Novel simultaneous Fe(iii) reduction and ammonium oxidation of Klebsiella sp. FC61 under the anaerobic conditions

IF 6.1 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

RSC Advances Pub Date : 2016-01-14 DOI:10.1039/C5RA25507D

Jun feng Su, Ce Cheng, Ting lin Huang, Fang Ma, Jin suo Lu and Si cheng Shao

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引用次数: 18

Abstract

A simultaneous Fe(III) reduction and ammonium oxidation of strain FC61 was isolated from the Tang Yu oligotrophic reservoir of Xi'an (China). Strain FC61 was identified to be a species of Klebsiella sp. The Fe(III) source and carbon source were optimized as Fe(III)-citrate and glucose in the study, and it could not only reduce Fe(III), but also remove NH₄⁺-N under anaerobic conditions. The results showed that more than 75% of NH₄⁺-N was removed after 36 h. Furthermore, the reducing ratio of Fe(III) was approximately 95% by 32 h at 30 °C. The optimal conditions of strain FC61 was observed at pH of 6.0, inoculation of 10% (v/v), C/N ratio of 6 and temperature of 30 °C. This study proved that the strain FC61 had the notable capability of simultaneous Fe(III) reduction and ammonium oxidation under the anaerobic conditions.

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克雷伯氏菌sp. FC61在厌氧条件下同时进行铁(iii)还原和铵氧化的新方法

从西安唐峪贫营养水库中分离到菌株FC61同时进行Fe(III)还原和铵态氧化。菌株FC61被鉴定为克雷伯氏菌(Klebsiella sp.)。本研究将Fe(III)源和碳源优化为Fe(III)-柠檬酸盐和葡萄糖，在厌氧条件下不仅能还原Fe(III)，还能去除NH4+-N。结果表明，36 h后NH4+-N去除率超过75%，30℃下32 h时Fe(III)的还原率约为95%。菌株FC61的最佳生长条件为pH为6.0，接种量为10% (v/v)， C/N比为6，温度为30℃。本研究证明菌株FC61在厌氧条件下具有显著的同时还原Fe(III)和氨氧化的能力。

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来源期刊

RSC Advances chemical sciences-

CiteScore

7.50

自引率

2.60%

发文量

3116

审稿时长

1.6 months

期刊介绍： An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.