Advances in Fe(III) bioreduction and its application prospect for groundwater remediation: A review

Jiang, Yu; Xi, Beidou; Li, Rui; Li, Mingxiao; Xu, Zhenghe; Yang, Yugui; Gao, Su

doi:10.1007/s11783-019-1173-9

Cited by 28 publications

(8 citation statements)

References 75 publications

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“…Moreover, the PFOS concentrations at the anaerobic substrate reached their lowest levels in MF-CW compared to the other CWs ( p < 0.05). According to previous research, PFAS could act as electron acceptors accompanied by the reduction of Fe(III) …”

Section: Resultsmentioning

confidence: 99%

Enhanced Removal of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in Constructed Wetlands: Iron Cycling and Microbial Mechanisms

Kang

Guo

et al. 2023

ACS EST Water

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Perfluoroalkyl substances (PFAS) are persistent and ecotoxic chemicals in aquatic environments. To date, little is known about measures for strengthening PFAS removal in constructed wetlands (CWs). In this study, the role of iron oxide and ironreducing bacteria (FeRB) in perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) removal was investigated in CWs. The removal efficiencies of PFOA and PFOS in the effluent were improved by 33.0 and 40.8%, respectively, in CWs with iron oxide and FeRB. The acetate as an intermediate product was also detected. The PFOS content was 86.7% lower at a substrate depth with poor oxygen. Almost 5.07% of PFOA and 24.6% of PFOS were absorbed by the substrate. Iron oxide increased the proportion of Proteobacteria, especially β-Proteobacteria. Increased proportions of genes that were related to iron reduction or oxidation, e.g., c-type cytochrome, reductase, and PilA, MtrC, MtrD, MshA, and FccA genes, were detected, which contributed to the iron cycle results. Meanwhile, the enhanced function of carbohydrate metabolism and greater proportions of genes involved in acetate decarboxylation (M00357; Methanosarcina and Methanothrix) played an important role in PFOA and PFOS removal. Given the increasing concerns related to PFAS, this study provides an effective and ecological in situ bioremediation method for PFAS removal.

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Section: Resultsmentioning

confidence: 99%

Enhanced Removal of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in Constructed Wetlands: Iron Cycling and Microbial Mechanisms

Kang

Guo

et al. 2023

ACS EST Water

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“…The nanosized Fe(II)-containing mineral magnetite was proven to reduce NO 3 − to N 2 in a batch environment with groundwater and sediments derived from wells located in Barcelona, Spain, to simulate aquifer conditions (Jiang et al, 2019). A similar study reported that magnetite nanoparticles could complete groundwater, but iron passivation has always been a complex problem to be solved effectively.…”

Section: Zvi/fe(ii)mentioning

confidence: 99%

“…Fe(III; hydr)oxides, functional IRM and ESs could be injected into groundwater aquifers to remove NH 4 + by constructing injection wells, permeable reactive barriers (PRBs) or Kariz systems (also known as canals), as shown in Figure 6 (Jiang et al, 2019). Spearman analysis between the geochemical parameters and microbial community in the western Hetao Basin of China indicated a widespread occurrence of Feammox in groundwater systems (Xiu et al, 2020).…”

Section: Fe(iii)mentioning

confidence: 99%

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

Pang

Luo

et al. 2022

Front. Microbiol.

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Fe-driven biological nitrogen removal (FeBNR) has become one of the main technologies in water pollution remediation due to its economy, safety and mild reaction conditions. This paper systematically summarizes abiotic and biotic reactions in the Fe and N cycles, including nitrate/nitrite-dependent anaerobic Fe(II) oxidation (NDAFO) and anaerobic ammonium oxidation coupled with Fe(III) reduction (Feammox). The biodiversity of iron-oxidizing microorganisms for nitrate/nitrite reduction and iron-reducing microorganisms for ammonium oxidation are reviewed. The effects of environmental factors, e.g., pH, redox potential, Fe species, extracellular electron shuttles and natural organic matter, on the FeBNR reaction rate are analyzed. Current application advances in natural and artificial wastewater treatment are introduced with some typical experimental and application cases. Autotrophic FeBNR can treat low-C/N wastewater and greatly benefit the sustainable development of environmentally friendly biotechnologies for advanced nitrogen control.

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“…The feasibility of Feammox, Sulfammox, and Mnammox from the thermodynamical perspective, (a), (b), and (c) were reproduced from Ref. 37, 38, and 39, respectively.…”

Section: Introductionmentioning

confidence: 99%

A review on new ammonium oxidation alternatives for effective nitrogen removal from wastewater

Zhao

Feng

et al. 2022

J of Chemical Tech & Biotech

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As a highly oxidizing ion, ammonium (NH4+) is easily reduced by other reducing substances. Recently, NH4+ oxidation coupled with Fe3+, SO42−, and Mn4+ reduction (i.e., Feammox, Sulfammox, and Mnammox) has been confirmed and their collaborative roles in removing NH4+ have been revealed in several studies. However, only limited knowledge could be obtained on observed interactions with several variable parameters due to the exiguous research in this field, which makes it challenging to draw basic and mechanistic conclusions. This review focuses on these new NH4+ oxidation alternatives and provides a systematic and comprehensive overview of recent advances in these processes. Specifically, based on the summaries of their reaction conditions, nine influencing factors (including microorganisms, concentrations of reactants, pH, redox potential, temperature, organic carbon, oxygen concentration, salinity, and inhibitory substances) are discussed in detail. Then, the drawbacks of the three processes are pointed out. The results show that, at present, the practical engineering applications for NH4+ removal are not suitable due to their harsh reaction conditions and low removal efficiency. Finally, suggestions for further research on these processes are presented to inspire more interest from researchers in related fields and to promote and realize their large‐scale engineering application in the near future. © 2022 Society of Chemical Industry (SCI).

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Advances in Fe(III) bioreduction and its application prospect for groundwater remediation: A review

Cited by 28 publications

References 75 publications

Enhanced Removal of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in Constructed Wetlands: Iron Cycling and Microbial Mechanisms

Enhanced Removal of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in Constructed Wetlands: Iron Cycling and Microbial Mechanisms

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

A review on new ammonium oxidation alternatives for effective nitrogen removal from wastewater

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