Commenced in January 2007
Paper Count: 30184
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.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1078849Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1321
 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.
 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.
 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.
 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.
 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.
 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.
 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.
 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.
 G. Jegadeesan, K. Mondal, S.B. Lalvani, "Arsenate Remediation Using Nanosized Modified Zerovalent Iron Particles," Environ. Progress., vol 24 (3), 2005, pp. 289-296.
 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.
 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.