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Screening, identification, and removal dynamics of a novel iron-manganese removal strain

Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 3rd International Conference on Biomedical Engineering and Biotechnology, 25–28 September 2014, Beijing, China

Article type: Research Article

Authors: Tang, Wenwei; | Wu, Lujun | Gong, Jiemin | Ye, Guoqing | Zeng, Xinping;

Affiliations: Department of Chemistry, Tongji University, Shanghai 200092, China | School of Life Sciences and Technology, Tongji University, Shanghai 200092, China

Note: [] Corresponding authors: Wenwei Tang, Department of Chemistry, Tongji University, #1239 Siping Rd, Shanghai 200092, China. Tel./Fax:+86 021 2165983366; E-mail: [email protected].

Note: [] Xinping Zeng, School of Life Sciences and Technology, Tongji University, #1239 Siping Rd, Shanghai 200092, China. Tel./Fax:+86 021 2165983366; E-mail: [email protected].

Keywords: Iron-manganese removal strain, Citrobacter sp. FM-2, removal efficiency

DOI: 10.3233/BME-141014

Journal: Bio-Medical Materials and Engineering, vol. 24, no. 6, pp. 2049-2056, 2014

Published: 2014
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Abstract

In order to investigate biological properties of the dominant strain from the biological activated carbon (BAC) filter column, a novel, dominant iron-and-manganese removal strain, FM-2, was screened from BAC mature biological membrane. By phylogenetic analysis based on 16S rDNA sequence comparison, FM-2 was identified to be Citrobacter freundii. The experimental results indicated that Citrobacter sp. FM-2 could remove 83.6% Fe (II) and 64.9% Mn (II) after four days. Inoculum greatly influenced the iron-manganese removal performances. The appropriate inoculum concentration was 5%. The initial concentrations of Fe (II) and Mn (II) had little negative influence on its removal performance. When Fe (II) and Mn (II) concentrations were 32.9~85.7 and 25.7~46.7 mg/L, respectively, the removal of Fe (II) and Mn (II) followed the first-order dynamical model with the velocity constants of 0.8528~0.9937/d and 0.3001~0.3179/d, respectively.

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