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Engineering aspects of ferrate in water and wastewater treatment - a review.

Abstract

There is renewed interest in the tetra-oxy compound of +6 oxidation states of iron, ferrate(VI) (Fe(VI)O4(2-)), commonly called ferrate. Ferrate has the potential in cleaner ("greener") technologies for water treatment and remediation processes, as it produces potentially less toxic byproducts than other treatment chemicals (e.g., chlorine). Ferrate has strong potential to oxidize a number of contaminants, including sulfur- and nitrogen-containing compounds, estrogens, and antibiotics. This oxidation capability of ferrate combines with its efficient disinfection and coagulation properties as a multi-purpose treatment chemical in a single dose. This review focuses on the engineering aspects of ferrate use at the pilot scale to remove contaminants in and enhance physical treatment of water and wastewater. In most of the pilot-scale studies, in-line and on-line electrochemical ferrate syntheses have been applied. In this ferrate synthesis, ferrate was directly prepared in solution from an iron anode, followed by direct addition to the contaminant stream. Some older studies applied ferrate as a solid. This review presents examples of removing a range of contaminants by adding ferrate solution to the stream. Results showed that ferrate alone and in combination with additional coagulants can reduce total suspended solids (TSS), chemical oxygen demand (COD), biological oxygen demand (BOD), and organic matter. Ferrate also oxidizes cyanide, sulfide, arsenic, phenols, anilines, and dyes and disinfects a variety of viruses and bacteria. Limitations and drawbacks of the application of ferrate in treating contaminated water on the pilot scale are also presented.

Authors+Show Affiliations

a Energy and Environment, Battelle , Columbus , Ohio , USA.No affiliation info availableNo affiliation info available

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

25320847

Citation

Yates, Brian J., et al. "Engineering Aspects of Ferrate in Water and Wastewater Treatment - a Review." Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, vol. 49, no. 14, 2014, pp. 1603-14.
Yates BJ, Zboril R, Sharma VK. Engineering aspects of ferrate in water and wastewater treatment - a review. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2014;49(14):1603-14.
Yates, B. J., Zboril, R., & Sharma, V. K. (2014). Engineering aspects of ferrate in water and wastewater treatment - a review. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 49(14), 1603-14. https://doi.org/10.1080/10934529.2014.950924
Yates BJ, Zboril R, Sharma VK. Engineering Aspects of Ferrate in Water and Wastewater Treatment - a Review. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2014;49(14):1603-14. PubMed PMID: 25320847.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Engineering aspects of ferrate in water and wastewater treatment - a review. AU - Yates,Brian J, AU - Zboril,Radek, AU - Sharma,Virender K, PY - 2014/10/17/entrez PY - 2014/10/17/pubmed PY - 2015/5/13/medline KW - Coagulation KW - disinfection KW - ferrate KW - high-valent iron KW - oxidation KW - pollutants KW - removal KW - water treatment SP - 1603 EP - 14 JF - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering JO - J Environ Sci Health A Tox Hazard Subst Environ Eng VL - 49 IS - 14 N2 - There is renewed interest in the tetra-oxy compound of +6 oxidation states of iron, ferrate(VI) (Fe(VI)O4(2-)), commonly called ferrate. Ferrate has the potential in cleaner ("greener") technologies for water treatment and remediation processes, as it produces potentially less toxic byproducts than other treatment chemicals (e.g., chlorine). Ferrate has strong potential to oxidize a number of contaminants, including sulfur- and nitrogen-containing compounds, estrogens, and antibiotics. This oxidation capability of ferrate combines with its efficient disinfection and coagulation properties as a multi-purpose treatment chemical in a single dose. This review focuses on the engineering aspects of ferrate use at the pilot scale to remove contaminants in and enhance physical treatment of water and wastewater. In most of the pilot-scale studies, in-line and on-line electrochemical ferrate syntheses have been applied. In this ferrate synthesis, ferrate was directly prepared in solution from an iron anode, followed by direct addition to the contaminant stream. Some older studies applied ferrate as a solid. This review presents examples of removing a range of contaminants by adding ferrate solution to the stream. Results showed that ferrate alone and in combination with additional coagulants can reduce total suspended solids (TSS), chemical oxygen demand (COD), biological oxygen demand (BOD), and organic matter. Ferrate also oxidizes cyanide, sulfide, arsenic, phenols, anilines, and dyes and disinfects a variety of viruses and bacteria. Limitations and drawbacks of the application of ferrate in treating contaminated water on the pilot scale are also presented. SN - 1532-4117 UR - https://www.unboundmedicine.com/medline/citation/25320847/Engineering_aspects_of_ferrate_in_water_and_wastewater_treatment___a_review_ L2 - https://www.tandfonline.com/doi/full/10.1080/10934529.2014.950924 DB - PRIME DP - Unbound Medicine ER -