Title of Paper:Acclimation of a marine microbial consortium for efficient Mn(II) oxidation and manganese containing particle production

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Date of Publication:2016-03-05

Journal:JOURNAL OF HAZARDOUS MATERIALS

Included Journals:SCIE、EI、PubMed

Volume:304

Page Number:434-440

ISSN No.:0304-3894

Key Words:Bioremediation; Manganese oxidizing bacteria; Microbial consortium; High-throughput sequencing

Abstract:Sediment contamination with metals is a widespread concern in the marine environment. Manganese oxidizing bacteria (MOB) are extensively distributed in various environments, but a marine microbial community containing MOB is rarely reported. In this study, a consortium of marine metal-contaminated sediments was acclimated using Mn(II). The shift in community structure was determined through high-throughput sequencing. In addition, the consortium resisted several harsh conditions, such as toxic metals (1 mM Cu(II) and Fe(III)), and exhibited high Mn(II) oxidation capacities even the Mn(II) concentration was up to 5 mM. Meanwhile, biogenic Mn containing particles were characterized by scanning electron microscope (SEM), X-ray powder diffraction (XRD), and N-2 adsorption/desorption. Dye removal performance of the Mn containing particles was assayed using methylene blue, and 20.8 mg g(-1) adsorption capacity was obtained. Overall, this study revealed several new genera associated with Mn(II) oxidation and rare biogenic Na3MnPO4CO3, Results suggested the complexity of natural microbe-mediated Mn transformation. (C) 2015 Elsevier B.V. All rights reserved.