnO/C/NiO (CMB-Ni) was porous multiphasic composites with spherical and porous nanostructures. The electrochemical properties of materials were improved in the presence of NiO. The reversible discharge capacity of CMB-Ni remained at 352.92 mAh g−1 after 200 cycles at 0.1 A g−1 current density. In particular, the coulombic efficiency was approximately 100% after the second cycle for CMB-Ni.

Synthesis of Biogenic Mn Oxide and its Application as Lithium Ion Sieve

2013 ◽  
Vol 825 ◽  
pp. 439-442
Author(s):  
Qian Qian Yu ◽  
Emiko Morioka ◽  
Tsuyoshi Hirajima ◽  
Keiko Sasaki
Keyword(s):  
Organic Matter ◽  
Thermal Treatment ◽  
Room Temperature ◽  
Lithium Ion ◽  
Microbial Transformations ◽  
Mn Oxide ◽  
Biogenic Mn Oxide ◽  
Li Ion ◽  
Mn Oxides ◽  
Sorption Characteristics

Geomimetics, taking lessons from natures biogenic mineralization mechanisms, can provide powerful tools for advancing biohydrometallurgical processing. Microbial transformations are largely responsible for the Mn oxides found in nature. In this research biogenic birnessite was produced by a manganese-oxidizing fungus, Paraconiothyrium sp. WL-2, at pH 6.5 under room temperature, and characterized by XRD and TG-DTA. Abiotic (chemically synthesized) acidic birnessite was also prepared hydrometallurgically and subjected to a similar battery of characterization techniques. Following thermal treatment the sorption characteristics of these two materials were compared. The biogenic precursor showed several advantages to produce more effective Li-ion sieve than the chemically synthesized precursor. First, a shorter calcination period was required to produce Li4Mn5O12 without other phases; second, a greater content and higher crystallinity of H4Mn5O12 were obtained from the biogenic precursor. These advantages might be caused by poorer crystallinity and around 20 wt% organic matter in biogenic birnessite. While sorption density of Li+ in mmol/g was basically dependent on contents of H4Mn5O12 phase, the unique morphologies and sorption density were maintained with biogenic precursor even after repetition of sorption/desorption of Li+.

Selective Sorption of Ce3+ over La3+ Ions on Biogenic Manganese Oxides

2009 ◽  
Vol 71-73 ◽  
pp. 633-636 ◽  
Author(s):  
Keiko Sasaki ◽  
T. Kaseyama ◽  
Tsuyoshi Hirajima
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Manganese Oxides ◽  
Anthropogenic Sources ◽  
Fundamental Study ◽  
Selective Sorption ◽  
Ph Values ◽  
Mn Oxide ◽  
Biogenic Mn Oxides ◽  
Mn Oxides

Unique properties of biogenic Mn oxides were applied to a fundamental study of separation and recovery of rare earth elements. Selective sorption of Ce3+ over La3+ ions was achieved at neutral pH values using biogenic Mn oxides produced by Paraconiothyrium sp. WL-2 strain. The selective coefficient for Ce3+ (αCe) was much greater with biogenic and synthetic Mn oxides than those for La3+ (αLa). Ce3+ ions were oxidized to CeO2 by Mn(III, IV) in Mn oxides under anaerobic conditions resulting in the release of Mn2+ ions, while La3+ ions were sorbed without a redox reaction. With an increase in coexisting La3+ ions, sorption of Ce3+ on both Mn oxides was significantly suppressed, especially with synthetic Mn oxides. The edges of the structure are competitive sites because of fewer numbers of vacant sites in synthetic Mn oxide layers. The preferential sorption on the edge sites of Mn oxides is in the order of La3+ > Ce3+. These phenomena can be expanded to separation and recovery of other rare earth elements from natural and anthropogenic sources.

scholarly journals Antimony oxidation and adsorption by in-situ formed biogenic Mn oxide and Fe–Mn oxides

2017 ◽  
Vol 54 ◽  
pp. 126-134 ◽  
Author(s):  
Yaohui Bai ◽  
William A. Jefferson ◽  
Jinsong Liang ◽  
Tingting Yang ◽  
Jiuhui Qu
Keyword(s):  
Mn Oxide ◽  
Biogenic Mn Oxide ◽  
Mn Oxides

A very simple and high-yield method to synthesize nanolayered Mn oxide

2015 ◽  
Vol 44 (3) ◽  
pp. 1039-1045 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Emad Amini
Keyword(s):  
Low Cost ◽  
High Yield ◽  
Mn Oxide ◽  
Mn Oxides

Nanolayered Mn oxides have been prepared by a very simple, low-cost and high-yield method using soap, KOH, MnCl2and H2O2.

scholarly journals Biological Manganese Removal by Novel Halotolerant Bacteria Isolated from River Water

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 941
Author(s):  
Van Khanh Nguyen ◽  
Myung-Gyu Ha ◽  
Ho Young Kang ◽  
Dinh Duc Nguyen
Keyword(s):  
River Water ◽  
Environmental Remediation ◽  
High Salinity ◽  
Resistant Bacteria ◽  
Contaminated Water ◽  
Halotolerant Bacteria ◽  
Manganese Removal ◽  
Biogenic Mn Oxides ◽  
Detoxification Mechanisms ◽  
Mn Oxides

Manganese-oxidizing bacteria have been widely investigated for bioremediation of Mn-contaminated water sources and for production of biogenic Mn oxides that have extensive applications in environmental remediation. In this study, a total of 5 Mn-resistant bacteria were isolated from river water and investigated for Mn removal. Among them, Ochrobactrum sp. NDMn-6 exhibited the highest Mn removal efficiency (99.1%). The final precipitates produced by this strain were defined as a mixture of Mn2O3, MnO2, and MnCO3. Optimal Mn-removal performance by strain NDMn-6 was obtained at a temperature range of 25–30 °C and the salinity of 0.1–0.5%. More interestingly, strain NDMn-6 could be resistant to salinities of up to 5%, revealing that this strain could be possibly applied for Mn remediation of high salinity regions or industrial saline wastewaters. This study also revealed the potential of self-detoxification mechanisms, wherein river water contaminated with Mn could be cleaned by indigenous bacteria through an appropriate biostimulation scheme.

Mineralogical and textural evolution of the economic manganese mineralisation in western Rhodope massif, N. Greece

1991 ◽  
Vol 55 (380) ◽  
pp. 423-434 ◽  
Author(s):  
M. K. Nimfopoulos ◽  
R. A. D. Pattrick
Keyword(s):  
Surface Water ◽  
Water Table ◽  
Fault Zones ◽  
Hydrothermal Fluids ◽  
Mineral Paragenesis ◽  
Textural Evolution ◽  
Mn Oxide ◽  
Alkaline Earths ◽  
Mn Oxides ◽  
Hydrothermal Veins

AbstractThe western Rhodope massif contains a significant number of ‘battery grade’ Mn-oxide deposits which are best developed in the area near Kato Nevrokopi, Drama district, N. Greece. Economic Mn-oxide ore concentrations are confined to fault zones and related karsts in marbles. The mineralisation has formed by weathering of hydrothermal veins that were genetically related to Oligocene magmatism.At Kato Nevrokopi, progressive and continuous weathering of primary, hydrothermal veins of rhodochrosite, mixed sulphide, quartz and ‘black calcite’ (calcite and todorokite) has resulted in the formation of the assemblage MnO-gel-(amorphous Mn-oxide)-todorokite-azurite-goethite-cerussite in the veins and the assemblage MnO-gel-nsutite-chalcophanite-birnessite-cryptomelane-pyrolusite and malachite and amorphous Fe-oxides in karstic cavities.The fs2 and fO2 of the hydrothermal fluids increased with time. The breakdown of the hypogene Mn-carbonate was aided by the production of an acidic fluid due to the oxidation of sulphides. Precipitation of the supergene ores was caused by neutralisation of the fluids due to reaction with the host marble and to mixing of relatively reduced fluids with oxygenated surface water in a fluctuation water table regime. Zinc was also mobile during weathering and became concentrated in the intermediate Mn-oxides, effectively stabilising their structures. The mineral paragenesis records the progressive oxidation of the ore and the appearance of less hydrated Mn-oxides, low in alkalis and alkaline earths.

Characterization of lithium ion sieve derived from biogenic Mn oxide

2013 ◽  
Vol 179 ◽  
pp. 122-127 ◽  
Author(s):  
Qianqian Yu ◽  
Emiko Morioka ◽  
Keiko Sasaki
Keyword(s):  
Lithium Ion ◽  
Mn Oxide ◽  
Biogenic Mn Oxide
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