Advanced SearchSearch Tips
Reduction Efficiency of Cr(VI) in Aqueous Solution by Different Sources of Zero-Valent Irons
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Reduction Efficiency of Cr(VI) in Aqueous Solution by Different Sources of Zero-Valent Irons
Yang, Jae-E.; Kim, Jong-Sung; Ok, Yong-Sik; Yoo, Kyung-Yoal;
  PDF(new window)
Objective of this research was to assess the effectiveness of the different sources of the zero-valent irons (ZVIs) on the reduction of the toxic Cr(VI) to the nonhazardous Cr(III) in an aqueous solution. The physical and chemical properties of the six ZVIs were determined. Particle size and specific surface area of the ZVIs were in the ranges of , respectively. Most of the ZVIs contained Fe greater than 98% except for J (93%) and PU (88%). Reduction efficiencies of the ZVI for Cr(VI) reduction were varied with kinds of ZVIs. The J and PU ZVIs reduced 100% and 98% of Cr(VI) in the aqueous solution, respectively, within 3 hrs of reaction. However, PA, F, Sand J1 reduced 74, 65, 29 and 11% of Cr(VI), respectively, after 48 hrs. The pH of the reacting solution was rapidly increased from 3 to within 3 hrs. The oxidation-reduction potential (Eh) of the reacting solution was dropped from 600 to 319 mV within 3 hrs following addition of ZVIs to the Cr(VI) contaminated water. The capability of ZVIs for Cr(VI) reduction was the orders of PU > J > PA > F > S > J1, which coincided with the capacities to increase the pH and decrease the redox potentials. Results suggested that the reduction of Cr(VI) to Cr(III) was derived from the oxidation of the ZVI in the aqueous solution.
zero-valent iron;Cr(VI);reduction;pH;Eh;oxidation-reduction potential;
 Cited by
우리나라 농경지 중금속 동태 및 작물흡수 연구동향,이지호;김지영;고우리;정은정;;정구복;김두호;김원일;

한국환경농학회지, 2012. vol.31. 1, pp.75-95 crossref(new window)
영가철에 의한 토양 Cr(VI) 환원에 미치는 유기물 및 수분함량 영향,양재의;이수재;김동국;오상은;윤성환;옥용식;

한국환경농학회지, 2008. vol.27. 1, pp.60-65 crossref(new window)
Current research trends for heavy metals of agricultural soils and crop uptake in Korea, Korean Journal of Environmental Agriculture, 2012, 31, 1, 75  crossref(new windwow)
Impacts of zerovalent iron application on the adsorption behavior of alachlor and metalaxyl in water and soil systems, Environmental Earth Sciences, 2011, 64, 8, 2295  crossref(new windwow)
Capacity of Cr(VI) reduction in an aqueous solution using different sources of zerovalent irons, Korean Journal of Chemical Engineering, 2006, 23, 6, 935  crossref(new windwow)
Blowes, D. W., Ptacek C. J. and Jambor, J. L. (1997) In-situ remediation of Cr(VI) contaminated ground water using permeable reactive walls, Environ. Sci. Technol. 31(12), 3348-3357 crossref(new window)

Losi, M. E., Amrhein C. and Frankenberger, W. T. (1994) Bioremediation of chromate-contaminated groundwater by reduction and precipitation in surface soils, J. Environ. Qual. 10, 1141-1150

Ok, Y. S., Lim, S. and Kim, J. G. (2003) The application of dual function organoclay on remediation of toxic metals and organic compounds in soilwater system, Korean J. Environ. Agric. 22(3), 177-184 crossref(new window)

Lee, T., Lim, H., Lee, Y. and Park, J. W. (2003) Use of waste iron metal for removal of Cr(VI) from water, Chemosphere 53, 479-485 crossref(new window)

Comfort, S. D., Shea, P. J. Machacek, T. A, Gaber, H. and Oh, B. T. (2001) Field-scale remediation of a metolachlor spill site using zerovalent iron, J. Environ. Qual. 30, 1636-1643 crossref(new window)

EPA (1998) Permeable reactive barrier technologies for contaminant remediation, EPA OSWER, USA, EPA/600/R-98/125

Light, T. S. (1972) Standard solution for redox potential measurements, Anal. Chem. 44(6), 1038-40 crossref(new window)

Johnson, T. L., Scherer, M. and Tratnyek, P. (1996) Kinetics if halogenated organic compound degradation by iron metal, Environ. Sci. Technol. 30(8), 2634-2640 crossref(new window)

Choi, S. H., Chang, Y. Y, Hwang, K. Y. and Khim, J. Y. (1999) Treatment of hazardous chemicals by nanoscale iron powder, J. KoSES 4(3), 85-93

Powell, R. M., PuIs, R. W., Hightower, S. K. and Sabatini, D. A. (1995) Coupled iron corrosion and chromate reduction: mechanisms for subsurface remediation, Environ. Sci. Technol. 29, 1913-1922 crossref(new window)