用于废水脱氮的固相电子供体的研究进展：综述

IF 3.7 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biochemical Engineering Journal Pub Date : 2024-11-22 DOI:10.1016/j.bej.2024.109575

Baoshan Wang , Xingxiang Zhang , Zhilong Dong , Xiaojie Chen , Chengcheng Wen , Zhiyuan Wang , Yingming Liu , Enli Liu

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引用次数: 0

摘要

电子供体介导的生物脱硝是处理硝态氮（NO3--N）最广泛采用的方法，NO3--N 直接或间接地通过获取电子供体提供的电子并将其转化为 N2。目前，研究最广泛的电子供体有气态、液态和固态。由于气态和液态电子供体难以储存和运输，且可能造成二次污染，可被微生物缓慢利用的固态电子供体（SPED）逐渐受到关注。固相电子供体不仅可以作为微生物附着的载体，而且大多数固相电子供体成本低廉、易于获得，因此在实际应用中具有很大的优势。本综述对不同类型的 SPED 进行了分类，并根据分类讨论了它们在生物脱氮过程中的微生物利用机制。总结了它们的脱硝性能、影响因素、实际应用和存在的问题。本综述为今后有关 SPED 及其应用的研究提供了参考。鉴于 SPED 研究的这一热点方向，本综述还对 SPED 介导的混养反硝化和 SPED 耦合电化学技术用于增强脱氮过程进行了展望。

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Research progress on solid-phase electron donors for the denitrification of wastewater: A review

Electron donor-mediated biological denitrification, the most extensively employed method for the treatment of nitrate nitrogen (NO₃⁻-N), involves NO₃⁻-N directly or indirectly by acquiring electrons provided by electron donors and converting them into N₂. Currently, the most widely researched electron donors are gaseous, liquid, and solid forms. Owing to the difficulties in storing and transporting gaseous and liquid electron donors, and their potential for causing secondary pollution, solid-phase electron donors (SPEDs), which can be slowly utilized by microorganisms, have gradually gained attention. SPEDs not only serve as a carrier for microbial attachment, but most SPEDs are also low-cost and readily available, making them advantageous for practical applications. In this review, the different types of SPEDs are classified and their microbial utilization mechanisms in the biological denitrification process discussed based on their classification. Their denitrification performance, influencing factors, practical applications, and existing issues are summarized. This review provides a reference for future research on SPED and its applications. It also provides an outlook on SPED-mediated mixotrophic denitrification and SPED-coupled electrochemical technology for enhanced nitrogen removal processes, in view of this hot direction in SPED research.

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来源期刊

Biochemical Engineering Journal 工程技术-工程：化工

CiteScore

7.10

自引率

5.10%

发文量

380

审稿时长

34 days

期刊介绍： The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.