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Reaction kinetics and oxidation products formation in the degradation of ciprofloxacin and ibuprofen by ferrate(VI).
Chemosphere. 2015 Jan; 119 Suppl:S95-100.C

Abstract

The treatment of ciprofloxacin (CIP) and ibuprofen (IBU) in test solutions by ferrate(VI) was investigated in this study. A series of jar test was performed in bench-scale at pH 6-9 and ferrate(VI) dose of 1-5 mg L(-1). Results demonstrated that ferrate(VI) removed CIP from test solutions efficiently, with above 70% of reduction under study conditions. In contrary, the removal rates of IBU were very low, less than 25% in all conditions. Raising ferrate(VI) dose improved the treatment performance, while the influence of solution pH was not significant at pH 6-9 compared with that of ferrate(VI) dose. In addition, kinetic studies of ferrate(VI) with both compounds were carried out at pH 8 and pH 9 (20 °C). Ferrate(VI) had a much higher reactivity with CIP than IBU at pH 8 and pH 9, with CIP's apparent second-order rate constants of 113.7±6.3 M(-1) s(-1) and 64.1±1.0 M(-1) s(-1), respectively. The rate constants of ferrate(VI) with IBU were less than 0.2 M(-1) s(-1) at pH 8 and pH 9. Furthermore, seven oxidation products (OPs) were formed during CIP degradation by ferrate(VI). The attack on the piperazinyl ring of the CIP by ferrate(VI) appeared to lead to the cleavage or hydroxylation of the rings, and the attack on the quinolone moiety by ferrate(VI) might lead to the cleavage of the double bond at the six-member heterocyclic ring. No OPs of IBU were detected during ferrate(VI) oxidation due to very small part of IBU was degraded by ferrate(VI).

Authors+Show Affiliations

School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow G4 0BA, Scotland, United Kingdom.School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow G4 0BA, Scotland, United Kingdom. Electronic address: jiaqian.jiang@gcu.ac.uk.

Pub Type(s)

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

Language

eng

PubMed ID

24780761

Citation

Zhou, Zhengwei, and Jia-Qian Jiang. "Reaction Kinetics and Oxidation Products Formation in the Degradation of Ciprofloxacin and Ibuprofen By Ferrate(VI)." Chemosphere, vol. 119 Suppl, 2015, pp. S95-100.
Zhou Z, Jiang JQ. Reaction kinetics and oxidation products formation in the degradation of ciprofloxacin and ibuprofen by ferrate(VI). Chemosphere. 2015;119 Suppl:S95-100.
Zhou, Z., & Jiang, J. Q. (2015). Reaction kinetics and oxidation products formation in the degradation of ciprofloxacin and ibuprofen by ferrate(VI). Chemosphere, 119 Suppl, S95-100. https://doi.org/10.1016/j.chemosphere.2014.04.006
Zhou Z, Jiang JQ. Reaction Kinetics and Oxidation Products Formation in the Degradation of Ciprofloxacin and Ibuprofen By Ferrate(VI). Chemosphere. 2015;119 Suppl:S95-100. PubMed PMID: 24780761.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reaction kinetics and oxidation products formation in the degradation of ciprofloxacin and ibuprofen by ferrate(VI). AU - Zhou,Zhengwei, AU - Jiang,Jia-Qian, Y1 - 2014/04/26/ PY - 2014/01/16/received PY - 2014/04/05/revised PY - 2014/04/07/accepted PY - 2014/5/1/entrez PY - 2014/5/2/pubmed PY - 2015/5/30/medline KW - Ciprofloxacin KW - Ferrate(VI) KW - Ibuprofen KW - Kinetics KW - Oxidation products KW - Waste water treatment SP - S95 EP - 100 JF - Chemosphere JO - Chemosphere VL - 119 Suppl N2 - The treatment of ciprofloxacin (CIP) and ibuprofen (IBU) in test solutions by ferrate(VI) was investigated in this study. A series of jar test was performed in bench-scale at pH 6-9 and ferrate(VI) dose of 1-5 mg L(-1). Results demonstrated that ferrate(VI) removed CIP from test solutions efficiently, with above 70% of reduction under study conditions. In contrary, the removal rates of IBU were very low, less than 25% in all conditions. Raising ferrate(VI) dose improved the treatment performance, while the influence of solution pH was not significant at pH 6-9 compared with that of ferrate(VI) dose. In addition, kinetic studies of ferrate(VI) with both compounds were carried out at pH 8 and pH 9 (20 °C). Ferrate(VI) had a much higher reactivity with CIP than IBU at pH 8 and pH 9, with CIP's apparent second-order rate constants of 113.7±6.3 M(-1) s(-1) and 64.1±1.0 M(-1) s(-1), respectively. The rate constants of ferrate(VI) with IBU were less than 0.2 M(-1) s(-1) at pH 8 and pH 9. Furthermore, seven oxidation products (OPs) were formed during CIP degradation by ferrate(VI). The attack on the piperazinyl ring of the CIP by ferrate(VI) appeared to lead to the cleavage or hydroxylation of the rings, and the attack on the quinolone moiety by ferrate(VI) might lead to the cleavage of the double bond at the six-member heterocyclic ring. No OPs of IBU were detected during ferrate(VI) oxidation due to very small part of IBU was degraded by ferrate(VI). SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/24780761/Reaction_kinetics_and_oxidation_products_formation_in_the_degradation_of_ciprofloxacin_and_ibuprofen_by_ferrate_VI__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(14)00438-X DB - PRIME DP - Unbound Medicine ER -