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Manganese (Mn) pollution poses a serious threat to the health of animals, plants, and humans. The microbial-mediated Mn(II) removal method has received widespread attention because of its rapid growth, high efficiency, and economy. Mn(II)-oxidizing bacteria can oxidize toxic soluble Mn(II) into non-toxic Mn(III/IV) oxides, which can further participate in the transformation of other heavy metals and organic pollutants, playing a crucial role in environmental remediation. This study aims to conduct a bibliometric analysis of research papers on bacterial Mn(II) oxidation using CiteSpace, and to explore the research hotspots and developmental trends within this field between 2008 and 2023. A series of visualized knowledge map analyses were conducted with 469 screened SCI research papers regarding annual publication quantity, author groups and their countries and regions, journal categories, publishing institutions, and keywords. China, the USA, and Japan published the most significant number of research papers on the research of bacterial Mn(II) oxidation. Research hotspots of bacterial Mn(II) oxidation mainly focused on the species and distributions of Mn(II)-oxidizing bacteria, the influencing factors of Mn(II) oxidation, the mechanisms of Mn(II) oxidation, and their applications in environment. This bibliometric analysis provides a comprehensive visualized knowledge map to quickly understand the current advancements, research hotspots, and academic frontiers in bacterial Mn(II) oxidation.
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http://dx.doi.org/10.3390/microorganisms12081611 | DOI Listing |
Front Microbiol
August 2025
State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China.
Introduction: Manganese-oxidizing bacteria (MOB) play a critical role in converting soluble Mn(II) to insoluble Mn(III/IV) oxides, which have been widely applied for environmental remediation, particularly in heavy metal pollution control. Therefore, the discovery of novel MOB strains is of great significance for advancing pollution mitigation and ecosystem restoration.
Methods: In this study, a manganese-oxidizing bacterial strain was isolated from Mn-contaminated soil near an electroplating factory using selective LB medium supplemented with 10 mmol/L manganese chloride (MnCl), and the Leucoberbelin Blue (LBB) assay was employed to screen and identify strains with strong Mn(II)-oxidation ability.
Water Res
August 2025
State Key Laboratory of Regional Environment and Sustainability, School of Environment, Tsinghua University, Beijing 100084, China; Beijing Laboratory of Environment Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China; Key Laboratory of Drinking Water Science and
Oligotrophic groundwater limits biodegradation in sand filtration, illuminating the pathway of the in-situ production of oxidatively active Mn oxide (MnOx) to remove emerging contaminants (ECs). Based on the Mn(II) removal filter, increased production of chemical MnOx (CheMnOx) for EC removal could be realized by increasing biogenic MnOx (BioMnOx) as the Mn active film to stimulate autocatalytic Mn(II) oxidation. However, progress in exogenously enhancing biogenic Mn(II) oxidation is limited.
View Article and Find Full Text PDFJ Environ Manage
August 2025
Hubei Key Laboratory of Microbial Transformation and Regulation of Biogenic Elements in the Middle Reaches of the Yangtze River, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, 206 Guanggu 1st Road, Wuhan, 430205, PR China. Electronic address:
As(III) and Fe(II) co-oxidation by oxygen is an important process in arsenic migration, transformation, and pollution remediation in various aqueous environments. Fe(II) frequently co-exists with Mn(II) in natural settings, and their synergistic oxidation process is typically regarded as the supporting factor for As(III) oxidation. Herein, we found that Mn(II) significantly inhibited As(III) oxidation during As(III) and Fe(II) co-oxidation under near-neutral pH (6.
View Article and Find Full Text PDFMicrobiol Resour Announc
August 2025
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China.
sp. DUT-2 with Mn(II) oxidation properties was isolated from nearshore surface sediments of Liaodong Bay, China. Genome sequencing was utilized to decipher its genomic function for Mn(II) oxidation and carbon/nitrogen metabolism; the assembly yielded a genome size of 4,378,879 bp with a G + C content of 41.
View Article and Find Full Text PDFJ Am Chem Soc
August 2025
Institute of Chemistry, the Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
Metal-functionalized cavitands are promising platforms for mimicking the chemical environments of hydrophobic pockets in natural metalloenzymes. However, successfully combining the unique supramolecular capabilities of cavitand scaffolds with the high reactivities of transition metal complexes still remains a major challenge. In this study, we present an original cavitand architecture featuring a coordinatively unsaturated Mn(II) center embedded deep within its pore.
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