Fe（II）EDTA 在 Fe（II）EDTA-NO還原過程中的作用

論文編號:HG235  論文字數:11759,頁數:22

摘要：本文主要研究Fe(II)EDTA 在 Fe(II)EDTA-NO還原過程中的作用，通過對恒溫搖床中微生物還原NO絡合吸收液的特性的研究，考察了Fe(II)EDTA-NO還原過程中，NO吸收液中可能存在的電子受體，及其對于還原效果的影響。實驗結果表明：在Fe(II)EDTA-NO還原過程中，Fe(II)EDTA和葡萄糖都能作為電子受體，Fe(II)EDTA-NO還原速率與葡萄糖的添加量有很大關系，同時Fe(II)EDTA-NO的還原速率隨著Fe(II)EDTA濃度的增加有著一定程度的提高。但是，由于葡萄糖作為優先的電子受體，在葡萄糖存在的條件下，少量的Fe(II)EDTA被氧化。當葡萄糖作為電子受體時，細胞濃度并不增長，同時以Fe(II)EDTA作為電子受體時，細胞濃度反而有所下降。
關鍵詞：電子供體；Fe(II)EDTA；Fe(II)EDTA-NO；生物還原

Abstract: By discussing the importance of Fe(II)EDTA in the action of  Fe(II)EDTA -NO microbial reduction, the reduction properties of microorganisms under the conditions of shaking flasks and continuous operation, the isolation of microorganisms and the process of continuously steady removal of NO were investigated. The mechanism of this process was proposed and the effect of electron donor e.g. glucose and Fe(II)EDTA on the reduction of Fe(II)EDTA-NO was investigated. This study showed that reduction of NO in aqueous Fe(II)EDTA solutions was related to the concentration of glucose. The NO reduction rate was effected by the presence of Fe(II)EDTA, it was fast when the glucose was enough. Glucose played an important role during the reduction of Fe(II)EDTA, little Fe(II)EDTA was oxidized while glucose was existed. The concentration of cell increased in the condition of glucose as electron donor, while the Fe(II)EDTA acted as electron donor, it was down.
 Keywords: electron donor; Fe(II)EDTA; Fe(II)EDTA -NO; microbial reduction