Reduction of Fulvic Acid in Drinking Water by Ferrate
Publication: Journal of Environmental Engineering
Volume 129, Issue 1
Abstract
Acting as a powerful oxidant, efficient coagulant, and effective disinfectant, ferrate is a good multifunctional agent for water and wastewater purification. In this study, some of these key aspects were studied for treating water containing fulvic acid, including the reduction efficiency of fulvic acid (FA) in drinking water and the optimum conditions for reducing FA using ferrate prepared in the laboratory. Jar tests and pilot tests were employed in the studies and the results of FA reduction were analyzed spectrophotometrically. Ferrate in these tests exhibited good oxidation capacity on FA. The ultraviolet absorption (UVA) of 2 mg/L FA in water can be reduced about 90% when the weight ratio of ferrate to FA was 12:1. Adsorption to and coprecipitation with precipitate produced by ferrate decomposition can also result in additional FA reduction. In the presence of turbidity, ferrate can oxidize and adsorb simultaneously and over 95% of UVA was reduced with the same weight ratio of 12:1. Combining the application of ferrate and polyaluminum chloride (PAC) or iron chloride was more effective for FA reduction. The UVA of 2 mg/L FA was reduced 100% in synthetic drinking water by a joint treatment with 8 mg/L ferrate by weight) and 0.8 mg/L PAC (Al by weight) or 6 mg/L ferrate by weight) and 0.8 mg/L (Fe by weight). The pilot test performed more effectively for FA reduction than did the jar test.
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References
Audette, R. J., Quail, J. W., and Smith, P. J.(1971). “Ferrate (VI) ion, a novel oxidizing agent.” Tetrahedron Lett., 3, 279–282.
DeLuca, S. J., Cantelli, M., and DeLuca, M. A.(1992). “Ferrate versus traditional coagulants in the treatment of combined industrial wastes.” Water Sci. Technol., 26, 2077–2080.
DeLuca, S. J., Chao, A. C., and Smallwood, J. C., Jr. (1983a). “Ames test of ferrate treated water.” J. Environ. Eng., 109(5), 1159–1167.
DeLuca, S. J., Chao, A. C., and Smallwood, J. C., Jr. (1983b). “Removal of organic priority pollutants by oxidation-coagulation.” J. Environ. Eng., 109(1), 36–46.
DeLuca, S. J., Idle, C. N., and Chao, A.C.(1996). “Quality improvement of biosolids by ferrate(VI) oxidation of offensive odour compounds.” Water Sci. Technol., 33(3), 119–130.
Gilbert, M. B., Waite, T. D., and Harris, C.(1976). “An investigation of the applicability of ferrate ion for disinfection.” J. Am. Water Works Assoc., 68, 495–497.
Gu, B. H., Schmitt, J., Chen, Z. H., Liang, L. Y., and McCarthy, J. F.(1994). “Adsorption and desorption of natural organic matter on iron oxide: mechanisms and models.” Environ. Sci. Technol., 28, 38–46.
Murmann, F. K., and Robinson, P. R.(1974). “Experiments utilizing for purifying water.” Water Res., 8, 543–547.
National Environmental Protection Bureau (NEPB). (1989). Analysis method for water and wastewater, China Environmental Science, Beijing, 99–101.
Owen, D. M., Amy, G. L., Chowdhury, Z. K., Paode, R., McCoy, G., and Viscocil, K.(1995). “NOM characterization and treatability.” J. Am. Water Works Assoc., 87, 46–63.
Peng, A., and Wang, W. H.(1981). Acta Scientiae Circumstantiae, 1, 126.
Potts, M. E., and Churchwell, D. R.(1994). “Reduction of radionuclides in wastewaters utilizing potassium ferrate(VI).” Water Environ. Res., 66(2), 107–109.
Qu, J. H.(1997). “The multi-functional effect on water treatment of ferrate and its application.” China Water Wastewater, 13(3), 21–23 (in Chinese).
Reckhow, D. A.(1990). “Chlorination of humic materials: byproduct formation and chemical interpretations.” Environ. Sci. Technol., 24(11), 1655–1664.
Rush, J. D., and Bielski, B. H. J.(1989). “Kinetics of ferrate decay in aqueous solution. A pulse-radiolysis study.” Inorg. Chem., 28(21), 3947–3951.
Schreyer, J. M., and Ockerman, L. T.(1951). “Stability of the ferrate(VI) ion in aqueous solutions.” Anal. Chem., 23, 1313–1318.
Schreyer, J. M., Thompson, G. W., and Ockerman, L. T.(1953). Inorg. Synth., 4, 164–168.
Tian, B. Z., and Qu, J. H.(1999). “A study on the producing of potassiumferrate by chemical oxidation from a recycled solution.” Environ. Chem., 18(2), 173–177 (in Chinese).
Waite, T. D.(1979). “Feasibility of wastewater treatment with ferrate.” J. Environ. Eng. Div., Am. Soc. Civ. Eng., 105(6), 1023–1034.
Waite, T. D. (1981). Chemistry in water reuse, Ann Arbor Science, Ann Arbor, Mich., 543–547.
Waite, T. D., and Gilbert, M.(1978). “Oxidative destruction of phenol and other organic water residuals by iron(VI) ferrate.” J. Water Pollut. Control Fed., 50(3), 543–551.
Waite, T. D., and Gray, K. A.(1984). “Oxidation and coagulation of wastewater effluent utilizing ferrate(VI) ion.” Stud. Environ. Sci., 23, 407–411.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 129 • Issue 1 • January 2003
Pages: 17 - 24
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 17, 2000
Accepted: Apr 15, 2002
Published online: Dec 13, 2002
Published in print: Jan 2003
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