Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite
The persistent nature of perfluorochemicals (PFCs) has attracted global concern in recent years. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are the most commonly found PFC compounds, and thus their fate and transport play key roles in PFC distribution in the natural environment. The kinetic behavior of PFOS or PFOA on boehmite consists of a fast adsorption process followed by a slow adsorption process which may be attributed to the slow transport of PFOS or PFOA into the boehmite pore surface. The adsorption isotherms estimated the maximum adsorption capacities of PFOS and PFOA on boehmite as 0.877 μg/m2 and 0.633 μg/m2, with the difference primarily due to their different functional groups. The increase of solution pH led to a moderate decrease of PFOS and PFOA adsorption, owing to the increase of ligand exchange reactions and the decrease of electrostatic interactions. The presence of NaCl in solution demonstrated negative effects for PFOS and PFOA adsorption on boehmite surfaces, with potential mechanisms being electrical double layer compression, competitive adsorption of chloride.
[1] J. P. Giesy, K. Kannan, "Perfluorochemical surfactants in the
environment," Environ. Sci. Technol., vol. 36, pp. 146A-152A, 2002.
[2] M.K. So, S. Taniyasu, N. Yamashita, J.P. Giesy, J. Zheng, Z. Fang, S.H.
Im, P.K.S. Lam, "Perfluorinated compounds in coastal waters of Hong
Kong, South China, and Korea," Environ. Sci. Technol., vol. 38, pp.
4056-4063, 2004.
[3] C. P. Higgins, R. G. Luthy, "Sorption of perfluorinated surfactants on
sediments," Environ. Sci. Technol., vol. 40, pp. 7251-7256, 2006.
[4] L.M. Yim, S. Taniyasu, L.W.Y. Yeung, G. Lu, L. Jin, Y. Yang, P.K.S.
Lam, K. Kannan, N. Yamashita, "Perfluorinated compounds in tap water
from china and several other countries," Environ. Sci. Technol., vol. 43,
pp. 4824-4829, 2009.
[5] R. Ma, K. Shih, "Perfluorochemicals in wastewater treatment plants and
sediments in Hong Kong," Environ. Pollut., vol. 158, pp. 1354-1362,
2010.
[6] R. Loos, G. Locoro, T. Huber, J. Wollgast, E.H. Christoph, A. de Jager, B.
Manfred Gawlik, G. Hanke, G. Umlauf, J.M. Zaldívar, "Analysis of
perfluorooctanoate (PFOA) and other perfluorinated compounds (PFCs)
in the River Po watershed in N-Italy," Chemosphere, vol. 71, pp. 306-313,
2008.
[7] R.L. Johnson, A.J. Anschutz, J.M. Smolen, M.F. Simcik, R. Lee Penn,
"The adsorption of perfluorooctane sulfonate onto sand, clay, and iron
oxide surfaces," J. Chem. Eng. Data, vol. 52, pp. 1165-1170, 2007.
[8] C.Y. Tang, Q. Shiang Fu, D. Gao, C.S. Criddle, J.O. Leckie, "Effect of
solution chemistry on the adsorption of perfluorooctane sulfonate onto
mineral surfaces," Water Res., vol. 44, pp. 2654-2662, 2010.
[9] F. Wang, K. Shih, "Adsorption of perfluorooctanesulfonate (PFOS) and
perfluorooctanoate (PFOA) on alumina: Influence of solution pH and
cations," Water Res., vol. 45, pp. 2925-2930, 2011.
[10] A. Navrotsky, "Thermochemistry of nanomaterials," Rev. Mineral.
Geochem., vol. 44, pp. 73-103, 2001,
[11] T.H. Yoon, S.B. Johnson, C.B. Musgrave, G.E. Brown Jr, "Adsorption of
organic matter at mineral/water interfaces: I. ATR-FTIR spectroscopic
and quantum chemical study of oxalate adsorbed at boehmite/water and
corundum/water interfaces," Geochim. Cosmochim. Acta, vol. 68, pp.
4505-4518, 2004.
[12] B. Kasprzyk-Hordern, "Chemistry of alumina, reactions in aqueous
solution and its application in water treatment," Adv. Colloid Interface
Sci., vol. 110, pp. 19-48, 2004.
[13] Q. Zhou, S. Deng, Q. Yu, Q. Zhang, G. Yu, J. Huang, H. He, "Sorption of
perfluorooctane sulfonate on organo-montmorillonites," Chemosphere,
vol. 78, pp. 688-694, 2010.
[14] [14] R.F. Tabor, J. Eastoe, P.J. Dowding, "A two-step model for
surfactant adsorption at solid surfaces," J. Colloid Interface Sci., vol. 346,
pp. 424-428, 2010.
[15] W.J. Weber Jr, P.M. McGinley, L.E. Katz, "Sorption phenomena in
subsurface systems: Concepts, models and effects on contaminant fate
and transport," Water Res., vol. 25, pp. 499-528, 1991.
[16] R. P. Schwarzenbach, P. M. Gschwend, D. M. Imboden, "Environmental
Organic Chemistry", first ed. John Wiley & Sons, New York,1993.
[17] K. Harada, F. Xu, K. Ono, T. Iijima, A. Koizumi, "Effects of PFOS and
PFOA on L-type Ca2+ currents in guinea-pig ventricular myocytes,"
Biochem. Biophys. Res. Commun., vol. 329, pp. 487-494, 2005.
[18] V. Snoeyink, D. Jenkins, "Water Chemistry", John Wiley & Sons, New
York, 1980.
[19] F. H. Walters, "Design of corrosion inhibitors: Use of the hard and soft
acid-base (HSAB) theory," J. Chem. Educ., vol. 68, pp. 29, 1991.
[20] D. Brooke, A. Footitt, T.A. Nwaogu, "Environmental Risk Evaluation
Report: Perfluorooctanesulphonate (PFOS)." Environment Agency,
Chemicals Assessment section, Wallingford, UK, 2004.
[21] K. U. Goss, "The pKa values of PFOA and other highly fluorinated
carboxylic acids," Environ. Sci. Technol., vol. 42, pp. 456-458, 2008.
[22] W. Stumm, "Aquatic colloids as chemical reactants: surface structure and
reactivity," Colloids Surf. A: Physicochem. Eng. Asp., vol. 73, pp. 1-18,
1993.
[23] F. Xiao, X. Zhang, L. Penn, J.S. Gulliver, M.F. Simcik, "Effects of
monovalent cations on the competitive adsorption of perfluoroalkyl acids
by kaolinite: experimental studies and modeling," Environ. Sci. Technol.,
vol. 45, pp. 10028-10035, 2011.
[1] J. P. Giesy, K. Kannan, "Perfluorochemical surfactants in the
environment," Environ. Sci. Technol., vol. 36, pp. 146A-152A, 2002.
[2] M.K. So, S. Taniyasu, N. Yamashita, J.P. Giesy, J. Zheng, Z. Fang, S.H.
Im, P.K.S. Lam, "Perfluorinated compounds in coastal waters of Hong
Kong, South China, and Korea," Environ. Sci. Technol., vol. 38, pp.
4056-4063, 2004.
[3] C. P. Higgins, R. G. Luthy, "Sorption of perfluorinated surfactants on
sediments," Environ. Sci. Technol., vol. 40, pp. 7251-7256, 2006.
[4] L.M. Yim, S. Taniyasu, L.W.Y. Yeung, G. Lu, L. Jin, Y. Yang, P.K.S.
Lam, K. Kannan, N. Yamashita, "Perfluorinated compounds in tap water
from china and several other countries," Environ. Sci. Technol., vol. 43,
pp. 4824-4829, 2009.
[5] R. Ma, K. Shih, "Perfluorochemicals in wastewater treatment plants and
sediments in Hong Kong," Environ. Pollut., vol. 158, pp. 1354-1362,
2010.
[6] R. Loos, G. Locoro, T. Huber, J. Wollgast, E.H. Christoph, A. de Jager, B.
Manfred Gawlik, G. Hanke, G. Umlauf, J.M. Zaldívar, "Analysis of
perfluorooctanoate (PFOA) and other perfluorinated compounds (PFCs)
in the River Po watershed in N-Italy," Chemosphere, vol. 71, pp. 306-313,
2008.
[7] R.L. Johnson, A.J. Anschutz, J.M. Smolen, M.F. Simcik, R. Lee Penn,
"The adsorption of perfluorooctane sulfonate onto sand, clay, and iron
oxide surfaces," J. Chem. Eng. Data, vol. 52, pp. 1165-1170, 2007.
[8] C.Y. Tang, Q. Shiang Fu, D. Gao, C.S. Criddle, J.O. Leckie, "Effect of
solution chemistry on the adsorption of perfluorooctane sulfonate onto
mineral surfaces," Water Res., vol. 44, pp. 2654-2662, 2010.
[9] F. Wang, K. Shih, "Adsorption of perfluorooctanesulfonate (PFOS) and
perfluorooctanoate (PFOA) on alumina: Influence of solution pH and
cations," Water Res., vol. 45, pp. 2925-2930, 2011.
[10] A. Navrotsky, "Thermochemistry of nanomaterials," Rev. Mineral.
Geochem., vol. 44, pp. 73-103, 2001,
[11] T.H. Yoon, S.B. Johnson, C.B. Musgrave, G.E. Brown Jr, "Adsorption of
organic matter at mineral/water interfaces: I. ATR-FTIR spectroscopic
and quantum chemical study of oxalate adsorbed at boehmite/water and
corundum/water interfaces," Geochim. Cosmochim. Acta, vol. 68, pp.
4505-4518, 2004.
[12] B. Kasprzyk-Hordern, "Chemistry of alumina, reactions in aqueous
solution and its application in water treatment," Adv. Colloid Interface
Sci., vol. 110, pp. 19-48, 2004.
[13] Q. Zhou, S. Deng, Q. Yu, Q. Zhang, G. Yu, J. Huang, H. He, "Sorption of
perfluorooctane sulfonate on organo-montmorillonites," Chemosphere,
vol. 78, pp. 688-694, 2010.
[14] [14] R.F. Tabor, J. Eastoe, P.J. Dowding, "A two-step model for
surfactant adsorption at solid surfaces," J. Colloid Interface Sci., vol. 346,
pp. 424-428, 2010.
[15] W.J. Weber Jr, P.M. McGinley, L.E. Katz, "Sorption phenomena in
subsurface systems: Concepts, models and effects on contaminant fate
and transport," Water Res., vol. 25, pp. 499-528, 1991.
[16] R. P. Schwarzenbach, P. M. Gschwend, D. M. Imboden, "Environmental
Organic Chemistry", first ed. John Wiley & Sons, New York,1993.
[17] K. Harada, F. Xu, K. Ono, T. Iijima, A. Koizumi, "Effects of PFOS and
PFOA on L-type Ca2+ currents in guinea-pig ventricular myocytes,"
Biochem. Biophys. Res. Commun., vol. 329, pp. 487-494, 2005.
[18] V. Snoeyink, D. Jenkins, "Water Chemistry", John Wiley & Sons, New
York, 1980.
[19] F. H. Walters, "Design of corrosion inhibitors: Use of the hard and soft
acid-base (HSAB) theory," J. Chem. Educ., vol. 68, pp. 29, 1991.
[20] D. Brooke, A. Footitt, T.A. Nwaogu, "Environmental Risk Evaluation
Report: Perfluorooctanesulphonate (PFOS)." Environment Agency,
Chemicals Assessment section, Wallingford, UK, 2004.
[21] K. U. Goss, "The pKa values of PFOA and other highly fluorinated
carboxylic acids," Environ. Sci. Technol., vol. 42, pp. 456-458, 2008.
[22] W. Stumm, "Aquatic colloids as chemical reactants: surface structure and
reactivity," Colloids Surf. A: Physicochem. Eng. Asp., vol. 73, pp. 1-18,
1993.
[23] F. Xiao, X. Zhang, L. Penn, J.S. Gulliver, M.F. Simcik, "Effects of
monovalent cations on the competitive adsorption of perfluoroalkyl acids
by kaolinite: experimental studies and modeling," Environ. Sci. Technol.,
vol. 45, pp. 10028-10035, 2011.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:64427", author = "Fei Wang and Kaimin Shih", title = "Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite", abstract = "The persistent nature of perfluorochemicals (PFCs) has attracted global concern in recent years. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are the most commonly found PFC compounds, and thus their fate and transport play key roles in PFC distribution in the natural environment. The kinetic behavior of PFOS or PFOA on boehmite consists of a fast adsorption process followed by a slow adsorption process which may be attributed to the slow transport of PFOS or PFOA into the boehmite pore surface. The adsorption isotherms estimated the maximum adsorption capacities of PFOS and PFOA on boehmite as 0.877 μg/m2 and 0.633 μg/m2, with the difference primarily due to their different functional groups. The increase of solution pH led to a moderate decrease of PFOS and PFOA adsorption, owing to the increase of ligand exchange reactions and the decrease of electrostatic interactions. The presence of NaCl in solution demonstrated negative effects for PFOS and PFOA adsorption on boehmite surfaces, with potential mechanisms being electrical double layer compression, competitive adsorption of chloride.
", keywords = "PFOS, PFOA, adsorption, electrostatic interaction,
ligand exchange", volume = "6", number = "9", pages = "879-5", }
