RESEARCH ARTICLE

Modeling the aqueous reaction kinetics of estriol with ferrate

  • Cong LI ,
  • Naiyun GAO
Expand
  • State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China

Received date: 06 Aug 2008

Accepted date: 20 Oct 2008

Published date: 05 Mar 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

In this study the aqueous oxidation kinetics of estriol (E3) by potassium ferrate (K2FeO4), a chemical for its strong oxidizing power and for producing a coagulant from its reduced state (i.e. Fe(III)), was evaluated in the range of pH 8-12 with different molar ratios of the reactants. As the degree of Fe(VI) protonation varies with the solution pH, it was found that a first order model was not suitable to describe the oxidation reaction. This paper describes a theoretical representation that closely models the reaction kinetics of E3 and ferrate. From this modeling, the reaction rates of HFeO4-and FeO42-with E3 have been determined. The results show that the reactivity of HFeO4- with dissociated and undissociated E3 is greater than that of FeO42-, and that E3 is more reactive in its dissociated state.

Cite this article

Cong LI , Naiyun GAO . Modeling the aqueous reaction kinetics of estriol with ferrate[J]. Frontiers of Chemical Science and Engineering, 2009 , 3(1) : 39 -45 . DOI: 10.1007/s11705-009-0098-4

Acknowledgements

The authors are grateful for the financial support of National Key Technology R&D Program in the 11th Five year Plan of China(2006BAJ08B06), National Important Project (2008ZX07421-002), State Key Laboratory of Pollution Control and Resource Reuse Project (PCRRF08005), Shanghai Science and Technology Foundation “Innovation Plan of 2007” (No. 072312001) and the Research Committee of the Hong Kong Polytechnic University in providing a Ph.D scholarship for Cong Li and the China Postdoc Foundation.
1
Fry D M. Reproductive effects in birds exposed to pesticides and industrial chemicals. Environ Sci Technol, 1995, 311: 65-171

2
Sumpter J P. Feminized responses in fish to environmental estrogens. Toxicol Lett, 1995, 82-83: 737–742

DOI

3
Jiang J Q, Lloyd B. Progress in the development and use of ferrate(VI) salt as an oxidant and coagulant for water and wastewater treatment. Wat Res, 2002, 36: 1397-1408

DOI

4
Sharma V K, Rivera W, Joshi V N, Millero F J, Oconnor D. Ferrate(VI) oxidation of thiourea. Environ Sci Technol, 1999, 33: 2645-2650

DOI

5
Jiang J Q, Wang S. Enhanced coagulation with potassium ferrate(VI) for removing humic substances. Environ Eng Sci, 2003, 20: 627-635

DOI

6
Huang H, Sommerfeld D, Dunn B C, Eyring E M, Lioyd C R. Ferrate(VI) oxidation of aqueous phenol: kinetics and mechanism. J Phys Chem A, 2001, 105: 3536-3541

DOI

7
Bielski B H J, Thomas M J. Studies of hypervalent iron in aqueous solutions. 1. readiation induced reduction of iron(VI) to iron(V) by CO2-. J Am Chem Soc, 1987, 109: 7761-7764

DOI

8
Li C, Li X Z, Graham N. A study of the preparation and reactivity of potassium ferrate. Chemosphere, 2005, 61: 537-543

DOI

9
Jiang J Q, Lloyd B, Grigore L. Preparation and evaluation of potassium ferrate as an oxidant and coagulant for potable water treatment. Environ Eng Sci, 2001, 18: 323-328

DOI

10
Licht S, Naschitz V, Halperin L, Halperin N, Lin L, Chen J J, Ghosh S, Liu B. Analysis of ferrate (VI) compounds and super-iron Fe(VI) battery cathodes: FTIR, ICP, titrimetric, XRD, UV/VIS, and electrochemical characterization. J Power Sources, 2001, 101: 167-176

DOI

11
Sharma V K. Potassium ferrate(VI): an environmentally friendly oxidant. Adv Environ Res, 2002, 6: 143-156

DOI

12
Graham N, Jiang C C, Li X Z, Jiang J Q, Ma J. The influence of pH on the degradation of phenol and chlorophenols by potassium ferrate. Chemosphere, 2004, 56: 949-956

DOI

13
Hoigné J, Bader H. Rate constants of reactions of ozone with organic and inorganic compounds in water. II: dissociating organic compounds. Water Res, 1983, 17: 185-194

DOI

14
Langlais B, Reckhow D A, Brink R B, eds. Ozone in water treatment: application and engineering. New York: Lewis Publishers, 1991, 43-45

15
Pinkston K E, Sedlak D L. Transformation of aromatic ether and amine containing pharmaceuticals during chlorine disinfection. Environ Sci Technol, 2004, 38: 4019-4025

DOI

16
Li C, Li X Z, Graham N, Gao N Y. The aqueous degradation of bisphenol a and steroid estrogens by ferrate. Water Research, 2008, 42(1-2): 109-120

DOI

Outlines

/