纳米零价铁协同反硝化细菌去除硝酸盐的研究进展  

Research progress of nanoscale zero-valent iron in synergistic combinations of denitrifying bacteria for nitrate removal

作　　者：赵洪 何腾霞 郑春霞 王侧容 刘欢 田亚菲 刘建蕊 ZHAO Hong;HE Tengxia;ZHENG Chunxia;WANG Cerong;LIU Huan;TIAN Yafei;LIU Jianrui(Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education),Collaborative Innovation Center for Mountain Ecology&Agro-Bioengineering(CICMEAB),Institute of Agro-Bioengineering,College of Life Sciences,Guizhou University,Guiyang 550025,Guizhou,China)

机构地区：[1]贵州大学生命科学学院农业生物工程研究院山地生态与农业生物工程协同创新中心山地植物资源保护与种质创新教育部重点实验室,贵州贵阳550025

出　　处：《生物工程学报》2024年第10期3441-3459,共19页Chinese Journal of Biotechnology

基　　金：国家自然科学基金地区科学基金项目(42167019);贵州大学培育项目(贵大培育[2019]50号)。

摘　　要：硝酸盐(NO_(-)^(3)-N)是一种水体中常见的无机氮污染物,过量的NO_(-)^(3)-N会使水体富营养化并对人体健康构成威胁。纳米零价铁(nanoscale zero-valent iron,nZVI)因具有高比表面积并可作为优良电子供体,在NO_(-)^(3)-N去除方面备受关注。nZVI协同反硝化细菌(denitrifying bacteria,DNB)可高效地转化NO_(-)^(3)-N为氮气(N_(2)),该方法不仅能显著提高NO_(-)^(3)-N的去除率,而且比传统的化学脱氮法更绿色环保,在NO_(-)^(3)-N污染治理中具有更大的应用潜力。因此,有必要深入认识nZVI协同DNB高效去除NO_(-)^(3)N的互作机理。本文详细阐述了影响nZVI与DNB协同去除NO_(-)^(3)-N的相关因素,综述了nZVI协同DNB去除NO_(-)^(3)-N的最新研究进展,系统分析了nZVI与DNB协同去除NO_(-)^(3)-N相互作用机理,综合讨论了nZVI协同DNB高效去除NO_(-)^(3)-N所面临的挑战,并对未来的研究方向进行了展望,为开发更高效治理NO_(-)^(3)-N污染的方法提供了理论依据和参考。Nitrate(NO_(-)^(3)-N)is a common inorganic nitrogen pollutant in water.Excessive NO_(-)^(3)-N can lead to water eutrophication and threaten human health.Nanoscale zero-valent iron(nZVI)has attracted much attention in NO_(-)^(3)-N removal due to its high specific surface and excellent electron donor properties.The combination of nZVI and denitrifying bacteria(DNB)demonstrates high efficiency in converting NO_(-)^(3)-N into N_(2).This approach not only substantially enhances the removal rate of NO_(-)^(3)-N but also exhibits superior environmental sustainability compared with conventional chemical denitrification methods.Accordingly,it holds substantial promise for mitigating NO_(-)^(3)-N pollution and warrants further exploration in the pollution control.Therefore,it is necessary to understand the interaction mechanism between nZVI and DNB for NO_(-)^(3)-N removal.This paper details the factors affecting the removal of NO_(-)^(3)-N by nZVI combined with DNB,reviews the latest research progress in this field,elaborates on the interaction mechanism between nZVI and DNB for NO_(-)^(3)-N removal,and discusses the challenges and future research directions of NO_(-)^(3)-N removal by nZVI combined with DNB.This review aims to provide a theoretical basis for the development of efficient approaches for the remediation of NO_(-)^(3)-N pollution.

关 键 词：纳米零价铁 硝酸盐 反硝化细菌 毒害作用 生物脱氮 微生物 

分 类 号：X52[环境科学与工程—环境工程] X172