摘要
传统的生物脱氮技术是通过投加有机碳源作为电子供体,利用异养反硝化微生物,经过硝化反硝化过程,将硝酸盐还原为氮气。近年来以铁基质为电子供体的自养反硝化菌的发现,为生物脱氮领域引入了全新的概念和思路。铁基质自养反硝化的实现是以NO-3作为电子受体,单质铁或Fe(Ⅱ)作为电子供体,通过微生物的氧化还原反应获取能量的新型代谢途径。概述了目前国内外对铁基质自养反硝化菌的研究现状及反应机理,并就铁自养反硝化微生物应用于污水处理领域的前景进行了展望。
The traditional biological removal of nitrate utilizes heterotrophic denitrifying bacteria throughout the nitrification and denitrification stages to convert nitrate to nitrogen with the extra organic matters as the electron donor .However ,a brand-new concept and mentality for the biological nitrogen removal are introduced with several isolated strains of Fe-dependent denitrifying bacteria in recent years .It is a new discovery of microbial metabolism that microorganisms utilize NO -3 as electron acceptors and Fe or Fe（Ⅱ ） as electron donors and get energy through the biochemical reaction for growth .In this paper ,the characteristics and mechanisms of Fe（Ⅱ ）-dependent autotrophic denitrifying bacteria are reviewed ,and prospects of these bacterium are also discussed .
出处
《中国农村水利水电》
北大核心
2014年第11期59-62,67,共5页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51008239
51378400)
湖北省自然科学基金资助项目(2013CFB289
2013CFB308)
关键词
铁基质
自养反硝化
生物脱氮
Fe-dependent
autotrophic denitrification
biological denitrification
