Nitrospira in wastewater treatment: applications, opportunities and research gaps

IF 8.6 1区 环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Reviews in Environmental Science and Bio/Technology Pub Date : 2022-10-03 DOI:10.1007/s11157-022-09634-z
Elaine Cristina Latocheski, Maria Carolina Vieira da Rocha, Maria Cristina Borba Braga
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引用次数: 6

Abstract

Nitrification is an intermediary reaction common to various processes applied to treat nitrogen-containing wastewaters. The genus Nitrospira is the most diverse among nitrifying microorganisms and of significant importance in nitrification in natural and engineered environments. These microorganisms are versatile, and niche differentiation has been observed even at the same lineage level. In general, bacteria of the genus Nitrospira can adapt to a wide range of conditions such as substrate concentrations, dissolved oxygen, and temperature. However, environmental and operating factors governing the presence and abundance of these organisms in different habitats are still not completely understood. Nitrite-oxidizing bacteria and complete ammonia oxidizers (comammox) of the genus Nitrospira are the nitrifying organisms frequently predominant in wastewater treatment plants. Nitrospira may also be associated with opportunities for wastewater treatment such as bioprocesses that consume less energy for aeration and produce a smaller volume of pollutant gases during nitrification. Nevertheless, the genus Nitrospira has not yet been completely characterized, and very few isolates have been obtained, making it difficult to investigate their unique metabolism for wastewater treatment. Therefore, to fill knowledge gaps and improve the understanding of the ecophysiology and importance of Nitrospira, it is crucial to develop an integrated strategy for the cultivation, identification, and characterization of these microorganisms. Thus, this review aims to identify some research gaps on Nitrospira and highlight the importance of this genus in the treatment of nitrogen-containing wastewater, as well as the interfering factors associated with niche differentiation and methods currently used to investigate these microorganisms.

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硝基螺旋体在废水处理中的应用、机遇和研究差距
硝化作用是用于处理含氮废水的各种工艺中常见的中间反应。硝化螺旋菌属是硝化微生物中种类最多的一种,在自然和工程环境的硝化作用中具有重要意义。这些微生物是多用途的,甚至在同一谱系水平上也观察到生态位分化。一般来说,硝化螺旋菌属的细菌可以适应广泛的条件,如底物浓度、溶解氧和温度。然而,控制这些生物在不同栖息地的存在和丰度的环境和操作因素仍未完全了解。硝化螺旋菌属的亚硝酸盐氧化菌和完全氨氧化菌(comammox)是污水处理厂中经常占优势的硝化生物。硝化螺旋菌也可能与废水处理的机会有关,如生物工艺,在曝气过程中消耗较少的能量,在硝化过程中产生较少的污染气体。然而,硝基螺旋藻属尚未完全表征,并且很少有分离物被获得,这使得很难研究其独特的废水处理代谢。因此,为了填补知识空白,提高对硝化螺旋菌的生态生理学和重要性的认识,制定一套培养、鉴定和表征这些微生物的综合策略是至关重要的。因此,本文综述了硝基螺旋藻的一些研究空白,强调了该属在含氮废水处理中的重要性,以及与生态位分化相关的干扰因素和目前研究这些微生物的方法。图形抽象
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来源期刊
Reviews in Environmental Science and Bio/Technology
Reviews in Environmental Science and Bio/Technology Environmental Science-Waste Management and Disposal
CiteScore
25.00
自引率
1.40%
发文量
37
审稿时长
4.5 months
期刊介绍: Reviews in Environmental Science and Bio/Technology is a publication that offers easily comprehensible, reliable, and well-rounded perspectives and evaluations in the realm of environmental science and (bio)technology. It disseminates the most recent progressions and timely compilations of groundbreaking scientific discoveries, technological advancements, practical applications, policy developments, and societal concerns encompassing all facets of environmental science and (bio)technology. Furthermore, it tackles broader aspects beyond the natural sciences, incorporating subjects such as education, funding, policy-making, intellectual property, and societal influence.
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