Arsenate Removal by Nano Zero-valent Iron in the Gas Bubbling System
This study focused on arsenate removal by nano
zero-valent iron (NZVI) in the gas-bubbled aqueous solution. It
appears that solution acidified by H2SO4 is far more favorable than by
CO2-bubbled acidification. In addition, as dissolved oxygen was
stripped out of solution by N2 gas bubbling, the arsenate removal
dropped significantly. To take advantages of common practice of
carbonation and oxic condition, pretreatment of CO2 and air bubbling
in sequence are recommended for a better removal of arsenate.
[1] D. Mohan, C.U. Pittman, Jr., "Arsenic removal from water/wastewater
using adsorbents - A critical review," J. Hazard. Mater., vol 142, 2007,
pp. 1-53.
[2] N. Melitas, J. Wang, M. Conklin, P. O'Day, J. Farrell, "Understanding
soluble arsenate removal kinetics by zerovalent iron media." Environ.
Sci. Technol., vol 36, 2002, pp. 2074-2081.
[3] H. Sun, L. Wang, R. Zhang, J. Sui, G. Xu, "Treatment of groundwater
polluted by arsenic compounds by zero valent iron," J. Hazard. Mater.,
vol B129, 2006, pp. 297-303.
[4] J.A. Lackovic, N.P. Nikolaidis, G.M. Dobbs, "Inorganic arsenic removal
by zero-valent iron," Environ. Eng. Sci., vol 17, 2000, pp. 29-40.
[5] G.N. Glavee, K.J. Klabunde, C.M. Sorensen, G.C. Hadjipanayis,
"Chemistry of borohydride reduction of iron (II) and iron (III) irons in
aqueous and nonaqueous media. Formation of nanoscale Fe, FeB, and
Fe2B powders," Inorg. Chem., vol 34, 1995, pp. 28-35.
[6] S.R. Kanel, J.M. Greneche, C. Choi, "Arsenic(V) Removal from
groundwater using nano scale zero-valent iron as a colloidal reactive
barrier material," Environ. Sci. Technol, vol. 40, 2006, pp. 2045-2050.
[7] A.M. Giasuddin, S.R. Kanel, H. Choi, Adsorption of humic acid onto
nanoscale zerovalent iron and its effect on arsenic removal. Environ. Sci.
Technol., vol 41, 2007, pp. 2022-2027.
[8] C. Ruangchainikom, C.H. Liao, J. Anotai, M.T. Lee, "Effects of water
characteristics on nitrate reduction by the Fe0/CO2 process,"
Chemosphere, vol 63, 2006, pp. 335-343.
[9] G. Jegadeesan, K. Mondal, S.B. Lalvani, "Arsenate Remediation Using
Nanosized Modified Zerovalent Iron Particles," Environ. Progress., vol
24 (3), 2005, pp. 289-296.
[10] S. Banga, M.D. Johnsonb, G.P. Korfiatisa, X. Meng, "Chemical reactions
between arsenic and zero-valent iron in water," Water Research, vol 39,
2005, pp. 763-770.
[11] C. Ruangchainikom, C.H. Liao, J. Anotai, M.T. Lee, "Characteristics of
nitrate reduction by zero-valent iron powder in the recirculated and of
CO2 - bubbled system,- Water Research, vol 40, 2006, pp. 195-204.
[1] D. Mohan, C.U. Pittman, Jr., "Arsenic removal from water/wastewater
using adsorbents - A critical review," J. Hazard. Mater., vol 142, 2007,
pp. 1-53.
[2] N. Melitas, J. Wang, M. Conklin, P. O'Day, J. Farrell, "Understanding
soluble arsenate removal kinetics by zerovalent iron media." Environ.
Sci. Technol., vol 36, 2002, pp. 2074-2081.
[3] H. Sun, L. Wang, R. Zhang, J. Sui, G. Xu, "Treatment of groundwater
polluted by arsenic compounds by zero valent iron," J. Hazard. Mater.,
vol B129, 2006, pp. 297-303.
[4] J.A. Lackovic, N.P. Nikolaidis, G.M. Dobbs, "Inorganic arsenic removal
by zero-valent iron," Environ. Eng. Sci., vol 17, 2000, pp. 29-40.
[5] G.N. Glavee, K.J. Klabunde, C.M. Sorensen, G.C. Hadjipanayis,
"Chemistry of borohydride reduction of iron (II) and iron (III) irons in
aqueous and nonaqueous media. Formation of nanoscale Fe, FeB, and
Fe2B powders," Inorg. Chem., vol 34, 1995, pp. 28-35.
[6] S.R. Kanel, J.M. Greneche, C. Choi, "Arsenic(V) Removal from
groundwater using nano scale zero-valent iron as a colloidal reactive
barrier material," Environ. Sci. Technol, vol. 40, 2006, pp. 2045-2050.
[7] A.M. Giasuddin, S.R. Kanel, H. Choi, Adsorption of humic acid onto
nanoscale zerovalent iron and its effect on arsenic removal. Environ. Sci.
Technol., vol 41, 2007, pp. 2022-2027.
[8] C. Ruangchainikom, C.H. Liao, J. Anotai, M.T. Lee, "Effects of water
characteristics on nitrate reduction by the Fe0/CO2 process,"
Chemosphere, vol 63, 2006, pp. 335-343.
[9] G. Jegadeesan, K. Mondal, S.B. Lalvani, "Arsenate Remediation Using
Nanosized Modified Zerovalent Iron Particles," Environ. Progress., vol
24 (3), 2005, pp. 289-296.
[10] S. Banga, M.D. Johnsonb, G.P. Korfiatisa, X. Meng, "Chemical reactions
between arsenic and zero-valent iron in water," Water Research, vol 39,
2005, pp. 763-770.
[11] C. Ruangchainikom, C.H. Liao, J. Anotai, M.T. Lee, "Characteristics of
nitrate reduction by zero-valent iron powder in the recirculated and of
CO2 - bubbled system,- Water Research, vol 40, 2006, pp. 195-204.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:61285", author = "V. Tanboonchuy and J.C. Hsu and N. Grisdanurak and C.H. Liao", title = "Arsenate Removal by Nano Zero-valent Iron in the Gas Bubbling System", abstract = "This study focused on arsenate removal by nano
zero-valent iron (NZVI) in the gas-bubbled aqueous solution. It
appears that solution acidified by H2SO4 is far more favorable than by
CO2-bubbled acidification. In addition, as dissolved oxygen was
stripped out of solution by N2 gas bubbling, the arsenate removal
dropped significantly. To take advantages of common practice of
carbonation and oxic condition, pretreatment of CO2 and air bubbling
in sequence are recommended for a better removal of arsenate.", keywords = "Arsenic, arsenate, zero-valent iron.", volume = "4", number = "5", pages = "346-3", }
