AI Article Synopsis
- Iron is a key player in various microbial processes related to iron redox that impact global carbon and nitrogen cycles.
- These processes include dissimilatory iron reduction, ammonium oxidation linked to iron reduction, and others that involve essential microorganisms and unique reaction mechanisms.
- The review highlights potential applications in wastewater treatment, identifies research gaps, and suggests future directions for developing cost-effective and eco-friendly iron-based treatment methods.
Article Abstract
Iron is the most abundant redox-active metal on Earth. The microbially mediated iron redox processes, including dissimilatory iron reduction (DIR), ammonium oxidation coupled with Fe(III) reduction (Feammox), Fe(III) dependent anaerobic oxidation of methane (Fe(III)-AOM), nitrate-reducing Fe(II) oxidation (NDFO), and Fe(II) dependent dissimilatory nitrate reduction to ammonium (Fe(II)-DNRA), play important parts in carbon and nitrogen biogeochemical cycling globally. In this review, the reaction mechanisms, electron transfer pathways, functional microorganisms, and characteristics of these processes are summarized; the prospective applications for carbon and nitrogen removal from wastewater are reviewed and discussed; and the research gaps and future directions of these processes for the treatment of wastewater are also underlined. This review is expected to give new insights into the development of economic and environmentally friendly iron-based wastewater treatment procedures.
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| http://dx.doi.org/10.1016/j.biortech.2025.132041 | DOI Listing |
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