Highly efficient removal of phosphonates by ferrate-induced oxidation coupled with in situ coagulation.
J Hazard Mater. 2023 Jun 05; 451:131104.JH

Abstract

Phosphonates, as a kind of important organic phosphorus in wastewater, should be removed in terms of their environmental risks. Unfortunately, traditional biological treatments fail to remove phosphonates effectively due to their biological inertness. The reported advanced oxidation processes (AOPs) usually require pH adjustment or coupling with other technologies to achieve high removal efficiency. Thus, a simple and efficient method for phosphonate removal is urgently needed. Herein, ferrate was found to remove phosphonates effectively in one-step under near-neutral circumstances by coupling oxidation and in-situ coagulation. Nitrilotrimethyl-phosphonic acid (NTMP), a typical phosphonate, could be efficiently oxidized by ferrate to release phosphate. The fraction of phosphate release increased with increasing ferrate dosage and reached 43.1% when 0.15 mM ferrate was added. Fe(VI) was responsible for NTMP oxidation, while Fe(V), Fe(IV) and ⋅OH played a minor role. Ferrate-induced phosphate release facilitated total phosphorus (TP) removal, because the phosphate is more easily removed via ferrate-resultant Fe(III) coagulation than the phosphonates. The coagulation removal of TP could reach up to 90% within 10 min. Furthermore, ferrate exerted high removal efficiencies for other commonly used phosphonates with approximately or up to 90% TP removal. This work provides a one-step efficient method to treat phosphonate-containing wastewaters.

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Authors+Show Affiliations

Fan WY

CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China; USTC-CityU Joint Advanced Research Center, Suzhou Research Institute, University of Science and Technology of China, Suzhou 215123, China.

Zhang X

CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China. Electronic address: xzhang19@ustc.edu.cn.

Guo PC

CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China.

Sheng GP

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36870127

Citation

Fan, Wen-Yuan, et al. "Highly Efficient Removal of Phosphonates By Ferrate-induced Oxidation Coupled With in Situ Coagulation." Journal of Hazardous Materials, vol. 451, 2023, p. 131104.

Fan WY, Zhang X, Guo PC, et al. Highly efficient removal of phosphonates by ferrate-induced oxidation coupled with in situ coagulation. J Hazard Mater. 2023;451:131104.

Fan, W. Y., Zhang, X., Guo, P. C., & Sheng, G. P. (2023). Highly efficient removal of phosphonates by ferrate-induced oxidation coupled with in situ coagulation. Journal of Hazardous Materials, 451, 131104. https://doi.org/10.1016/j.jhazmat.2023.131104

Fan WY, et al. Highly Efficient Removal of Phosphonates By Ferrate-induced Oxidation Coupled With in Situ Coagulation. J Hazard Mater. 2023 Jun 5;451:131104. PubMed PMID: 36870127.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Highly efficient removal of phosphonates by ferrate-induced oxidation coupled with in situ coagulation. AU - Fan,Wen-Yuan, AU - Zhang,Xin, AU - Guo,Pu-Can, AU - Sheng,Guo-Ping, Y1 - 2023/02/28/ PY - 2022/11/06/received PY - 2023/01/05/revised PY - 2023/02/26/accepted PY - 2023/3/5/pubmed PY - 2023/3/5/medline PY - 2023/3/4/entrez KW - Coagulation KW - Ferrate KW - Organic phosphorus KW - Oxidation KW - Phosphonate removal SP - 131104 EP - 131104 JF - Journal of hazardous materials JO - J Hazard Mater VL - 451 N2 - Phosphonates, as a kind of important organic phosphorus in wastewater, should be removed in terms of their environmental risks. Unfortunately, traditional biological treatments fail to remove phosphonates effectively due to their biological inertness. The reported advanced oxidation processes (AOPs) usually require pH adjustment or coupling with other technologies to achieve high removal efficiency. Thus, a simple and efficient method for phosphonate removal is urgently needed. Herein, ferrate was found to remove phosphonates effectively in one-step under near-neutral circumstances by coupling oxidation and in-situ coagulation. Nitrilotrimethyl-phosphonic acid (NTMP), a typical phosphonate, could be efficiently oxidized by ferrate to release phosphate. The fraction of phosphate release increased with increasing ferrate dosage and reached 43.1% when 0.15 mM ferrate was added. Fe(VI) was responsible for NTMP oxidation, while Fe(V), Fe(IV) and ⋅OH played a minor role. Ferrate-induced phosphate release facilitated total phosphorus (TP) removal, because the phosphate is more easily removed via ferrate-resultant Fe(III) coagulation than the phosphonates. The coagulation removal of TP could reach up to 90% within 10 min. Furthermore, ferrate exerted high removal efficiencies for other commonly used phosphonates with approximately or up to 90% TP removal. This work provides a one-step efficient method to treat phosphonate-containing wastewaters. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/36870127/Highly_efficient_removal_of_phosphonates_by_ferrate_induced_oxidation_coupled_with_in_situ_coagulation_ DB - PRIME DP - Unbound Medicine ER -

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Highly efficient removal of phosphonates by ferrate-induced oxidation coupled with in situ coagulation.J Hazard Mater. 2023 Jun 05; 451:131104.JH