The Environmental Matrix Effects of Inorganic Ions to Photo-Reductive Defluorination of Perfluorooctanoic Acid

Abstract:

Perfluorooctanoic acid (PFOA), one of persistent organic pollutants (POPs), has prompted much concern in the last fifty years. Its accumulation in the natural environment is increased, and its threats to ecosystems have been discovered. Because of the highly stable, PFOA was hardly decomposed and defluorination. In previous study, a photo-reduction method is developed for the decomposition of PFOA in Milli-Q water with potassium iodide (KI) as a mediator. But this system wasn’t discussed in natural environment. In this study, several common inorganic ions in the surface water were been choice as the object. By analyzing the matrix effects of different kinds of anions and cations to the photo-reductive defluorination of PFOA, it shows that the presence of anions in the system will heavily inhibit the degradation process, while the impact of cations to the degradation is related to the concentration. And, both anions and cations can inhibit the defluorination process, but anions have much greater impact than the cations to the defluorination rate.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 327-330
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.327
• Online since: April 2013
• Authors: Chao Jie Zhang, Pei Chen, Yan Qu, Qi Zhou
• Keywords: Inorganic Ions, Matrix Effects, Perfluorooctanoic Acid, Reductive Defluorination

References

[1] Schultz, M.M., Barofsky, D.F., Field, J.A., Fluorinated alkyl surfactants, Environ. Eng. Sci. 20(2003) 487–501.

[2] Kudo, N., Suzuki, E., Katakura, M., Ohmori, K., Noshio, R., Kawashima, Y., Comparison of the elimination between perfluorinated fatty acids with different carbon chain length in rats, Chem. Biol. Interact. 134(2001) 203–216.

DOI: 10.1016/s0009-2797(01)00155-7

[3] Olsen, G.W., Church, T.R., Larson, E.B., Belle, G., Lundberg, J.K., Hansen, K.J., Burris, J.M., Mandel, J.H., Zobel, L.R., Serum concentrations of perfluorooctanesulfonate and other fluorochemicals in an elderly population from Seattle, Washington, Chemosphere 54(2004) 1599–1611.

DOI: 10.1016/j.chemosphere.2003.09.025

[4] Sanderson, H., Boudreau, T.M., Mabury, S.A., Solomon, K.R., Impact of perfluorootanoic acid on the structure of the zooplankton community in indoor microcosms, Aquat. Toxicol. 62(2003) 227–234.

DOI: 10.1016/s0166-445x(02)00100-5

[5] Key, B.D., Howell, R.D., Criddle, C.S., Defluorination of organofluorine sulfur compounds by Pseudomonas Sp. Strain D2, Environ. Sci. Technol. 32(1998) 2283–2287.

DOI: 10.1021/es9800129

[6] Hori, H., Hayakawa, E., Einaga, H., Kutsuna, S., Koike, K., Ibusuki, T., Kiatagawa, H., Arakawa, R., Decomposition of environmentally persistent perfluorooctanoic acid in water by photochemical approaches, Environ. Sci. Technol. , 38(2004) 6118–6124.

DOI: 10.1021/es049719n

[7] Giesy, J.P., Kannan, K., Perfluorochemical surfactants in the environment, Environ. Sci. Technol., 36(2002) 146A–152A.

DOI: 10.1021/es022253t

[8] Yan Qu, Chaojie Zhang*, Fei Li, Jing Chen, Qi Zhou, Photo-reductive defluorination of perfluorooctanoic acid in water, Water Research, 44(2010) 2939-2947.

DOI: 10.1016/j.watres.2010.02.019

[9] Jie Cheng, Chad D,Vecitis, Hyunwoong Park, Brian T, Mader, Michael R. Hoffmann, Sonochemical Degradation of Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA) in Landfill Groundwater: Environmental Matrix Effects, Environ. Sci. Technol. , 42(2008) 8057–8063.

DOI: 10.1021/es8013858

[10] Upadhyay S. K. , Chemical kinetics and reaction dynamics[m]., Springer, New York, 2006, p.190.

[11] John C. C., Yin Z., Solar detoxification of fuel contaminated groundwater using fixed-bed photocatlysts, Water Environment Research, 68(1996) 270-278.

DOI: 10.2175/106143096x127703

[12] Kutsuna S., Hori H. Rate constants for aqueous-phase reactions of SO4-• with C2F5C(O)O– and C3F7C(O)O– at 298 K, International Journal of Chemical Kinetics, 39(2007) 276-288.

DOI: 10.1002/kin.20239