Tags

Type your tag names separated by a space and hit enter

Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water by Ferrate.
Environ Sci Technol. 2022 01 04; 56(1):30-47.ES

Abstract

Efforts are being made to tune the reactivity of the tetraoxy anion of iron in the +6 oxidation state (FeVIO42-), commonly called ferrate, to further enhance its applications in various environmental fields. This review critically examines the strategies to generate highly reactive high-valent iron intermediates, FeVO43- (FeV) and FeIVO44- or FeIVO32- (FeIV) species, from FeVIO42-, for the treatment of polluted water with greater efficiency. Approaches to produce FeV and FeIV species from FeVIO42- include additions of acid (e.g., HCl), metal ions (e.g., Fe(III)), and reductants (R). Details on applying various inorganic reductants (R) to generate FeV and FeIV from FeVIO42- via initial single electron-transfer (SET) and oxygen-atom transfer (OAT) to oxidize recalcitrant pollutants are presented. The common constituents of urine (e.g., carbonate, ammonia, and creatinine) and different solids (e.g., silica and hydrochar) were found to accelerate the oxidation of pharmaceuticals by FeVIO42-, with potential mechanisms provided. The challenges of providing direct evidence of the formation of FeV/FeIV species are discussed. Kinetic modeling and density functional theory (DFT) calculations provide opportunities to distinguish between the two intermediates (i.e., FeIV and FeV) in order to enhance oxidation reactions utilizing FeVIO42-. Further mechanistic elucidation of activated ferrate systems is vital to achieve high efficiency in oxidizing emerging pollutants in various aqueous streams.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Sharma VK
Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas 77843, United States.
Feng M
College of the Environment & Ecology, Xiamen University, Xiamen 361102, China.
Dionysiou DD
Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (DChEE), 705 Engineering Research Center, University of Cincinnati, Cincinnati, Ohio 45221, United States.
Zhou HC
Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States.
Jinadatha C
Central Texas Veterans Health Care System, Temple, Texas 76504-7451, United States. College of Medicine, Texas A&M University, College Station, Texas 77842-3012, United States.
Manoli K
Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas 77843, United States.
Smith MF
Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States.
Luque R
Departamento de Quimica Organica, Facultad de Ciencias, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie (C_3), Ctra Nnal IV-A, Km 396, E14014 Cordoba, Spain. Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya str., 117198 Moscow, Russian Federation.
Ma X
Zachery Department of Civil and Environmental Engineering, Texas A&M University, College Station, Texas 77843, United States.
Huang CH
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.

MeSH

Ferric CompoundsIronOxidation-ReductionWaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Review

Language

eng

PubMed ID

34918915

Citation

Sharma, Virender K., et al. "Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water By Ferrate." Environmental Science & Technology, vol. 56, no. 1, 2022, pp. 30-47.
Sharma VK, Feng M, Dionysiou DD, et al. Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water by Ferrate. Environ Sci Technol. 2022;56(1):30-47.
Sharma, V. K., Feng, M., Dionysiou, D. D., Zhou, H. C., Jinadatha, C., Manoli, K., Smith, M. F., Luque, R., Ma, X., & Huang, C. H. (2022). Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water by Ferrate. Environmental Science & Technology, 56(1), 30-47. https://doi.org/10.1021/acs.est.1c04616
Sharma VK, et al. Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water By Ferrate. Environ Sci Technol. 2022 01 4;56(1):30-47. PubMed PMID: 34918915.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reactive High-Valent Iron Intermediates in Enhancing Treatment of Water by Ferrate. AU - Sharma,Virender K, AU - Feng,Mingbao, AU - Dionysiou,Dionysios D, AU - Zhou,Hong-Cai, AU - Jinadatha,Chetan, AU - Manoli,Kyriakos, AU - Smith,Mallory F, AU - Luque,Rafael, AU - Ma,Xingmao, AU - Huang,Ching-Hua, Y1 - 2021/12/17/ PY - 2021/12/18/pubmed PY - 2022/3/24/medline PY - 2021/12/17/entrez KW - ferrate KW - high-valent iron intermediates KW - water treatment SP - 30 EP - 47 JF - Environmental science & technology JO - Environ Sci Technol VL - 56 IS - 1 N2 - Efforts are being made to tune the reactivity of the tetraoxy anion of iron in the +6 oxidation state (FeVIO42-), commonly called ferrate, to further enhance its applications in various environmental fields. This review critically examines the strategies to generate highly reactive high-valent iron intermediates, FeVO43- (FeV) and FeIVO44- or FeIVO32- (FeIV) species, from FeVIO42-, for the treatment of polluted water with greater efficiency. Approaches to produce FeV and FeIV species from FeVIO42- include additions of acid (e.g., HCl), metal ions (e.g., Fe(III)), and reductants (R). Details on applying various inorganic reductants (R) to generate FeV and FeIV from FeVIO42- via initial single electron-transfer (SET) and oxygen-atom transfer (OAT) to oxidize recalcitrant pollutants are presented. The common constituents of urine (e.g., carbonate, ammonia, and creatinine) and different solids (e.g., silica and hydrochar) were found to accelerate the oxidation of pharmaceuticals by FeVIO42-, with potential mechanisms provided. The challenges of providing direct evidence of the formation of FeV/FeIV species are discussed. Kinetic modeling and density functional theory (DFT) calculations provide opportunities to distinguish between the two intermediates (i.e., FeIV and FeV) in order to enhance oxidation reactions utilizing FeVIO42-. Further mechanistic elucidation of activated ferrate systems is vital to achieve high efficiency in oxidizing emerging pollutants in various aqueous streams. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/34918915/Reactive_High_Valent_Iron_Intermediates_in_Enhancing_Treatment_of_Water_by_Ferrate_ DB - PRIME DP - Unbound Medicine ER -