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Microbially Mediated-Precipitation of Cadmium Carbonate Nanoparticles

Microbially Mediated-Precipitation of Cadmium Carbonate Nanoparticles

Serku Kang, Yumi Kim, Youngjae Lee, Yul Rohl

J Nanosci Nanotechnol. 2015 Jan;15(1):418-20.

PMID: 26328373

Abstract:

The objectives of this study were to investigate the microbially mediated precipitation of cadmium using microorganisms enriched from rhodoliths and to characterize the mineralogical properties of the precipitates. A 16S rRNA sequence analysis showed the enriched microorganisms contained carbonate forming microorganisms such as Proteus mirabilis. The microorganisms mediated Cd-precipitation with Cd-acetate, but no precipitates were formed without the microbes in D-1 medium. XRD analysis showed the precipitates were poorly crystalline Cd-carbonates (CdCO3). SEM and TEM-EDS analyses showed that the Cd-carbonate minerals were irregular in shape, 20-30 nm in size, and composed of C, O, and Cd. Therefore, microbially mediated precipitation of cadmium carbonates could be used as a precursor of CdO nanoparticles and could play an important role in Cd immobilization in Cd-contaminated water as well as CO2 fixation in natural environments.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP513780	Cadmium carbonate		513-78-0	Price

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