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Evaluation of a nitrate assimilating bacterium for potential use in nitrate bioremediation.

机译：评价硝酸盐同化细菌在硝酸盐生物修复中的潜在用途。

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摘要

Increasing levels of nitrate (NO3-N) in water resources have brought about the need to find ever more versatile forms of NO3-N removal from contaminated water. The ability of several microorganisms to transform NO3-N has been embraced as an economical form of bioremediation. Free cell and immobilized forms of Methylobacterium fujisawaense ATCC® No. 35065™ (M. fujisawaense ) were used in this study for NO3-N removal in batch settings. NO3-N removal results were as high as 100% for freely suspended cells after 96 hours and 95% for immobilized cells also after 96 hours. Statistical analyses found no significant difference in overall NO3-N removal rates between free cell and immobilized systems. These findings suggest that the organism is capable of up to full assimilation of 10 mg/L NO3-N in certain settings. The findings also suggest that the NO3-N assimilating ability of M. fujisawaense of 10 mg/L NO3-N is not greatly altered by immobilization.
机译：水资源中硝酸盐（NO3-N）含量的不断提高，带来了寻找从污染水中去除NO3-N的更多用途的需求。几种微生物转化NO3-N的能力已被视为一种经济的生物修复形式。本研究使用游离细胞和固定形式的富士甲基杆菌ATCC®No. 35065™（富士纤维素）用于批量去除NO3-N。 96小时后，自由悬浮细胞的NO3-N去除结果高达100％，固定化后96小时，去除率也高达95％。统计分析发现游离细胞和固定系统之间的总NO3-N去除率没有显着差异。这些发现表明，在某些情况下，该生物体能够完全吸收10 mg / L NO3-N。该发现还表明，固定化并没有很大地改变藤泽分枝杆菌10mg / L的NO3-N的NO3-N吸收能力。

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  • 作者

    Lies, Deidra Angeline.;

  • 作者单位

    North Dakota State University.;

  • 授予单位 North Dakota State University.;
  • 学科 Environmental Health.;Engineering Environmental.;Environmental Sciences.
  • 学位 M.S.
  • 年度 2013
  • 页码 146 p.
  • 总页数 146
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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