Type of Document	Master's Thesis
Author	Hurst, Gregory H.
URN	etd-04182009-041317
Title	Evaluation of the use of ferrous iron for chlorite removal under alkaline pH conditions
Degree	Master of Science
Department	Environmental Engineering
Advisory Committee	Advisor Name Title Knocke, William R. Committee Chair Dietrich, Andrea M. Committee Member Little, John C. Committee Member
Keywords	Iron
Date of Defense	1994-09-14
Availability	restricted
Abstract Chlorine dioxide has gained much attention for use as a possible alternative disinfectant in water treatment plants due to concerns regarding trihalomethane formation in drinking waters which utilize chlorine as the primary disinfectant and the strict regulations regarding THM's and THMFP (MCL of 0.080 mg/L for TTHMs) (Pontius, 1993). Although the use of Cl02 as a disinfectant prevents the formation of THM's, concern exists regarding the potential health risks due to the disinfection-by-products of chlorite and chlorate. T he main objective of this project was to study the removal of chlorite by reaction with ferrous iron under elevated pH conditions. The stoichiometry of the reaction was evaluated under the following conditions: solution pH of 6.0 to 10.0, 02(aq) concentration of 0.5 to 10 mg/L, and solution DOC concentrations of 0 to 15 mg/L. Mass balances were conducted to define the speciation of the oxychlorine residuals associated with the reduction of Cl02 by Fe(II).
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V855_1994.H877.pdf 2.78 Mb 00:12:52 00:06:37 00:05:47 00:02:53 00:00:14 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.